Panasonic Urban Multi MX1R Series Service Manual
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Panasonic Urban Multi MX1R Series Service Manual

Panasonic Urban Multi MX1R Series Service Manual

Using r-407c / r-22
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Table of Contents

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Service Manual
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
repair the product or products dealt with in this service information by anyone else could result in serious injury or death.
There are special components used in this equipment which are important for safety. These parts are marked by
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced
with manufacture's specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of
manufacture.
Specifications are subject to change without notice for further improvement.
Urban Multi
UM Series Using R-407C
Inverter
Heat Recovery ME1R Series
Combination
UM Series Using R-22
Inverter
Heat Recovery ME1 Series
WARNIING
IMPORTANT SAFETY NOTICE
ORDER No. PACD011001C2
MX1R Series
MA1R Series
MX1 Series
© 2001 Matsushita Electric Industrial Co., Ltd.
All rights reserved. Unauthorized copying and
distribution is a violation of law.
in the Schematic

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Summary of Contents for Panasonic Urban Multi MX1R Series

  • Page 1 ORDER No. PACD011001C2 Service Manual Urban Multi UM Series Using R-407C Inverter MX1R Series Heat Recovery ME1R Series Combination MA1R Series UM Series Using R-22 Inverter MX1 Series Heat Recovery ME1 Series WARNIING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.

  • Page 2: Table Of Contents

    PACD011001C2 8UEDQ#0XOWL 8UEDQ#0XOWL 8UEDQ#0XOWL 8UEDQ#0XOWL 6HUYLFH#0DQXDO 6HUYLFH#0DQXDO 6HUYLFH#0DQXDO 6HUYLFH#0DQXDO 1. Introduction ...................xiii 1.1 Safety Cautions ..................xiii 1.2 Survey of Possible UM Outdoor Units...........xvii 1.3 Survey of Possible UM Indoor Units............. xviii 1.4 Nomenclature ..................xix 80#6HULHV#8VLQJ#5055# ,QYHUWHU#0;4#6HULHV#2# +HDW#5HFRYHU\#0(4#6HULHV# 11111111111111111111111111 4 3DUW4 *HQHUDO#,QIRUPDWLRQ 11111111111111111111111111111111111111111111111111111111111 6 1.
  • Page 3 PACD011001C2 1.21 Oil Temperature Sensor (8 and 10 Hp only) ..........54 1.22 Louver Control for Preventing Ceiling Dirt..........55 1.23 Thermostat Sensor in Remote Controller..........56 1.24 Freeze Prevention ..................58 3DUW6 7HVW#2SHUDWLRQ 11111111111111111111111111111111111111111111111111111111111111111 8< 1. Test Operation ..................60 1.1 Procedure and Outline ................60 1.2 When Power is Turned On ..............62 1.3 Outdoor Unit PC Board Ass’y..............63 1.4 Setting Modes (MX1 Series) ..............67...
  • Page 4 PACD011001C2 3.4 Indoor Unit: Fan Motor (M1F) Lock, Overload........159 3.5 Indoor Unit: Malfunction of Swing Flap Motor (M1S)......160 3.6 Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E)............161 3.7 Indoor Unit: Drain Level above Limit ............162 3.8 Indoor Unit: Malfunction of Capacity Determination Device ....163 3.9 Indoor Unit: Malfunction of Thermistor (R2T) for Liquid Pipe ....164 3.10 Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes ....165 3.11 Indoor Unit: Malfunction of Thermistor (R1T) for Air Inlet.....166...
  • Page 5 PACD011001C2 5.7 Outdoor Unit: Inverter Over-Ripple Protection ........200 5.8 Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor ..............201 6. Troubleshooting (OP: Central Remote Controller) ......202 6.1 Malfunction of Transmission between Central Remote Controller and Indoor Unit ......202 6.2 PC Board Defect ..................203 6.3 Malfunction of Transmission between Optional Controllers for Centralised Control .................204 6.4 Improper Combination of Optional Controllers...
  • Page 6 PACD011001C2 1.6 Equalized Oil Level Operation (Equalized Oil Level between Twin Compressors).......245 1.7 Oil Return Operation ................246 1.8 Defrost....................248 1.9 Pressure Equalization Control (ME1R Series) ........251 1.10 Frequency Limit Control by Pressure Equalization (ME1R Series)..252 1.11 HR Changeover Control (ME1R Series) ..........253 1.12 Pump Down Residual Operation ............254 1.13 Step Down / Safety Control →...
  • Page 7 PACD011001C2 2.4 Operation of The Remote Controller’s Inspection / Test Operation Button ................339 2.5 Remote Controller Service Mode ............340 2.6 Remote Controller Self-Diagnosis Function (Display of Malfunction Code) ..............342 3. Troubleshooting ..................344 3.1 Indoor Unit: Error of External Protection Device ........344 3.2 Indoor Unit: PC Board Defect...............345 3.3 Indoor Unit: Malfunction of Drain Level Control System (33H).....346 3.4 Indoor Unit: Fan Motor (M1F) Lock, Overload........347...
  • Page 8 PACD011001C2 5. Troubleshooting (Inverter)..............382 5.1 Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise................382 5.2 Outdoor Unit: Inverter Instantaneous Over-Current ......383 5.3 Outdoor Unit: Inverter Thermostat Sensor, Compressor Overload ..384 5.4 Outdoor Unit : Inverter Stall Prevention, Compressor Lock ....385 5.5 Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board ..........386 5.6 Power Supply Insufficient or Instantaneous Failure ......387...
  • Page 9 PACD011001C2 1.1 Outdoor Unit Refrigerant System Diagram...........414 1.2 Flow of Refrigerant in Each Operating Mode ........417 2. List of Safety Device and Function Parts Setting Value......421 2.1 Outdoor Unit ..................421 2.2 Indoor Unit....................422 3. Outline of Control ................425 3.1 Outdoor Unit ..................425 3.2 Indoor Unit....................445 3DUW#6 7HVW#2SHUDWLRQ 111111111111111111111111111111111111111111111111111111111111111 784 1.
  • Page 10 PACD011001C2 3.11 Indoor Unit: Malfunction of Thermistor (R1T) for Air Inlet.....508 3.12 Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller ................509 3.13 Outdoor Unit: Actuation of Safety Device..........510 3.14 Outdoor Unit: PC Board Defect ............511 3.15 Outdoor Unit: Actuation of High Pressure Switch.........512 3.16 Outdoor Unit: Actuation of Low Pressure Switch .........513 3.17 Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E)............514...
  • Page 11 PACD011001C2 6.4 Improper Combination of Optional Controllers for Centralised Control ................546 6.5 Address Duplication, Improper Setting..........547 7. Troubleshooting (OP: Schedule Timer)..........548 7.1 Malfunction of Transmission Between Central Remote Controller and Indoor Unit............548 7.2 PC Board Defect ..................549 7.3 Malfunction of Transmission Between Optional Controllers for Centralised Control......550 7.4 Improper Combination of Optional Controllers for Centralised Control .................551...
  • Page 12 PACD011001C2 5. Typical Wiring Mistakes ..............591 5.1 Typical Wiring Mistakes................591 6. Interface Adaptor.................598 6.1 BMS Interface Adaptor for Unified Group (KRP2A51·52) ....598 6.2 BMS Interface Adaptor for Individual and Unified Control (KRP4A51 / KRP4A52 / KRP4A53)............603 6.3 Signal Output Adaptor PCB for Optional Accessory (KRP1B61 / KRP1B2 / KRP1B3)............606 6.4 Interface Adaptor for Urban Split Series (CZ-102AP11P) ....608 6.5 Interface Adaptor for Other Air Conditioners (CZ-103AP11P) .....610...
  • Page 13 PACD011001C2 Table of Contents...

  • Page 14: Introduction

    PACD011001C2 Introduction 1. Introduction Safety Cautions „ Be sure to read the following safety cautions before conducting repair work. Cautions and „ The caution items are classified into “ Warnings Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “...
  • Page 15 Introduction PACD011001C2 Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.
  • Page 16 PACD011001C2 Introduction Warning When connecting the cable between the indoor and outdoor units, make sure that the terminal cover does not lift off or dismount because of the cable. If the cover is not mounted properly, the terminal connection section can cause an electrical shock, excessive heat generation or fire.
  • Page 17 Introduction PACD011001C2 Caution If the installation platform or frame has corroded, replace it. Corroded installation platform or frame can cause the unit to fall, resulting in injury. Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding can cause an electrical shock.

  • Page 18: Survey Of Possible Um Outdoor Units

    PACD011001C2 Introduction Survey of Possible UM Outdoor Units UM outdoor units are available in 5 to 30HP format to precisely meet the needs of any building size. Modular design enables UM outdoor units to be joined together in rows with an outstanding degree of uniformity.

  • Page 19: Survey Of Possible Um Indoor Units

    Introduction PACD011001C2 Survey of Possible UM Indoor Units Size Refrigerant Type Model Name 2-Way Cassette Type CS-LMHPP — — — 4-Way Cassette Type CS-UMHPP — — Corner Type CS-DM1HPK — — — — — — — Built-in Type CS-FMHPP — —...

  • Page 20: Nomenclature

    PACD011001C2 Introduction Nomenclature 1.4.1 Outdoor Unit Refrigerant etc. K~P : R-407C A~E : R-22 Destination P : Europe Power supply S, X : 3φ, 400V, 50Hz Type X : Inverter heat pump E : Heat recovery inverter A : Combination inverter : main unit B : Combination inverter : sub unit M : Urban Multi (UM) Capacity...
  • Page 21 Introduction PACD011001C2 1.4.2 Indoor Unit Refrigerant etc. K~P : R-407C / R-22 Destination P : Europe Power supply H : 1φ, 230V, 50Hz M : Urban Multi (UM) Type L : 2-way cassette type U : 4-way cassette type D : Corner type F : Built-in type N : Small duct type E : Ducted type...

  • Page 22: 80#6Hulhv#8Vlqj#5055

    PACD011001C2 80#6HULHV#8VLQJ#5055# 80#6HULHV#8VLQJ#5055# 80#6HULHV#8VLQJ#5055# 80#6HULHV#8VLQJ#5055# 0;4#6HULHV 0;4#6HULHV 0;4#6HULHV 0;4#6HULHV ,QYHUWHU ,QYHUWHU ,QYHUWHU ,QYHUWHU +HDW#5HFRYHU\ +HDW#5HFRYHU\ 0(4#6HULHV +HDW#5HFRYHU\ +HDW#5HFRYHU\ 0(4#6HULHV 0(4#6HULHV 0(4#6HULHV Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 23 PACD011001C2 Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 24 PACD011001C2 3DUW4 3DUW4 3DUW4 3DUW4 *HQHUDO#,QIRUPDWLRQ *HQHUDO#,QIRUPDWLRQ *HQHUDO#,QIRUPDWLRQ *HQHUDO#,QIRUPDWLRQ 1. Outline of System..................4 1.1 MX1 Series....................4 Changes in “MX1” Series Functions / Parts ..........5 1.3 ME1 Series....................7 General Information Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 25: Outline Of System

    Outline of System PACD011001C2 1. Outline of System MX1 Series 1.1.1 Urban Multi Inverter MX1 Series System Outline General Information Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 26: Changes In "Mx1" Series Functions / Parts

    PACD011001C2 Outline of System Changes in “MX1” Series Functions / Parts 1.2.1 Changes in the System as a Whole More outdoor units A maximum of 16 indoor units can now be connected to a single system. can be connected. 5HP ..8 units 8HP ..
  • Page 27 Outline of System PACD011001C2 UM Inverter MX1 Series Outdoor unit Indoor Outdoor Indoor Outdoor Indoor Outdoor -outdoor -outdoor -outdoor -outdoor -outdoor -outdoor F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 To other outdoor unit To indoor unit Indoor unit F1 F2...

  • Page 28: Me1 Series

    PACD011001C2 Outline of System ME1 Series 1.3.1 System Outline „ Allows individual control of different types of indoor units with varying capacities totaling 50 to 130% of the outdoor unit capacity. ∗ When total indoor capacity exceeds 100%, indoor unit operating capacity may decrease slightly if all indoor units are operated at the same time.
  • Page 29 Outline of System PACD011001C2 1.3.2 Allowed Range of Indoor Unit and HR Box Connection Range A Range B HR box Range C Range C Range C Range C Indoor unit ( Cooling ( Cooling only unit ) only unit ) (M103) „...

  • Page 30: 3Duw#5 )Xqfwlrq111111111111111111111111111111111111111111111111111111111111111111111111111111

    PACD011001C2 3DUW#5 3DUW#5 3DUW#5 3DUW#5 )XQFWLRQ )XQFWLRQ )XQFWLRQ )XQFWLRQ 1. Function ....................10 1.1 Outdoor Unit Refrigerant System Diagram..........10 1.2 List of Safety Devices and Functional Parts Setting Values....18 1.3 Flow of Refrigerant in Each Operation Mode (ME1 Series) ....20 1.4 Outline of Control (ME1 Series) .............25 1.5 Safety for Restart ...................27 1.6 Equalized Oil Level Operation (Equalized Oil Level between Twin Compressors).........30...

  • Page 31: Function

    Function PACD011001C2 1. Function Outdoor Unit Refrigerant System Diagram 1.1.1 CU-5MX1SPE Function Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 32 PACD011001C2 Function A. Compressor M1C Scroll compressor that operates on 30~116Hz by inverter drive enables 13-step capacity control. Capacity control is carried out for individual and linear control of indoor units. B. Oil separator The oil separator is a device that collects the oil discharged from the compressor. The collected oil is constantly recycled to the compressor via capillary tube.
  • Page 33 Function PACD011001C2 1.1.2 CU-8·10MX1SPE SENPH 4D014597 Function Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 34 PACD011001C2 Function A. Compressor M1C / M2C Connecting a scroll compressor (inverter compressor) that operates on 30~116Hz by inverter drive and a scroll compressor (standard compressor) that runs on a commercial power supply to the same refrigerant system enables 21-step capacity control. Capacity control is carried out for individual and linear control of indoor units.
  • Page 35 Function PACD011001C2 1.1.3 CU-8·10ME1XPA (Heat Recovery) Function Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 36 PACD011001C2 Function A. Compressor The 20-step capacity control is achieved by the inverter scroll compressor that uses an inverter for frequency control in a range of 30 to 116 Hz and the standard scroll compressor that uses commercial power supply. The compressors allow individual control of indoor units and linear control. (M1C : inverter compressor, M2C : standard compressor) B.
  • Page 37 Function PACD011001C2 1.1.4 HR Box CZ-100HR1HE A. Solenoid valve (suction side) Y2S This solenoid valve turns ON when normal cooling operation and discharge/suction oil return operation. (Connect indoor unit gas pipe and outdoor unit suction pipe.) B. Solenoid valve (discharge side) Y3S Turn ON this valve to operate of discharge oil return when indoor unit is set for heating.
  • Page 38 PACD011001C2 Function 1.1.5 Function of Thermistors and Pressure Sensors Outdoor Unit CU-8·10MX1SPE Function Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 39: List Of Safety Devices And Functional Parts Setting Values

    Function PACD011001C2 List of Safety Devices and Functional Parts Setting Values 1.2.1 CU-5·8·10MX1SPE Item Symbol Name Type CU-5MX1SPE CU-8MX1SPE CU-10MX1SPE Comp- Inverter 3φ, JT100BAVYE 3.5 kW JT100BAVTYE 3.5 kW JT100BAVTYE 3.5 kW ressor side Model 380~415V JT100BATYE 2.2 kW JT160BATYE 3.75kW Output Compressor safety thermostat...
  • Page 40 PACD011001C2 Function 1.2.2 CU-8·10ME1XPA Item Symbol Name Type CU-8ME1XPA CU-10ME1XPA Comp- Inverter 3φ, JT100BAVTYE 3.5 kW JT100BAVTYE 3.5 kW ressor side Model 380~415V JT100BATYE 2.2 kW JT160BATYE 3.75kW Output Compressor safety thermostat Discharge pipe thermistor 135°C OFF J1HC/ Crank case heater 33W+33W J2HC Over-current...

  • Page 41: Flow Of Refrigerant In Each Operation Mode (Me1 Series)

    Function PACD011001C2 Flow of Refrigerant in Each Operation Mode (ME1 Series) 1.3.1 Cooling Function Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 42 PACD011001C2 Function 1.3.2 Heating Function Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 43 Function PACD011001C2 1.3.3 Simultaneous Cooling and Heating Function Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 44 PACD011001C2 Function 1.3.4 Discharge Oil Return, Defrost Function Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 45 Function PACD011001C2 1.3.5 Suction Oil, Defrost Function Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 46: Outline Of Control (Me1 Series)

    PACD011001C2 Function Outline of Control (ME1 Series) 1.4.1 Inverter Compressor, Motorized PI Control 1. Compressor PI control „ Cooling operation Controls TeS (target Te value) at constant ··· Constant-level control of Te (low pressure equivalent saturation temperature) TeS = 5.5°C „...
  • Page 47 Function PACD011001C2 Heat exchanger mode Heat exchanger 1 Heat exchanger 2 EV mode Cooling operation COND COND H + ON COND COND L + ON ↑  COND COND H + OFF   COND COND L + OFF  COND EVAP H + ON...

  • Page 48: Safety For Restart

    PACD011001C2 Function Safety for Restart 1.5.1 Restart Safety Timer The compressor will not run for five minutes by making forced thermostat OFF condition in order to prevent it from being turned on and off in rapid succession, and to equalize pressure in the refrigerant circuit. It however restarts automatically after five minutes passes if it is in thermostat ON condition.
  • Page 49 Function PACD011001C2 1.5.3 Pump Down Start If the compressor stops running with refrigerant still remaining in the accumulator, in order to prevent wet operation at the next compressor starting, it will perform pump down start with a completely dry accumulator, then it will operate normally. Pump down start should be performed if the unit is in any of the conditions given below when pressure equalizing control has been completed before start.
  • Page 50 PACD011001C2 Function 1.5.4 Heating Lay-Up Start If the compressor hasn’t run for a long time and the refrigerant isn’t circulated, foaming could cause a lack of oil when the compressor is started at the next time. It should therefore perform heating lay-up start to keep the low pressure from dropping too low in the following cases.

  • Page 51: Equalized Oil Level Operation (Equalized Oil Level Between Twin Compressors)

    Function PACD011001C2 Equalized Oil Level Operation (Equalized Oil Level between Twin Compressors) If using two compressors (8, 10Hp) connected in parallel, oil level equalizing is carried out for 5 minutes when the cumulative running time of the standard compressor exceeds 2 hours in order to prevent lack of oil caused by difference in pressure inside the dome due to drift, and then reverts to normal operation.

  • Page 52: Oil Return Operation

    PACD011001C2 Function Oil Return Operation 1.7.1 MX1 Series In order to collect refrigeration oil held up in connecting piping, the compressor’s operating time is counted, and oil return operation is carried out for 4 minutes every 8 hours (2 hour after turning on the power supply, and every 8 hours after that).
  • Page 53 Function PACD011001C2 1.7.2 ME1 Series In order to collect refrigeration oil held up in connecting piping, the compressor’s operating time is counted, and oil return operation is carried out for 8 minutes 30 seconds every 8 hours (2 hour after turning on the power supply, and every 8 hours after that).

  • Page 54: Defrost

    PACD011001C2 Function Defrost 1.8.1 MX1 Series „ Function Defrost operation is carried out if the relation of the outdoor unit’s coil temperature (Tcoil) and outdoor temperature (Tair) satisfies the conditions given below for 5 minutes continuously. Tcoil ≤ C · Tair- α •...
  • Page 55 Function PACD011001C2 1.8.2 ME1 Series Melts frost which might collect on outdoor heat exchangers during heating in order to recover their heat transfer performance. Conditions for executing defrost At least 20 minutes have elapsed since completion of oil return or since compressor starts. High pressure <...
  • Page 56 PACD011001C2 Function Operation Contents Step 1 → Discharge defrost k = kg/cm² Compressor 86Hz + OFF 1 Minute Elapses 2000pls Preparation for Defrost Outdoor Unit Fan OFF + OFF Outdoor Unit Heat Exchanger Condenser Upper Limit Frequency Limited to 38Hz + ON 4 Way Valve (VF015) Injection 1...

  • Page 57: Pressure Equalization Control (Me1 Series)

    Function PACD011001C2 Pressure Equalization Control (ME1 Series) The discharge gas and suction gas pipes are bypassed to eliminate differential pressure between the inlet and outlet of the solenoid valve during HR box(e)s solenoid switching operations. „ Equalizing operation demand → Pressure equalization solenoid valve (Y1S) is ON at following conditions.

  • Page 58: Frequency Limit Control By Pressure Equalization (Me1 Series)

    PACD011001C2 Function 1.10 Frequency Limit Control by Pressure Equalization (ME1 Series) The compressor operating capacity is limited to prevent abnormal noise caused by the equalizing operation. Operating conditions Equalizing operation demand issued & Not in cooling operation only During the first 30 seconds, the following operations are conducted. INV outdoor unit Compressor operating capacity 54Hz + OFF...

  • Page 59: Changeover Control (Me1 Series)

    Function PACD011001C2 1.11 HR Changeover Control (ME1 Series) The solenoid valve of the HR box is switched according to the indoor unit operating condition. Normal operation Oil return, defrost Oil return, defrost Discharge defrost Condition 1 Condition 3 Cooling Discharge oil return Oil return, defrost complete Suction defrost Condition 2...

  • Page 60: Pump Down Residual Operation

    PACD011001C2 Function 1.12 Pump Down Residual Operation 1.12.1 MX1 Series If refrigerant is remaining in the accumulator when the compressor starts, liquid refrigerant is sucked into the compressor, diluting the refrigerant machine oil and reducing the lubricating performance. To prevent this, the pump-down operation discharges refrigerant from the low pressure side when the unit is not in operation.
  • Page 61 Function PACD011001C2 Outdoor Unit Function Outdoor air (R1T) Compressor Electronic Pressure equalizing Time expansion valve solenoid valve R1T < -10°C 86Hz 0~300 pulses ON or OFF 10 min. -10°C ≤ R1T < 0°C 76Hz 0~300 pulses ON or OFF 10 min. R1T ≥...
  • Page 62 PACD011001C2 Function Outdoor Unit Function Outdoor air (R1T) Compressor Electronic expansion Time valve R1T < -10°C 86Hz 0~300 pulses 10 min. -10°C ≤ R1T < 0°C 76Hz 0~300 pulses 10 min. R1T ≥ 0°C 60Hz 0~300 pulses 10 min. „ During defrost or oil return, residual operation is not carried out even if a stop command comes. Notes „...

  • Page 63: Step Down / Safety Control → Standby (Forced Thermostat Off) → Stop Due To Malfunction

    Function PACD011001C2 Step Down / Safety Control → Standby (Forced Thermostat OFF) → Stop Due 1.13 to Malfunction 1.13.1 MX1 Series High Pressure (Hp) Control (Cooling) Hp≥23.5kg/cm² Hp≥24.0kg/cm² (2.303MPa) (2.352MPa) Frequency 8, 10HP(5HP) 76Hz+OFF(48Hz) 1 STEP DOWN Hp>25.0kg/cm² Hp>27.5kg/cm² (2.450MPa) (2.695MPa) (Heating) Forced OFF...
  • Page 64 PACD011001C2 Function Discharge Super (DSH = Td - high pressure condensation saturation temperature) Heating (DSH) During both the inverter and standard compressors are running, when the injection valve for either one Control goes OFF and discharge super heating (DSH) continues for 10 minutes at temperature difference of less than 10°C, the inverter+standard compressor are controlled at 76 Hz or less+OFF for 3 minutes.
  • Page 65 Function PACD011001C2 Discharge Super (DSH = Td - high pressure condensation saturation temperature) Heating (DSH) During both the inverter and standard compressors are running, when the injection valve for either one Control goes OFF and discharge super heating (DSH) continues for 10 minutes at temperature difference of less than 10°C, the inverter+standard compressor are controlled at 76 Hz or less+OFF for 3 minutes.

  • Page 66: Control During Low Outdoor Air Temperature Cooling

    PACD011001C2 Function 1.14 Control During Low Outdoor Air Temperature Cooling When the outdoor air temperature is low in cooling operation, outdoor unit fans, electronic expansion valve and compressors are controlled as follows in order to primarily maintain high pressure and to protect drop in refrigerant circulation caused by drop in high pressure.
  • Page 67 Function PACD011001C2 Low Outdoor Air Cooling in Conditions satisfied • Compressor off Conditions (Step 2) Normal operation • Other than cooling (includes oil return) • High pressure > 15.8 kg/cm² (1.548 MPa) • Cooling with compressor running • Radiator fin temperature > 80˚C (doesn't include oil return) &...

  • Page 68: Low Noise Control

    PACD011001C2 Function 1.15 Low Noise Control If the sound produced by outdoor units is a problem at night, etc., you can reduce the running noise by 2 to 3 dB by running the outdoor unit fans and compressors at low speed via contact input (low noise input) from outside.

  • Page 69: Demand Control

    Function PACD011001C2 1.16 Demand Control When you like to save the power consumption, there are three modes of demand operation which controls forced capacity save for outdoor units via contact input (demand input) from outside in order to control demand. Demand 1: Holds electric power consumption down to approx.

  • Page 70: Compressor Capacity Control

    PACD011001C2 Function 1.17 Compressor Capacity Control CU-5 Pressure is sampled every 20 seconds by pressure sensor, and the inverter compressor is controlled in 13 stages by microcomputer. Frequency range: 34 - 116 Hz (13 stages) and common for 50/60Hz area. Min.

  • Page 71: Te / Tc Setting

    Function PACD011001C2 1.18 Te / Tc Setting You can alter the value of targets Te (evaporating pressure equivalent temperature) and Tc (condensing pressure equivalent temperature) with setting mode 2. PI control is used to control compressor capacity so that Te when cooling and Tc when heating are constant. Te setting Set temperature High...

  • Page 72: Gas Depletion Alarm

    PACD011001C2 Function 1.19 Gas Depletion Alarm An alarm (U0) is given for severe gas depletion. Alarm is indicated but operation continues. When cooling Gas depletion alarm (U0) is displayed. While compressor is running Conditions given on the left continue for 30 min. Low pressure <...

  • Page 73: Drain Pump Control

    Function PACD011001C2 1.20 Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below). 1.20.1 When the Float Switch is Tripped while the Cooling Thermostat is ON: ∗ 1. The objective of residual operation is to completely drain any moisture adhering to the fin of the indoor unit heat exchanger when the thermostat goes off during cooling operation.
  • Page 74 PACD011001C2 Function 1.20.3 When the Float Switch is Tripped during Heating Operation: During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset. 1.20.4 When the Float Switch is Tripped and “AF”...

  • Page 75: Oil Temperature Sensor (8 And 10 Hp Only)

    Function PACD011001C2 1.21 Oil Temperature Sensor (8 and 10 Hp only) 1.21.1 Prevention of Wetness during Heating ‹ Wet operation is prevented by modification of super heating (SH) by oil temperature sensor (R5T). (Low equivalent pressure = Te) R5T ≤ Te+10˚C SH=10˚C SH=5˚C R5T >...

  • Page 76: Louver Control For Preventing Ceiling Dirt

    PACD011001C2 Function 1.22 Louver Control for Preventing Ceiling Dirt We have added a control feature that allows you to select the range of in which air direction can be adjusted in order to prevent the ceiling surrounding the air discharge outlet of ceiling mounted cassette type units from being soiled.

  • Page 77: Thermostat Sensor In Remote Controller

    Function PACD011001C2 1.23 Thermostat Sensor in Remote Controller Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use”.) Cooling If there is a significant difference in the preset temperature and the suction temperature, fine adjustment...
  • Page 78 PACD011001C2 Function Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset temperature.

  • Page 79: Freeze Prevention

    Function PACD011001C2 1.24 Freeze Prevention Freeze Prevention When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit heat by Off Cycle exchanger drops too low, the unit enters freeze prevention operation in accordance with the following (Indoor Unit) conditions, and is also set in accordance with the conditions given below.

  • Page 80: 3Duw6

    PACD011001C2 3DUW6 3DUW6 3DUW6 3DUW6 7HVW#2SHUDWLRQ 7HVW#2SHUDWLRQ 7HVW#2SHUDWLRQ 7HVW#2SHUDWLRQ 1. Test Operation ..................60 1.1 Procedure and Outline ................60 1.2 When Power is Turned On ..............62 1.3 Outdoor Unit PC Board Ass’y..............63 1.4 Setting Modes (MX1 Series) ..............67 1.5 Setting Modes (ME1 Series) ..............73 1.6 Sequential Start..................79 1.7 BMS Interface Adaptor for Outdoor Unit (MX1 Series) ......80 1.8 BMS Interface Adaptor for Outdoor Unit (ME1 Series) ......83...

  • Page 81: Test Operation

    Test Operation PACD011001C2 Test Operation Procedure and Outline The operation sequence is the most important thing for test operation. Follow the following outline. 1.1.1 Check The Following Before Turning Power On. Mistaken power wiring, loose screws Mistaken control transmission wiring, loose screws Piping size, presence of thermal insulation Measurement of main power circuit insulation Use a 500V megar-tester.
  • Page 82 PACD011001C2 Test Operation 1.1.3 Check Operation. Carry out wiring check operation, For wiring check operation procedure, see wiring and check wiring and piping connections. check operation. Set the operation mode to ”cool.“ Even if it's the heating season, set to cooling mode in order to prevent liquid from backing Set to the test operation mode To enter the test operation mode, push the...

  • Page 83: When Power Is Turned On

    Test Operation PACD011001C2 When Power is Turned On 1.2.1 When Turning Power on the First Time The unit will not run for up to 12 minutes in order for master power supply and address (indoor unit address, etc.) to be set automatically. Outdoor unit Warning lamp (HWL) ....

  • Page 84: Outdoor Unit Pc Board Ass'y

    PACD011001C2 Test Operation Outdoor Unit PC Board Ass’y 1.3.1 CU-8·10MX1SPE Test Operation Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 85 Test Operation PACD011001C2 Service monitor <HAP> Normal ....Flicker (Green) Malfunction ..On or off Function setting switch or LED LED display : On : Flicker : Off Mode button ..Mode change Monitor mode Setting mode 1 Push 1 time. Push 1 time.
  • Page 86 PACD011001C2 Test Operation 1.3.2 CU-8·10ME1XPA (Heat Recovery) Test Operation Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 87 Test Operation PACD011001C2 Service monitor <HAP> Normal ....Flicker (Green) Malfunction ..On or off Function setting switch or LED LED display : On : Flicker : Off Mode button ..Mode change Monitor mode Setting mode 1 Push 1 time. Push 1 time.

  • Page 88: Setting Modes (Mx1 Series)

    PACD011001C2 Test Operation Setting Modes (MX1 Series) The three setting modes are as follows: ‹ Setting mode 1 ..Mode for selecting cool/heat setting method, and whether or not to use low noise operation and sequential start. (H1P off) ‹ Setting mode 2 ..Mode for changing operating status and setting addresses;...
  • Page 89 Test Operation PACD011001C2 1.4.1 Setting Mode 1 Cool/heat selection setting If carried out from the indoor unit remote controller: If carried out from the cool/heat selector: (SS1) IN/D OUT/D IN/D OUT/D UNIT UNIT UNIT UNIT SELECT SELECT (Factory set) The factory settings are: C/H SELECT SEQ.
  • Page 90 PACD011001C2 Test Operation 1.4.2 Setting Mode 2 To enter setting mode 2 from setting mode 1 (normal), you must push and hold the MODE button (BS1) for 5 seconds. (Setting mode 2 cannot be entered while still making settings in setting mode 1.) Setting procedure 1.
  • Page 91 Test Operation PACD011001C2 No Setting item Description LED display LED display LED display H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Emergency Emergency operation ∗ 1 operation when malfunction Normal operation occurs...
  • Page 92 PACD011001C2 Test Operation 1.4.3 Monitor Mode C/H SELECT SEQ. MODE TEST L.N.O.P. START MASTER SLAVE To enter the monitor mode, push the MODE button when in setting mode 1. MODE The lower 4 digits indicate the setting in each of the frames below.
  • Page 93 Test Operation PACD011001C2 Monitor Mode Data Mode No. Data Display Size (binary number) method {ýOýOýOýOýOý{ No 1 Cool/heat group address 0 ~ 31 Lower 6 digits {ýOýOýOýOý{ýO No 2 Low noise / demand address 0 ~ 31 Lower 6 digits {ýOýOýOýOý{ { No 3 Not used...

  • Page 94: Setting Modes (Me1 Series)

    PACD011001C2 Test Operation Setting Modes (ME1 Series) The three setting modes are as follows: ‹ Setting mode 1 ..Mode for selecting cool/heat setting method, and whether or not to use low noise operation and sequential start. (H1P off) ‹ Setting mode 2 ..Mode for changing operating status and setting addresses; used primarily for service.
  • Page 95 Test Operation PACD011001C2 1.5.1 Setting Mode 1 The factory settings are: TEST C/H SELECT SEQ. Individual (C/H SELECT), OFF (L.N.O.P.), ON (SEQ. START) MODE L.N.O.P. START MASTER SLAVE You can change the low noise and sequential start settings by pushing the SET switch. To skip settings you don't want to change, push the RETURN switch and go to the next setting.
  • Page 96 PACD011001C2 Test Operation 1.5.2 Setting Mode 2 To enter setting mode 2 from setting mode 1 (normal), you must push and hold the MODE button (BS1) for 5 seconds. (Setting mode 2 cannot be entered while still making settings in setting mode 1.) Setting procedure 1.
  • Page 97 Test Operation PACD011001C2 No Setting item Description LED display LED display LED display H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Emergency Emergency operation ∗ 1 operation when malfunction Normal operation occurs...
  • Page 98 PACD011001C2 Test Operation 1.5.3 Monitor Mode TEST C/H SELECT SEQ. MODE L.N.O.P. START MASTER SLAVE To enter the monitor mode, push the MODE button when in setting mode 1. MODE The lower 4 digits indicate the setting in each of the frames below.
  • Page 99 Test Operation PACD011001C2 Monitor Mode Data Mode No. Data Display Size (binary number) method {ýOýOýOýOý{ýO No 1 Low noise / demand address 0 ~ 31 Lower 6 digits {ýOýOýOýOý{ { No 2 Not used {ýOýOýOý{ýOýO No 3 Not used 0 ~ 63 Lower 6 digits {ýOýOýOý{ýOý{ No 4...

  • Page 100: Sequential Start

    PACD011001C2 Test Operation Sequential Start Separates the start timing for standard compressors by three seconds each in order to prevent over-current when several compressors are to be started simultaneously. Sequential start is possible for up to three units wired as a group to a single power supply. You should however connect an outdoor unit of small capacity as the third unit in the sequence.

  • Page 101: Bms Interface Adaptor For Outdoor Unit (Mx1 Series)

    Test Operation PACD011001C2 BMS Interface Adaptor for Outdoor Unit (MX1 Series) Purpose / BMS interface adaptor for outdoor unit is required in order for the UM MX1 Series to carry out the types of Application control given below. 1. Group switching of cool/heat mode for more than one outdoor unit system. The adaptor is required for cool/heat selection by indoor unit remote controller, by cool/heat selector, or by cool/heat central remote controller.
  • Page 102 PACD011001C2 Test Operation System Examples Group selection of cool/heat mode by indoor unit remote controller „ SS1 Switch Settings on the Adaptor PCB BOTH C / H BOTH C / H FUNCTION FUNCTION BOTH C / H (VL021) „ SS2 CENTRAL C / H SELECTOR...
  • Page 103 Test Operation PACD011001C2 „ Group master unit Outdoor Unit PCB Settings SS1: “IN/D UNIT” Setting mode 1 C / H SELECT : “MASTER” Setting mode 2 Cool/heat group address: “0” Combines DS1 and DS2 of PC board adaptor. „ Group slave unit SS1: “IN/D UNIT”...

  • Page 104: Bms Interface Adaptor For Outdoor Unit (Me1 Series)

    PACD011001C2 Test Operation BMS Interface Adaptor for Outdoor Unit (ME1 Series) <Objective/use> By adding an BMS interface adaptor for outdoor unit to HR boxes or indoor units connected in a UM net, you can simultaneously select cool/heat mode for several outdoor units in the system, and it enables demand control and low noise control.
  • Page 105 Test Operation PACD011001C2 <Settings of switches on the PC board adaptor> „SS1 (“BOTH” is selected when demand control is carried out at the same time.) C / H BOTH C / H (SL302) „SS2 (SL303) „DS1·2 BMS interface adaptor for outdoor unit <Changeover by cool/heat central remote controller>...
  • Page 106 PACD011001C2 Test Operation 1.8.2 Demand / low noise control Connecting control input to the BMS interface adaptor for outdoor unit enables demand and low noise control. „ Demand control (figures indicate demand rate) When short circuit between (1) and (C): Approx. 70% as a guideline When short circuit between (2) and (C): Approx.
  • Page 107 Test Operation PACD011001C2 <Control input specifications> „ Input signal Constant contact a Input current is approx. 12 - 24 VDC, 10 mA per contact. Use a micro-current contact for the relay contact. (Max. 12 VDC, 1 mA) „ Outside wiring specifications Recommended electric wiring: Sheathed vinyl cord or cable 0.75 1.25 mm²...

  • Page 108: Cool / Heat Mode Selection (Mx1 Series)

    PACD011001C2 Test Operation Cool / Heat Mode Selection (MX1 Series) The UM MX1 Series offers the following four cool/heat mode selections. 1. Setting of cool/heat by individual outdoor unit system by indoor unit remote controller 2. Setting of cool/heat by individual outdoor unit system by cool/heat selector 3.
  • Page 109 Test Operation PACD011001C2 1.9.2 Setting of Cool / Heat by Individual Outdoor Unit System by Cool/Heat Selector „ Doesn’t matter whether or not there is outdoor - outdoor unit wiring. „ Set SS1 of the outdoor unit PC board to “OUT / D UNIT.” „...
  • Page 110 PACD011001C2 Test Operation 1.9.3 Setting of Cool / Heat by Outdoor Unit System Group in Accordance with Group Master Outdoor Unit by Indoor Unit Remote Controller „ Install the BMS interface adaptor for outdoor unit on either the outdoor - outdoor, indoor - outdoor, or indoor - indoor transmission line.
  • Page 111 Test Operation PACD011001C2 „ Supplement to 1.9.3 and 1.9.4 Supplement If using several adaptor PCB and you want to select cool/heat mode for each adaptor PCB, set DS1 / DS2 of the adaptor PCB and the cool/heat group address on the outside unit’s PCB to the same setting in setting mode 2.
  • Page 112 PACD011001C2 Test Operation Setting Method 1.9.3 and 1.9.4 address setting method (combine lower 5 digits as binary number) Test Operation Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 113: Cool / Heat Mode Switching (Me1 Series)

    Test Operation PACD011001C2 1.10 Cool / Heat Mode Switching (ME1 Series) The UM “ME1 Series” heat recovery system offers the following 3 cool/heat modes. 1. Set cool/heat individually for all HR box systems using the indoor unit remote controller. 2. Set cool/heat individually for all HR box systems using the cool/heat select remote controller. 3.
  • Page 114 PACD011001C2 Test Operation 1.10.3 Set cool/heat individually for all HR box systems using the cool/heat central remote controller. „ Install the "BMS interface adaptor for outdoor unit" in HR box. Test Operation Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 115: Low Noise / Demand Operation (Mx1 Series)

    Test Operation PACD011001C2 1.11 Low Noise / Demand Operation (MX1 Series) BMS interface adaptor for outdoor unit is required for each low noise and demand control zone. „ By using a separate BMS interface adaptor for outdoor unit and setting the outdoor unit address (setting mode 2) for each low noise and demand control zone, demand and low noise operation is carried out in accordance with contact input received from the adaptor in each zone.
  • Page 116 PACD011001C2 Test Operation Wiring Method Wire to the control box for the indoor unit or HR box. (Note: Differs according to the type of outside control adaptor.) Demand / Low Short circuit between Demand 1 and C: Holds demand down to approx. 70% Noise Input Short circuit between Demand 2 and C: Holds demand down to approx.

  • Page 117: Low Noise Operation (Me1 Series)

    Test Operation PACD011001C2 1.12 Low Noise Operation (ME1 Series) By connecting the external contact input to the low noise input of the BMS interface adaptor for outdoor unit (optional), you can save power and lower operating noise by 2 -3 dB. 1.

  • Page 118: Demand Control (Me1 Series)

    PACD011001C2 Test Operation 1.13 Demand Control (ME1 Series) By connecting the external contact input to the demand input of the BMS interface adaptor for outdoor unit (option), the compressor operating conditions can be controlled for reduced power consumption. 1. Demand 1 Approximately 70% level 2.

  • Page 119: Wiring Check Operation

    Test Operation PACD011001C2 1.14 Wiring Check Operation If within 12 hours of stopping cooling or heating, be sure to run all indoor units in the system you want to check in the fan mode for about 60 minutes in order to prevent mis-detection. Operation Method 1.

  • Page 120: Indoor Unit Pcb Ass'y

    PACD011001C2 Test Operation 1.15 Indoor Unit PCB Ass’y The indoor unit PCB ass’y is equipped with terminals for control wiring and connectors for optional control accessories . Group No. setting for central control and various operation setting switches, etc., are set by indoor unit remote controller.

  • Page 121: Remote Controllers (Wired And Wireless)

    Test Operation PACD011001C2 1.16 Remote Controllers (Wired and Wireless) By making use of optional liquid crystal indoor unit remote controller switches, you can construct a versatile control system. The remote controller control wiring for simplified remote controllers (CZ-02RE11P / CZ-03RE11P) is the same as that of standard remote controllers (CZ-01RT11P), but since the functions of the simplified remote controllers are limited, we recommend they should be used together with a central remote controller.
  • Page 122 PACD011001C2 Test Operation „ Cool/heat operation mode selection control Remote Control Example With the UM Inverter MX1, ME1 Series, you can select the cool/heat operation mode for outdoor units in the same system with an indoor unit remote controller. „ Group control Up to 16 indoor units can be simultaneously controlled with a single remote controller.
  • Page 123 Test Operation PACD011001C2 Part Names and Functions Operation mode display 13 Operation mode selector button Push to switch the operation mode. ∗Note Displays status during operation. • “Auto” can be set only for cool/heat simultaneous operation systems. Display programmed time 14 Defrost / hot start display Displays programmed time.
  • Page 124 PACD011001C2 Test Operation 1.16.1 Applicable Wireless Remote Controller Models Type CS-LM CS-DM CS-UM CS-FM CS-TM CS-KM CS-PM CS-EM CS-RM CS-NM Wireless remote H / P CZ-01RWL12P CZ-02RWD12P CZ-01RWU12P CZ-02RWF12P CZ-01RWT12P CZ-01RWK12P CZ-02RWF12P CZ-02RWF12P controller Part Names and Functions Test Operation Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 125 Test Operation PACD011001C2 Test Operation Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 126 PACD011001C2 Test Operation Example of System Using Wireless Remote Controller For control by two remote controllers, be sure to designate the indoor unit remote controller as the master. The only combination that can’t be used is two wireless remote controllers. Transmission wiring between the separately installed receiver unit and indoor unit can be up to 200 meters long.

  • Page 127: Control By Remote Controller (Double Remote Controllers, Group, Remote)

    Test Operation PACD011001C2 1.17 Control by Remote Controller (Double Remote Controllers, Group, Remote) Double Remote Lets you control a single indoor unit using two remote controllers in different locations. Controllers System which is convenient for cases where for instance you may want to control an indoor unit in the reception room from your office, or when you may want to have fine control of a far away indoor unit at your fingertips.
  • Page 128 PACD011001C2 Test Operation Remote Control Forced OFF or ON/OFF control of indoor units can be input from outside. Enables indoor units to be turned on and off by a building control or key control system. 1. Wiring method and specifications Remote control is carried out by connecting input from outside to pins T1 and T2 on the terminal block (for remote controller and transmission wiring) Wiring specifications...

  • Page 129: Indoor Field Setting

    Test Operation PACD011001C2 1.18 Indoor Field Setting Making a field setting Field settings must be made by remote controller if optional accessories have been installed on the indoor unit, or if the indoor unit or HRV unit’s individual functions have been modified. 1.18.1 Wired Remote Controller <CZ-01RT Type>...
  • Page 130 PACD011001C2 Test Operation be set individually. Setting changes also cannot be checked. 3. The second code No. is factory set to “01.” The field set air flow position setting is however factory set to “02.” 4. Do not make settings other than those described above. Nothing is displayed for functions the indoor unit is not equipped with.

  • Page 131: Centralised Control Group No. Setting

    Test Operation PACD011001C2 1.19 Centralised Control Group No. Setting „ If carrying out centralised control by central remote controller or unified ON/OFF controller, group No. CZ-01RT Type must be set for each group individually by remote controller. „ Group No. setting by remote controller for centralised control 1.
  • Page 132 PACD011001C2 Test Operation „ Group No. setting by wireless remote controller for centralised control CZ-01·02RW Type 1. When in the normal mode, push the button for 4 seconds or more, and operation then enters the “field set mode.” 2. Set mode No. “00” with the button.

  • Page 133: Setting Of Master Remote Controller

    Test Operation PACD011001C2 1.20 Setting of Master Remote Controller By Indoor Unit Operation mode (Fan, Dry, Cool, Heat) can be freely selected by indoor unit remote controller for the UM Remote Controller Series outdoor units, however, as shown in the example below, the remote controller of one of the indoor units connected to 1 outdoor unit must be set as the master remote controller for Fan, Dry, Cool, Heat.
  • Page 134 PACD011001C2 Test Operation Operation Contents and Function If you set a Master remote controller The other remote controllers (Remote to COOL/HEAT (Remote controller not displaying controllers displaying <CHANGEOVER UNDER CONTROL>) <CHANGEOVER UNDER CONTROL>) switch to the operation mode set by the master remote controller. However, they can switch to FAN operation and from COOL to If you set a Master remote controller...

  • Page 135: Centralised Control Devices

    Test Operation PACD011001C2 1.21 Centralised Control Devices 1.21.1 Appearance Central Model No. CZ-01ESM11P remote Appearance controller No. of units that can be connected Up to 2 within one control wiring system Unified Model No. CZ-01ANA11P ON/OFF Appearance controller No. of units that can be connected Up to 8 within one control wiring system Schedule...
  • Page 136 PACD011001C2 Test Operation 1.21.2 When Using Centralised Control Device ‹ Up to 128 indoor units can be connected within a system. (Group control is not required to increase the number of units that can be connected within the system.) ‹ When double remote controllers are connected, the same indoor unit cannot be registered for more than one central remote controller.

  • Page 137: Central Remote Controller (Cz-01Esm11P)

    Test Operation PACD011001C2 1.22 Central Remote Controller (CZ-01ESM11P) Enables central control with the performance of a series of remote controllers by connecting with up to 64 groups of indoor units (128 units). ‹ You can connect with up to 64 groups of indoor units (128 units) and monitor or perform operations such as turning on/off individually or simultaneously, setting temperature, etc., by the zone.
  • Page 138 PACD011001C2 Test Operation A Group of Indoor 1. 1 indoor unit with no remote controller Units 2. 1 indoor unit controlled by either 1 or 2 remote controllers 3. Max. 16 indoor units controlled by either 1 or 2 remote controllers Zone Control by A “zone”...
  • Page 139 Test Operation PACD011001C2 1.22.2 Central Remote Controller Part Names and Functions Display Section (All items in the display are lit for the purpose of explanation, contrary to when actually operating.) Refrigerant system display 10 Display of time to clean The inclaction in the square is lit while the refrigerant system is Lights when it’s time to clean the element or filter of any group.
  • Page 140 PACD011001C2 Test Operation Control Section Selector button Clearing button for malfunction code memory Selects group belonging to the zone. Push to reset the malfunction code. Zone setting button 10 Filter sign reset button Turns zone setting mode on or off. Turns the filter cleaning indicator off.
  • Page 141 Test Operation PACD011001C2 Control Wiring (Indoor units in same system shown in the following examples.) Connection Example 1. Series wiring 2. Bus wiring (can be branched in max. 16 locations) Example showing 3 branches 3. Star wiring (can be branched in max. 16 locations) Example showing 3 branches Notes 1.
  • Page 142 PACD011001C2 Test Operation Wiring to Indoor The terminals (F1, F2) of the control terminal block of the central remote controller and the terminals (F1, Units F2) of indoor units for which a group No. has been set are wired as shown in the figure below. (There is no polarity, so it doesn’t matter if F1 and F2 are wired inversely.) ∗...
  • Page 143 Test Operation PACD011001C2 How to Select Whether operation by remote controller will be possible or not for turning on/off, controlling temperature or Operation Mode setting operation mode is selected and decided by the operation mode given on the right edge of the table below.

  • Page 144: Unified On/Off Controller (Cz-01Ana11P)

    PACD011001C2 Test Operation 1.23 Unified ON/OFF Controller (CZ-01ANA11P) Turns each group of indoor units on/off individually or simultaneously for up to 16 groups (128 units), and lets you check the operation/malfunction display all at once at a glance. ‹ Lets you turn up to 16 groups of indoor units (128 units) on/off simultaneously or individually, and lets you check the operation/malfunction display all at once at a glance.
  • Page 145 Test Operation PACD011001C2 A Group of Indoor 1. 1 indoor unit with no remote controller Units Note: If not using remote controllers, use in combination with central remote controller. 2. 1 indoor unit controlled by either 1 or 2 remote controllers 3.
  • Page 146 PACD011001C2 Test Operation Wiring for Indoor Terminals F1 and F2 of the unified ON/OFF controller’s terminal block for control and terminals F1 and F2 Unit of the indoor unit with set group No. are wired as shown in the figure below. (There is no polarity, so it doesn’t matter if F1 and F2 are inverted.) ∗...

  • Page 147: Schedule Timer (Cz-01Esw11P)

    Test Operation PACD011001C2 1.24 Schedule Timer (CZ-01ESW11P) Allows you to connect and manage by unified control the weekly schedule of up to 128 indoor units. ‹ Manages by unified control the weekly schedule of up to 128 indoor units. ‹ Lets you set in 1-minute increments on/off time twice a day by the week. ‹...
  • Page 148 PACD011001C2 Test Operation Wiring for <Indoor unit wiring> Transmission 1. If schedule timer individual use: „ For the schedule timer’s power supply, connect the schedule timer’s connectors (D1/D2) and the connector on the indoor unit’s PC board (CN18) with the attached cable and crimp style terminals. 2.
  • Page 149 Test Operation PACD011001C2 1.24.2 Schedule Timer Part Names and Functions Display Section All items in the display are lit for the purpose of explanation, contrary to when actually operating Programmed time No. Display of programmed time of system start Displays time No. only when used in combination with a central Displays the time when the system is programmed to turn on.
  • Page 150 PACD011001C2 Test Operation Control Section Clock adjusting button Timer ON button Push to set the present time. Sets the present time or programmed time. Button for selecting days of a week Hour/minute button Push when selecting days of a week. Push to adjust the present time or programmed time.

  • Page 151: Combining Different Types Of Centralised Control Devices

    Test Operation PACD011001C2 1.25 Combining Different Types of Centralised Control Devices <CZ-01ESM11P·CZ-01ANA11P·CZ-01ESW11P> In addition to using optional controllers for centralised control independently, you also combine and connect a schedule timer and unified ON/OFF controller with a central remote controller. By designing with components, you can construct the best central remote control system for your purpose and scale.
  • Page 152 PACD011001C2 Test Operation 1.25.2 Connection for Optional Controller for Centralised Control You can use any combination of two central remote controller, one schedule timer, and from one to eight unified ON/OFF controllers. The maximum number of units for a single system is 128. Central remote controller Unified ON/OFF remote controller Schedule timer...
  • Page 153 Test Operation PACD011001C2 1.25.3 Electric Wiring Combination of one central remote controller, one schedule timer and three unified ON/OFF controllers Test Operation Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 154 PACD011001C2 Test Operation Initial Settings of 1. Central remote controller ‹ Leave the connector for setting master controller (CN) connected. (Connected at factory set.) Optional Controllers for Connect this connector to one central control line only. ‹ Control mode Centralised Control Sets priority sequence for control of central remote controller and indoor unit remote controllers.
  • Page 155 Test Operation PACD011001C2 Test Operation Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 156: 3Duw#7 7Urxeohvkrrwlqj 1111111111111111111111111111111111111111111111111111111111111

    PACD011001C2 3DUW#7 3DUW#7 3DUW#7 3DUW#7 7URXEOHVKRRWLQJ 7URXEOHVKRRWLQJ 7URXEOHVKRRWLQJ 7URXEOHVKRRWLQJ 1. Operation Flowcharts ................137 1.1 Indoor Unit Operation Flowchart ............137 1.2 Outdoor Unit Operation Flowchart............142 2. Troubleshooting by Remote Controller ..........146 2.1 The INSPECTION / TEST Button............146 2.2 Self-diagnosis by Wired Remote Controller .........147 2.3 Self-diagnosis by Wireless Remote Controller ........148 2.4 Operation of The Remote Controller’s Inspection / Test Operation Button ................151...
  • Page 157 PACD011001C2 3.29 Malfunction of Transmission between Remote Controller and Indoor Unit ........184 3.30 Malfunction of Transmission between Outdoor Units......185 3.31 Malfunction of Transmission between Master and Slave Remote Controllers........186 3.32 Malfunction of Transmission between Indoor and Outdoor Units in the Same System .....187 3.33 Excessive Number of Indoor Units ............188 3.34 Address Duplication of Central Remote Controller.......189 3.35 Refrigerant System not set, Incompatible Wiring/Piping ......190...

  • Page 158: Operation Flowcharts

    PACD011001C2 Operation Flowcharts Operation Flowcharts Indoor Unit Operation Flowchart Start Power on Initialize electronic expansion valve YIE Louver lock detection   Indicates previous settings for air flow Remote contoller lamp on   rate and direction and temperature Cycle operation using operation Operation ON/OFF? ON/OFF switch...
  • Page 159 Operation Flowcharts PACD011001C2 Cooling operation Auxiliary electric heater (52H): OFF Moisture prevention Swing flap? conditions? Moisture prevention position Swing flap Set direction of air flow Cassette: P1 Suspended :P0 Program dry on/off? Program dry in operation Program dry display: Cancelled Fan M1F operating at set volume of air flow Option...
  • Page 160 PACD011001C2 Operation Flowcharts Program dry operation ∗7 Program dry display ∗8 Fan MF : 6 minutes stopped Thermostat status? then L operation Electronic expansion valve Fan MF : L operation closed (Option) Electronic expansion valve Drain-up kit M1P : Off after 5 degree of super heat control minutes residual operation (VF023)
  • Page 161 Operation Flowcharts PACD011001C2 Heating operation Drain kit (M1P): OFF Swing flap? ∗12 ∗12 Air flow direction setting Swing flap Defrost operation in progress? ∗13 Hot start in progress? Defrost/Hot start display: OFF Defrost/Hot start display: ON Recycling guard timer ON (5 minutes)? Test run in progress? ∗14 Thermostat status?
  • Page 162 PACD011001C2 Operation Flowcharts ∗ 14. Thermostat status ∗ 15 Low discharge air temperature protection Protection is effected when the preset temperature is 24°C or lower and the opening of the electronic expansion valve is slight. Troubleshooting Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 163: Outdoor Unit Operation Flowchart

    Operation Flowcharts PACD011001C2 Outdoor Unit Operation Flowchart Start Power on Initialize electronic expansion valve (Y1E) Fan or temperature control? Temperature control Restart prevention in progress (5 minutes) ? Has indoor unit thermostat on operation signal been output to more than 1 unit? ∗16 Actuation...
  • Page 164 PACD011001C2 Operation Flowcharts Cooling operation ∗18 Start control in progress? Oil equalization in progress? ∗19 Compressor protection operation in progress? ∗22 Low temperature protection operation in progress? Inverter compressor magnetic contactor Inverter output frequency 30~116 Hz by PI 30~116 Hz by PI and 38 Hz 30~116 Hz 42 Hz...
  • Page 165 Operation Flowcharts PACD011001C2 Heating operation ∗18 Start control in progress? Defrosting operation in progress? Oil equalization in progress? ∗23 Compressor protection operation in progress? Inverter compressor magnetic contactor Inverter output frequency 30~116 Hz by PI 30~116 Hz by PI and 38 Hz 86 Hz 42 Hz...
  • Page 166 PACD011001C2 Operation Flowcharts ∗ 20 PI control Controls ON/OFF of the standard compressor and inverter output frequency so that suction pressure is the optimal value. ∗ 21 Discharge temperature protection ∗ 22 Fan control during low temperature protection If Tc is less than 26.1°C for 30 continuous seconds, fan speed changes as follows: H + ON / H + OFF / L + OFF.

  • Page 167: Troubleshooting By Remote Controller

    Troubleshooting by Remote Controller PACD011001C2 2. Troubleshooting by Remote Controller The INSPECTION / TEST Button The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. Depress Inspection/Test Operation button for more than 4 seconds. Indoor unit settings can be made Service data can be obtained.

  • Page 168: Self-Diagnosis By Wired Remote Controller

    PACD011001C2 Troubleshooting by Remote Controller Self-diagnosis by Wired Remote Controller Explanation If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.

  • Page 169: Self-Diagnosis By Wireless Remote Controller

    Troubleshooting by Remote Controller PACD011001C2 Self-diagnosis by Wireless Remote Controller In the Case of If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. CZ-01RW Type The malfunction code can be determined by following the procedure described below. (The malfunction code is displayed when an operation error has occurred.
  • Page 170 PACD011001C2 Troubleshooting by Remote Controller „ The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. Troubleshooting Urban Multi “MX1, ME1 Series” Using R-22...
  • Page 171 Troubleshooting by Remote Controller PACD011001C2 Troubleshooting Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 172: Operation Of The Remote Controller's Inspection / Test Operation Button

    PACD011001C2 Troubleshooting by Remote Controller Operation of The Remote Controller’s Inspection / Test Operation Button Unit Malfunction code Inspection Normal display (No display) Malfunction code blinks when a malfunction occurs. Inspection/test Push the button. operation Unit Example of capacity code display 0 7 1...

  • Page 173: Remote Controller Service Mode

    Troubleshooting by Remote Controller PACD011001C2 Remote Controller Service Mode How to Enter the Service Mode Service Mode 1. Select the mode No. Operation Method Set the desired mode No. with the button. (For wireless remote controller, Mode 43 only can be set.) 2.
  • Page 174 PACD011001C2 Troubleshooting by Remote Controller Mode No Function Contents and operation method Remote controller display example Malfunction hysteresis Display malfunction hysteresis. display The hysteresis No. can be changed with the Unit 1 button. Malfunction code 2-U4 Malfunction code Hysteresis No: 1 - 9 1: Latest (VE007) Display of sensor and...

  • Page 175: Remote Controller Self-Diagnosis Function

    Troubleshooting by Remote Controller PACD011001C2 Remote Controller Self-Diagnosis Function (Display of Malfunction Code) The remote controller switches are equipped with a self diagnosis function so that more appropriate maintenance can be carried out. If a malfunction occurs during operation, the operation lamp, malfunction code and display of malfunctioning unit No.
  • Page 176 PACD011001C2 Troubleshooting by Remote Controller Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Refered Outdoor Malfunction of thermistor (R2T) for heat exchanger Unit (loose connection, disconnection, short circuit, failure) Malfunction of thermistor (R2T) for heat exchanger (loose connection, disconnection, short circuit, failure) Malfunction of discharge pipe pressure sensor Malfunction of suction pipe pressure sensor Malfunction of oil temperature thermistor (R5T)

  • Page 177: Troubleshooting

    Troubleshooting PACD011001C2 3. Troubleshooting Indoor Unit: Error of External Protection Device A0 A0 A0 A0 Remote Controller Display „ Actuation of external protection device Supposed Causes „ Improper field set „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 178: Indoor Unit: Pc Board Defect

    PACD011001C2 Troubleshooting Indoor Unit: PC Board Defect A1 A1 A1 A1 Remote Controller Display „ Defect of indoor unit PC board Supposed Causes Troubleshooting Replace the indoor unit PC board. Troubleshooting Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 179: Indoor Unit: Malfunction Of Drain Level Control System (33H)

    Troubleshooting PACD011001C2 Indoor Unit: Malfunction of Drain Level Control System (33H) A3 A3 A3 A3 Remote Controller Display „ Defect of float switch or short circuit connector Supposed Causes „ Defect of drain pump „ Drain clogging, upward slope, etc. „...

  • Page 180: Indoor Unit: Fan Motor (M1F) Lock, Overload

    PACD011001C2 Troubleshooting Indoor Unit: Fan Motor (M1F) Lock, Overload A6 A6 A6 A6 Remote Controller Display „ Fan motor lock Supposed Causes „ Disconnected or faulty wiring between fan motor and PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 181: Indoor Unit: Malfunction Of Swing Flap Motor (M1S)

    Troubleshooting PACD011001C2 Indoor Unit: Malfunction of Swing Flap Motor (M1S) A7 A7 A7 A7 Remote Controller Display „ Defect of swing motor Supposed Causes „ Defect of connection cable (power supply and limit switch) „ Defect of air flow direction adjusting flap-cam „...

  • Page 182: Indoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (Y1E)

    PACD011001C2 Troubleshooting Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E) A9 A9 A9 A9 Remote Controller Display „ Malfunction of moving part of electronic expansion valve Supposed Causes „ Defect of indoor unit PC board „ Defect of connecting cable Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 183: Indoor Unit: Drain Level Above Limit

    Troubleshooting PACD011001C2 Indoor Unit: Drain Level above Limit AF AF AF AF Remote Controller Display „ Humidifier unit (optional accessory) leaking Supposed Causes „ Defect of drain pipe (upward slope, etc.) „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 184: Indoor Unit: Malfunction Of Capacity Determination Device

    PACD011001C2 Troubleshooting Indoor Unit: Malfunction of Capacity Determination Device AJ AJ AJ AJ Remote controller display „ You have forgotten to install the capacity setting adaptor. Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 185: Indoor Unit: Malfunction Of Thermistor (R2T) For Liquid Pipe

    Troubleshooting PACD011001C2 Indoor Unit: Malfunction of Thermistor (R2T) for Liquid Pipe C4 C4 C4 C4 Remote Controller Display „ Defect of thermistor (R2T) for liquid pipe Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 186: Indoor Unit: Malfunction Of Thermistor (R3T) For Gas Pipes

    PACD011001C2 Troubleshooting 3.10 Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes C5 C5 C5 C5 Remote Controller Display „ Defect of indoor unit thermistor (R3T) for gas pipe Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 187: Indoor Unit: Malfunction Of Thermistor (R1T) For Air Inlet

    Troubleshooting PACD011001C2 3.11 Indoor Unit: Malfunction of Thermistor (R1T) for Air Inlet C9 C9 C9 C9 Remote Controller Display „ Defect of indoor unit thermistor (R1T) for air inlet Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 188: In Remote Controller

    PACD011001C2 Troubleshooting 3.12 Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller Remote Controller Display „ Defect of remote controller thermistor Supposed Causes „ Defect of remote controller PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 189: Outdoor Unit: Actuation Of Safety Device

    Troubleshooting PACD011001C2 3.13 Outdoor Unit: Actuation of Safety Device E0 E0 E0 E0 Remote Controller Display „ Actuation of outdoor unit safety device Supposed Causes „ Defect of outdoor unit PC board „ Instantaneous power failure Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 190: Outdoor Unit: Pc Board Defect

    PACD011001C2 Troubleshooting 3.14 Outdoor Unit: PC Board Defect E1 E1 E1 E1 Remote Controller Display „ Defect of outdoor unit PC board (A1P) Supposed Causes Troubleshooting Replace outdoor unit PC board A1P. Troubleshooting Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 191: Outdoor Unit: Actuation Of High Pressure Switch

    Troubleshooting PACD011001C2 3.15 Outdoor Unit: Actuation of High Pressure Switch E3 E3 E3 E3 Remote Controller Display „ Actuation of outdoor unit high pressure switch Supposed Causes „ Defect of outdoor unit PC board (A1P) „ Instantaneous power failure Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 192: Outdoor Unit: Actuation Of Low Pressure Switch

    PACD011001C2 Troubleshooting 3.16 Outdoor Unit: Actuation of Low Pressure Switch E4 E4 E4 E4 Remote Controller Display „ Abnormal drop of low pressure (0 kg/cm² [0 MPa]) Supposed Causes „ Defect of low pressure sensor „ Defect of outdoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 193: Outdoor Unit: Malfunction Of Moving Part Of

    Troubleshooting PACD011001C2 3.17 Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E) E9 E9 E9 E9 Remote Controller Display „ Defect of moving part of electronic expansion valve Supposed Causes „ Defect of outdoor unit PC board (A1P) „...

  • Page 194: Outdoor Unit: Abnormal Discharge Pipe Temperature

    PACD011001C2 Troubleshooting 3.18 Outdoor Unit: Abnormal Discharge Pipe Temperature F3 F3 F3 F3 Remote Controller Display „ Abnormal discharge pipe temperature Supposed Causes „ Defect of discharge pipe thermistor (CU-5 : R3T CU-8·10 : R3-1T, R3-2T) „ Defect of outdoor unit PC board „...

  • Page 195: Outdoor Unit: Malfunction Of Thermistor (R1T) For Outdoor Air

    Troubleshooting PACD011001C2 3.19 Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air H9 H9 H9 H9 Remote Controller Display „ Defect of thermistor (R1T) for outdoor unit outdoor air intake Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 196: Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R3T)

    PACD011001C2 Troubleshooting 3.20 Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3T) J3 J3 J3 J3 Remote Controller Display „ Defect of thermistor (CU-5 : R3T, CU-8·10 : R3-1T, R3-2T) for outdoor unit discharge pipe Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 197: Outdoor Unit: Malfunction Of Thermistor (R4T) For Suction Pipe

    Troubleshooting PACD011001C2 3.21 Outdoor Unit: Malfunction of Thermistor (R4T) for Suction Pipe J5 J5 J5 J5 Remote Controller Display „ Defect of thermistor (R4T or R4-1T, R4-2T) for outdoor unit suction pipe Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 198: Outdoor Unit: Malfunction Of Thermistor (R2T) For Heat Exchanger

    PACD011001C2 Troubleshooting 3.22 Outdoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger J6 J6 J6 J6 Remote Controller Display „ Defect of thermistor (R2T or R2-1T, R2-2T) for outdoor unit coil Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 199: Outdoor Unit: Malfunction Of Discharge Pipe Pressure Sensor

    Troubleshooting PACD011001C2 3.23 Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor JA JA JA JA Remote Controller Display „ Defect of high pressure sensor system Supposed Causes „ Connection of low pressure sensor with wrong connection. „ Defect of outdoor unit PC board. Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 200: Outdoor Unit: Malfunction Of Suction Pipe Pressure Sensor

    PACD011001C2 Troubleshooting 3.24 Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor JC JC JC JC Remote Controller Display „ Defect of low pressure sensor system Supposed Causes „ Connection of high pressure sensor with wrong connection. „ Defect of outdoor unit PC board. Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 201: Outdoor Unit: Malfunction Of Oil Temperature Thermistor (R5T)

    Troubleshooting PACD011001C2 3.25 Outdoor Unit: Malfunction of Oil Temperature Thermistor (R5T) JH JH JH JH Remote Controller Display „ Defect of oil temperature thermistor (R5T) Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 202: Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure

    PACD011001C2 Troubleshooting 3.26 Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure U0 U0 U0 U0 Remote Controller Display „ Refrigerant shortage or refrigerant system clogging (incorrect piping) Supposed Causes „ Defect of pressure sensor „ Defect of outdoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 203: Negative Phase, Open Phase

    Troubleshooting PACD011001C2 3.27 Negative Phase, Open Phase U1 U1 U1 U1 Remote Controller Display „ Power supply negative phase Supposed Causes „ Power supply open phase „ Defect of outdoor PC board A1P Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 204: Malfunction Of Transmission Between Indoor Units

    PACD011001C2 Troubleshooting 3.28 Malfunction of Transmission between Indoor Units U4 U4 U4 U4 Remote Controller Display „ Indoor to outdoor, outdoor to outdoor crossover wiring, disconnection or short circuit Supposed Causes „ Outdoor unit power supply is OFF „ System address doesn’t match „...

  • Page 205: Malfunction Of Transmission Between Remote Controller And Indoor Unit

    Troubleshooting PACD011001C2 3.29 Malfunction of Transmission between Remote Controller and Indoor Unit U5 U5 U5 U5 Remote Controller Display „ Malfunction of indoor unit remote controller transmission Supposed Causes „ Connection of two main remote controllers (when using 2 remote controllers) „...

  • Page 206: Malfunction Of Transmission Between Outdoor Units

    PACD011001C2 Troubleshooting 3.30 Malfunction of Transmission between Outdoor Units U7 U7 U7 U7 Remote Controller Display „ Improper connection of transmission wiring between outdoor unit and BMS interface adaptor for Supposed Causes outdoor unit „ Improper cool/heat selection „ Improper cool/heat unified address (outdoor unit, BMS interface adaptor for outdoor unit) „...

  • Page 207: Malfunction Of Transmission Between Master And Slave Remote Controllers

    Troubleshooting PACD011001C2 3.31 Malfunction of Transmission between Master and Slave Remote Controllers U8 U8 U8 U8 Remote Controller Display „ Malfunction of transmission between master and slave remote controller Supposed Causes „ Connection between sub remote controllers „ Defect of remote controller PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 208: Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System

    PACD011001C2 Troubleshooting 3.32 Malfunction of Transmission between Indoor and Outdoor Units in the Same System U9 U9 U9 U9 Remote Controller Display „ Malfunction of transmission between indoor and outdoor of other system Supposed Causes „ Malfunction of electronic expansion valve in indoor unit of other system „...

  • Page 209: Excessive Number Of Indoor Units

    Troubleshooting PACD011001C2 3.33 Excessive Number of Indoor Units UA UA UA UA Remote Controller Display „ Excess of connected indoor units Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 210: Address Duplication Of Central Remote Controller

    PACD011001C2 Troubleshooting 3.34 Address Duplication of Central Remote Controller UC UC UC UC Remote Controller Display „ Address duplication of central remote controller Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 211: Refrigerant System Not Set, Incompatible Wiring/Piping

    Troubleshooting PACD011001C2 3.35 Refrigerant System not set, Incompatible Wiring/Piping UF UF UF UF Remote Controller Display „ Improper connection of transmission wiring between indoor-outdoor unit and outdoor-outdoor unit Supposed Causes „ Failure to execute wiring check operation „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 212: Malfunction Of System, Refrigerant System Address Undefined

    PACD011001C2 Troubleshooting 3.36 Malfunction of System, Refrigerant System Address Undefined UH UH UH UH Remote Controller Display „ Improper connection of transmission wiring between indoor-outdoor unit and outdoor-outdoor unit Supposed Causes „ Defect of indoor unit PC board „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 213: Failure Diagnosis For Inverter System

    Failure Diagnosis for Inverter System PACD011001C2 Failure Diagnosis for Inverter System Points of Diagnosis The main causes for each malfunction code are given in the table below. (For details refer to the next page and those following.) • : Failure is probable { : Failure is possible …...

  • Page 214: How To Use The Monitor Switch On The Inverter Pc Board

    PACD011001C2 Failure Diagnosis for Inverter System How to use the Monitor Switch on the Inverter PC Board The monitor lets you know the contents of the latest stop due to malfunction by LED display on the inverter PC Board. The inverter is equipped with a retry function that retries operation each time stop due to malfunction occurs, and malfunction is therefore not ascertained by merely entering the five minutes standby while retry is attempted the prescribed number of times.

  • Page 215: Troubleshooting (Inverter)

    Troubleshooting (Inverter) PACD011001C2 5. Troubleshooting (Inverter) Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise L4 L4 L4 L4 Remote Controller Display „ Actuation of fin thermal (Actuates at min. 90°C and resets at max. 80°C) Supposed Causes „ Defect of inverter PC board „...

  • Page 216: Outdoor Unit: Inverter Instantaneous Over-Current

    PACD011001C2 Troubleshooting (Inverter) Outdoor Unit: Inverter Instantaneous Over-Current L5 L5 L5 L5 Remote Controller Display „ Defect of compressor coil (disconnected, defective insulation) Supposed Causes „ Compressor start-up malfunction (mechanical lock) „ Defect of inverter unit Troubleshooting Compressor inspection Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 217: Outdoor Unit: Inverter Thermostat Sensor, Compressor Overload

    Troubleshooting (Inverter) PACD011001C2 Outdoor Unit: Inverter Thermostat Sensor, Compressor Overload L8 L8 L8 L8 Remote Controller Display „ Compressor overload Supposed Causes „ Compressor coil disconnected „ Defect of inverter unit Troubleshooting Output current check Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 218: Outdoor Unit: Inverter Stall Prevention, Compressor Lock

    PACD011001C2 Troubleshooting (Inverter) Outdoor Unit: Inverter Stall Prevention, Compressor Lock L9 L9 L9 L9 Remote Controller Display „ Defect of compressor Supposed Causes „ Pressure differential start „ Defect of inverter unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 219: Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board

    Troubleshooting (Inverter) PACD011001C2 Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board LC LC LC LC Remote Controller Display „ Malfunction of connection between the inverter unit and outdoor unit PC board Supposed Causes „ Defect of outdoor unit PC board (transmission section) „...

  • Page 220: Power Supply Insufficient Or Instantaneous Failure

    PACD011001C2 Troubleshooting (Inverter) Power Supply Insufficient or Instantaneous Failure Remote Controller Display „ Power supply insufficient Supposed Causes „ Instantaneous failure „ Open phase „ Defect of inverter unit „ Defect of outdoor PC board „ Defect of K1M. „ Main circuit wiring defect Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 221: Outdoor Unit: Inverter Over-Ripple Protection

    Troubleshooting (Inverter) PACD011001C2 Outdoor Unit: Inverter Over-Ripple Protection P1 P1 P1 P1 Remote Controller Display „ Open phase Supposed Causes „ Voltage imbalance between phases „ Defect of main circuit capacitor „ Defect of inverter unit „ Defect of K1M „...

  • Page 222: Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise Sensor

    PACD011001C2 Troubleshooting (Inverter) Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor P4 P4 P4 P4 Remote Controller Display „ Defect of radiator fin temperature sensor Supposed Causes „ Defect of inverter unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 223: Troubleshooting (Op: Central Remote Controller)

    Troubleshooting (OP: Central Remote Controller) PACD011001C2 6. Troubleshooting (OP: Central Remote Controller) Malfunction of Transmission between Central Remote Controller and Indoor Unit UE UE UE UE Remote Controller Display „ Malfunction of transmission between optional controllers for centralised control and indoor unit Supposed Causes „...

  • Page 224: Pc Board Defect

    PACD011001C2 Troubleshooting (OP: Central Remote Controller) PC Board Defect M1 M1 M1 M1 Remote Controller Display „ Defect of central remote controller PC board Supposed Causes Troubleshooting Replace the central remote controller PC board. Troubleshooting Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 225: Malfunction Of Transmission Between Optional Controllers For Centralised Control

    Troubleshooting (OP: Central Remote Controller) PACD011001C2 Malfunction of Transmission between Optional Controllers for Centralised Control M8 M8 M8 M8 Remote Controller Display „ Malfunction of transmission between optional controllers for centralised control Supposed Causes „ Defect of PC board of optional controllers for centralised control Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 226: Improper Combination Of Optional Controllers For Centralised Control

    PACD011001C2 Troubleshooting (OP: Central Remote Controller) Improper Combination of Optional Controllers for Centralised Control MA MA MA MA Remote Controller Display „ Improper combination of optional controllers for centralised control Supposed Causes „ More than one master controller is connected „...

  • Page 227: Address Duplication, Improper Setting

    Troubleshooting (OP: Central Remote Controller) PACD011001C2 Address Duplication, Improper Setting MC MC MC MC Remote Controller Display „ Address duplication of central remote controller Supposed Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 228: Troubleshooting (Op: Schedule Timer)

    PACD011001C2 Troubleshooting (OP: Schedule Timer) 7. Troubleshooting (OP: Schedule Timer) Malfunction of Transmission between Central Remote Controller and Indoor Unit UE UE UE UE Remote Controller Display „ Malfunction of transmission between central remote controller and indoor unit Supposed Causes „...

  • Page 229: Pc Board Defect

    Troubleshooting (OP: Schedule Timer) PACD011001C2 PC Board Defect M1 M1 M1 M1 Remote Controller Display „ Defect of schedule timer PC board Supposed Causes Troubleshooting Replace the schedule timer PC board. Troubleshooting Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 230: Malfunction Of Transmission Between Optional Controllers For Centralised Control

    PACD011001C2 Troubleshooting (OP: Schedule Timer) Malfunction of Transmission between Optional Controllers for Centralised Control M8 M8 M8 M8 Remote Controller Display „ Malfunction of transmission between optional controllers for centralised control Supposed Causes „ Defect of PC board of optional controllers for centralised control Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 231: Improper Combination Of Optional Controllers For Centralised Control

    Troubleshooting (OP: Schedule Timer) PACD011001C2 Improper Combination of Optional Controllers for Centralised Control MA MA MA MA Remote Controller Display „ Improper combination of optional controllers for centralised control Supposed Causes „ More than one master controller is connected. „ Defect of PC board of optional controllers for centralised control Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 232: Address Duplication, Improper Setting

    PACD011001C2 Troubleshooting (OP: Schedule Timer) Address Duplication, Improper Setting MC MC MC MC Remote Controller Display „ Address duplication of optional controllers for centralised control Supposed Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 233: Troubleshooting (Op: Unified On/Off Controller)

    Troubleshooting (OP: Unified ON/OFF Controller) PACD011001C2 8. Troubleshooting (OP: Unified ON/OFF Controller) Operation Lamp Blinks Remote Controller Operation lamp blinks Display „ Malfunction of transmission between optional controller and indoor unit Suppposed Causes „ Connector for setting master controller is disconnected „...

  • Page 234: Display "Under Host Computer Integrate Control" Blinks (Repeats Single Blink)

    PACD011001C2 Troubleshooting (OP: Unified ON/OFF Controller) Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink) Remote Controller “under host computer integrated control” (Repeats single blink) Display „ Address duplication of central remote controller Supposed Causes „ Improper combination of optional controllers for centralised control „...
  • Page 235 Troubleshooting (OP: Unified ON/OFF Controller) PACD011001C2 Cannot be used in combination Is the "BMS with a "BMS interface adaptor for interface adaptor for individual and unified control, for individual and unified control, unified group". Remove them and for unified group" reset the power supply for all connected? optional controllers for centralised...

  • Page 236: Display "Under Host Computer Integrate Control" Blinks (Repeats Double Blink)

    PACD011001C2 Troubleshooting (OP: Unified ON/OFF Controller) Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) Remote Controller “under host computer integrated control” (Repeats double blink) Display „ Central control address (group No.) is not set for indoor unit. Supposed Causes „...
  • Page 237 Troubleshooting (OP: Unified ON/OFF Controller) PACD011001C2 Troubleshooting Urban Multi “MX1, ME1 Series” Using R-22...

  • Page 238: 80#6Hulhv#8Vlqj#5073

    PACD011001C2 80#6HULHV#8VLQJ#5073:&# 80#6HULHV#8VLQJ#5073:&# 80#6HULHV#8VLQJ#5073:&# 80#6HULHV#8VLQJ#5073:&# 0;45#6HULHV 0;45#6HULHV 0;45#6HULHV 0;45#6HULHV ,QYHUWHU ,QYHUWHU ,QYHUWHU ,QYHUWHU +HDW#5HFRYHU\ +HDW#5HFRYHU\ 0(45#6HULHV 0(45#6HULHV +HDW#5HFRYHU\ +HDW#5HFRYHU\ 0(45#6HULHV 0(45#6HULHV Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 239 PACD011001C2 Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 240 PACD011001C2 3DUW#4 3DUW#4 3DUW#4 3DUW#4 *HQHUDO#,QIRUPDWLRQ *HQHUDO#,QIRUPDWLRQ *HQHUDO#,QIRUPDWLRQ *HQHUDO#,QIRUPDWLRQ 1. Introduction ..................220 1.1 Introduction of the Series ..............220 2. Outline....................221 2.1 MX1R Series ..................221 ME1R Series (Heat Recovery) .............222 Allowed Range of Indoor Unit and HR Box Connection .......223 General Information Urban Multi “MX1R, ME1R Series” Using R-407C...

  • Page 241: Introduction

    Introduction PACD011001C2 1. Introduction Introduction of the Series Incorporating advanced inverter and multi-unit technologies, UM Series air conditioning systems for buildings allow individual control of indoor units for added versatility. „ Long refrigerant piping: equivalent length of 125 m, actual length of 100 m, and height difference of 50 m.

  • Page 242: Outline

    PACD011001C2 Outline 2. Outline MX1R Series UM Inverter "MX1R Series" Outdoor unit *Piping run from three directions. *Equipped with automatic indoor / outdoor unit wiring and piping check function. Indoor unit *Wide selection including 10 types and 61 models. *Up to 16 units can be connected to a single system.

  • Page 243: Me1R Series (Heat Recovery)

    Outline PACD011001C2 ME1R Series (Heat Recovery) „ Allows individual control of different types of indoor units with varying capacities totaling 50 to 130% of the outdoor unit capacity. ∗ When total indoor capacity exceeds 100%, indoor unit operating capacity may decrease slightly if all indoor units are operated at the same time.

  • Page 244: Allowed Range Of Indoor Unit And Hr Box Connection

    PACD011001C2 Outline Allowed Range of Indoor Unit and HR Box Connection Range A Range B HR box Range C Range C Range C Range C Indoor unit ( Cooling ( Cooling only unit ) only unit ) (M005) „ Arrange systems to conform below conditions referring to above diagram. Range Item Model of outdoor...
  • Page 245 Outline PACD011001C2 General Information Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 246 PACD011001C2 3DUW5 3DUW5 3DUW5 3DUW5 )XQFWLRQ )XQFWLRQ )XQFWLRQ )XQFWLRQ 1. Function ....................226 1.1 Outdoor Unit Refrigerant System Diagram...........226 1.2 List of Safety Devices and Functional Parts Setting Values....234 1.3 Flow of Refrigerant in Each Operation Mode (ME1R Series)....236 1.4 Outline of Control (ME1R Series)............241 1.5 Safety for Restart .................243 1.6 Equalized Oil Level Operation (Equalized Oil Level between Twin Compressors).......245...

  • Page 247: Function

    Function PACD011001C2 Function Outdoor Unit Refrigerant System Diagram 1.1.1 CU - 5MX1SPP Filter Filter Electronic expansion valve Solenoid valve Heat exchanger 4-way changeover valve Solenoid valve Capillary tube Filter Capillary tube Capillary tube Pressure sensor (High pressure) High pressure switch Comp- ressor Pressure sensor...
  • Page 248 PACD011001C2 Function A. Compressor M1C Scroll compressor that operates on 30 ~ 116Hz by inverter drive enables 13-step capacity control. Capacity control is carried out for individual and linear control of indoor units. B. Oil separator The oil separator is a device that collects the oil discharged from the compressor. The collected oil is constantly recycled to the compressor via capillary tube.
  • Page 249 Function PACD011001C2 1.1.2 CU-8·10MX1SPP Filter Electronic Filter expansion valve Solenoid Solenoid valve valve Heat exchanger 4-way changeover valve Capillary tube Capillary tube Pressure sensor (High pressure) Solenoid valve Capillary tube High pressure switch High pressure switch Capillary tube Inverter Standard comp- comp- ressor...
  • Page 250 PACD011001C2 Function A. Compressor M1C / M2C Connecting a scroll compressor (inverter compressor) that operates on 30 ~ 116Hz by inverter drive and a scroll compressor (standard compressor) that runs on a commercial power supply to the same refrigerant system enables 21-step capacity control. Capacity control is carried out for individual and linear control of indoor units.
  • Page 251 Function PACD011001C2 1.1.3 CU-8·10 ME1XPK (Heat Recovery) 4D018352 Function Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 252 PACD011001C2 Function A. Compressor The 20-step capacity control is achieved by the inverter scroll compressor that uses an inverter for frequency control in a range of 32 to 116 Hz and the standard scroll compressor that uses commercial power supply. The compressors allow individual control of indoor units and linear control. (M1C : inverter compressor, M2C : standard compressor) B.
  • Page 253 Function PACD011001C2 1.1.4 HR box CZ-100HR1HP A. Solenoid valve (suction side) Y2S This solenoid valve turns ON when normal cooling operation and discharge/suction oil return operation. (Connect indoor unit gas pipe and outdoor unit suction pipe.) B. Solenoid valve (discharge side) Y3S Turn ON this valve to operate of discharge oil return when indoor unit is set for heating.
  • Page 254 PACD011001C2 Function 1.1.5 Function of Thermistors and Pressure Sensors Outdoor unit CU-8·10MX1SPP Filter Electronic Filter expansion valve High pressure sensor (SENPH) Solenoid Solenoid When heating: valve valve Heat exchanger Used for compressor capacity control by sensing 4-way changeover valve high pressure. Pressure When cooling: Capillary...

  • Page 255: List Of Safety Devices And Functional Parts Setting Values

    Function PACD011001C2 List of Safety Devices and Functional Parts Setting Values 1.2.1 CU-5·8·10MX1SPP Item Symbol Name Type CU-5MX1SPP CU-8MX1SPP CU-10MX1SPP Comp- Inverter side JT100BEVYE 3.5 kW JT100BEVTYE 3.5 kW JT100BEVTYE 3.5 kW ressor Model Output Standard side — JT100BETYE 2.2 kW JT160BETYE 3.75 kW Compressor safety Discharge pipe thermistor 135°C OFF...
  • Page 256 PACD011001C2 Function 1.2.2 CU-8·10 ME1XPK Item Symbol Name Type CU-8ME1XPK CU-10ME1XPK Comp- Inverter 3φ, JT100BAVTYE 3.5 kW JT100BAVTYE 3.5 kW 380~ ressor side Model 415V JT100BATYE 2.2 kW JT160BATYE 3.75kW Output Compressor safety Discharge pipe thermistor 135°C OFF thermostat J1HC/ Crank case heater 33W+33W J2HC...

  • Page 257: Flow Of Refrigerant In Each Operation Mode (Me1R Series)

    Function PACD011001C2 Flow of Refrigerant in Each Operation Mode (ME1R Series) 1.3.1 Cooling (M070) Function Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 258 PACD011001C2 Function 1.3.2 Heating (M009) Function Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 259 Function PACD011001C2 1.3.3 Simultaneous Cooling and Heating (M010) Function Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 260 PACD011001C2 Function 1.3.4 Discharge Oil Return, Defrost (M011) Function Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 261 Function PACD011001C2 1.3.5 Suction Oil, Defrost (M012) Function Urban Multi “MX1R, ME1R Series” Using R-407C...

  • Page 262: Outline Of Control (Me1R Series)

    PACD011001C2 Function Outline of Control (ME1R Series) 1.4.1 Inverter Compressor, Motorized PI Control 1. Compressor PI control „ Cooling operation Controls TeS (target Te value) at constant ··· Constant-level control of Te (low pressure equivalent saturation temperature) TeS = 7.5°C „...
  • Page 263 Function PACD011001C2 Heat exchanger mode Heat exchanger 1 Heat exchanger 2 EV mode Cooling operation COND COND H + ON COND COND L + ON ↑  COND COND H + OFF   COND COND L + OFF  COND EVAP H + ON...

  • Page 264: Safety For Restart

    PACD011001C2 Function Safety for Restart 1.5.1 Restart Safety Timer The compressor will not run for five minutes by making forced thermostat OFF condition in order to prevent it from being turned on and off in rapid succession, and to equalize pressure in the refrigerant circuit. It however restarts automatically after five minutes passes if it is in thermostat ON condition.
  • Page 265 Function PACD011001C2 1.5.3 Pump Down Start (CU-8·10 only) If the compressor stops running with refrigerant still remaining in the accumulator, in order to prevent wet operation at the next compressor starting, it will perform pump down start with a completely dry accumulator, then it will operate normally.

  • Page 266: Equalized Oil Level Operation (Equalized Oil Level Between Twin Compressors)

    PACD011001C2 Function Equalized Oil Level Operation (Equalized Oil Level between Twin Compressors) If using two compressors (8, 10Hp) connected in parallel, oil level equalizing is carried out for 5 minutes if the cumulative running time of the standard compressor exceeds 2 hours in order to prevent lack of oil cause by difference in pressure inside the dome due to drift, and then reverts to normal operation.

  • Page 267: Oil Return Operation

    Function PACD011001C2 Oil Return Operation 1.7.1 MX1R Series In order to collect refrigeration oil held up in connecting piping, the compressor's operating time is counted, and oil return operation is carried out for 4 minutes every 8 hours (2 hour after turning on the power supply, and every 8 hours after that).
  • Page 268 PACD011001C2 Function 1.7.2 ME1R Series In order to collect refrigeration oil held up in connecting piping, the compressor’s operating time is counted, and oil return operation is carried out for 8 minutes 30 seconds every 8 hours (2 hour after turning on the power supply, and every 8 hours after that).

  • Page 269: Defrost

    Function PACD011001C2 Defrost 1.8.1 MX1R Series „ Function Defrost operation is carried out if the relation of the outdoor unit's coil temperature (Tcoil) and outdoor temperature (Tair) satisfies the conditions given below for 5 minutes continuously. • Tcoil Tcoil≤C · Tair- Temperature detected by R2T •...
  • Page 270 PACD011001C2 Function 1.8.2 ME1R Series Melts frost which might collect on outdoor heat exchangers during heating in order to recover their heat transfer performance. Conditions for executing defrost At least 20 minutes have elapsed since completion of oil return or since compressor starts. High pressure <...
  • Page 271 Function PACD011001C2 Operation Contents Step 1 → Discharge defrost k = kg/cm² Compressor 86Hz + OFF 1 Minute Elapses 2000pls Preparation for Defrost Outdoor Unit Fan OFF + OFF Outdoor Unit Heat Exchanger Condenser Upper Limit Frequency Limited to 38Hz + ON 4 Way Valve (VF015) Injection 1...

  • Page 272: Pressure Equalization Control (Me1R Series)

    PACD011001C2 Function Pressure Equalization Control (ME1R Series) The discharge gas and suction gas pipes are bypassed to eliminate differential pressure between the inlet and outlet of the solenoid valve during HR boxes solenoid switching operations. „ Equalizing operation demand → Pressure equalization solenoid valve (Y1S) is ON at following conditions.

  • Page 273: Frequency Limit Control By Pressure Equalization (Me1R Series)

    Function PACD011001C2 1.10 Frequency Limit Control by Pressure Equalization (ME1R Series) The compressor operating capacity is limited to prevent abnormal noise caused by the equalizing operation. Operating conditions Equalizing operation demand issued & Not in cooling operation only During the first 30 seconds, the following operations are conducted. INV outdoor unit Compressor operating capacity 54Hz + OFF...

  • Page 274: Changeover Control (Me1R Series)

    PACD011001C2 Function 1.11 HR Changeover Control (ME1R Series) The solenoid valve of the HR box is switched according to the indoor unit operating condition. Normal operation Oil return, defrost Oil return, defrost Discharge defrost Condition 1 Condition 3 Cooling Discharge oil return Oil return, defrost complete Suction defrost Condition 2...

  • Page 275: Pump Down Residual Operation

    Function PACD011001C2 1.12 Pump Down Residual Operation If refrigerant is remaining in the accumulator when the compressor starts, liquid refrigerant is sucked into the compressor, diluting the refrigerant machine oil and reducing the lubricating performance. To prevent this, the pump-down operation discharges refrigerant from the low pressure side when the unit is not in operation.

  • Page 276: Step Down / Safety Control → Standby (Forced Thermostat Off) → Stop Due To Malfunction

    PACD011001C2 Function → → 1.13 Step Down / Safety Control Standby (Forced Thermostat OFF) Stop Due to Malfunction 1.13.1 MX1R Series High Pressure (Hp) Control (Cooling) Hp≥26.0kg/cm² Hp≥26.3kg/cm² (2.54MPa) (2.577MPa) Frequency 8, 10HP(5HP) 76Hz+OFF(48Hz) 1 STEP DOWN Hp>28.7kg/cm² Hp>31.5kg/cm² (2.812MPa) (3.087MPa) (Heating) Forced OFF...
  • Page 277 Function PACD011001C2 Control According If the outdoor temperature exceeds 27°C when heating, forced thermostat OFF is carried out in order to to Outdoor prevent a safety device from being tripped or a sensor malfunction. Temperature 1.13.2 ME1R Series High Pressure (Hp) Control Hp≥23.8kg/cm²...
  • Page 278 PACD011001C2 Function Discharge Super (DSH = Td - high pressure condensation saturation temperature) Heating (DSH) During both the inverter and standard compressors are running, when the injection valve for either one Control goes OFF and discharge super heating (DSH) continues for 10 minutes at temperature difference of less than 10°C, the inverter+standard compressor are controlled at 76 Hz or less+OFF for 3 minutes.

  • Page 279: Control During Low Outdoor Air Temperature Cooling

    Function PACD011001C2 1.14 Control During Low Outdoor Air Temperature Cooling When the outdoor air temperature is low in cooling operation, outdoor unit fans, electronic expansion valve and compressors are controlled as follows in order to primarily maintain high pressure and to protect drop in refrigerant circulation caused by drop in high pressure.
  • Page 280 PACD011001C2 Function Low Outdoor Air Cooling in Conditions satisfied • Compressor off Conditions (Step 2) Normal operation • Other than cooling (includes oil return) • High pressure > 17.3 kg/cm² (1.690 MPa) • Cooling with compressor running • Radiator fin temperature > 87˚C (doesn't include oil return) &...

  • Page 281: Low Noise Control

    Function PACD011001C2 1.15 Low Noise Control If sound produced by outdoor units is a problem at night, etc., you can reduce the running noise by 2 to 3 dB by running the outdoor unit fans and compressors at low speed via contact input (low noise input) from outside.

  • Page 282: Demand Control

    PACD011001C2 Function 1.16 Demand Control When you like to save the power consumption, there are three modes of demand operation which controls forced capacity save for outdoor units via contact input (demand input) from outside in order to control demand. Demand 1: Holds electric power consumption down to approx.

  • Page 283: Compressor Capacity Control

    Function PACD011001C2 1.17 Compressor Capacity Control CU-5 Pressure is sampled every 20 seconds by pressure sensor, and the inverter compressor is controlled in 13 stages by microcomputer. Frequency range: 34 - 116 Hz (13 stages) and common for 50/60Hz area. Min.

  • Page 284: Te / Tc Setting

    PACD011001C2 Function 1.18 Te / Tc Setting You can alter the value of targets Te (evaporating pressure equivalent temperature) and Tc (condensing pressure equivalent temperature) with setting mode 2. PI control is used to control compressor capacity so that Te when cooling and Tc when heating are constant. Te setting Set temperature High...

  • Page 285: Gas Depletion Alarm

    Function PACD011001C2 1.19 Gas Depletion Alarm An alarm (U0) is given for severe gas depletion. Alarm is indicated but operation continues. When Cooling Gas depletion alarm (U0) is displayed. While compressor is running Conditions given on the left continue for 30 min. Low pressure <...

  • Page 286: Drain Pump Control

    PACD011001C2 Function 1.20 Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below). 1.20.1 When the Float Switch is Tripped While the Cooling Thermostat is ON: ∗ 1.The objective of residual operation is to completely drain any moisture adhering to the fin of the indoor unit heat exchanger when the thermostat goes off during cooling operation.
  • Page 287 Function PACD011001C2 1.20.3 When the Float Switch is Tripped During Heating Operation: During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset. 1.20.4 When the Float Switch is Tripped and “AF”...

  • Page 288: Oil Temperature Sensor (8 And 10 Hp Only)

    PACD011001C2 Function 1.21 Oil Temperature Sensor (8 and 10 Hp only) 1.21.1 Prevention of Wetness during Heating ‹ Wet operation is prevented by modification of super heating (SH) by oil temperature sensor (R5T). (Low equivalent pressure = Te) R5T ≤ Te+10˚C SH=10˚C SH=5˚C R5T >...

  • Page 289: Louver Control For Preventing Ceiling Dirt

    Function PACD011001C2 1.22 Louver Control for Preventing Ceiling Dirt We have added a control feature that allows you to select the range of in which air direction can be adjusted in order to prevent the ceiling surrounding the air discharge outlet of ceiling mounted cassette type units from being soiled.

  • Page 290: Thermostat Sensor In Remote Controller

    PACD011001C2 Function 1.23 Thermostat Sensor in Remote Controller Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use”.) Cooling If there is a significant difference in the preset temperature and the suction temperature, fine adjustment...
  • Page 291 Function PACD011001C2 Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset temperature.

  • Page 292: Freeze Prevention

    PACD011001C2 Function 1.24 Freeze Prevention Freeze Prevention When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit heat by Off Cycle exchanger drops too low, the unit enters freeze prevention operation in accordance with the following (Indoor Unit) conditions, and is also set in accordance with the conditions given below.
  • Page 293 Function PACD011001C2 Function Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 294 PACD011001C2 3DUW#6 3DUW#6 3DUW#6 3DUW#6 7HVW#2SHUDWLRQ 7HVW#2SHUDWLRQ 7HVW#2SHUDWLRQ 7HVW#2SHUDWLRQ 1. Test Operation ..................274 1.1 Procedure and Outline .................274 1.2 When Power is Turned On ..............276 1.3 Outdoor Unit PC Board Ass’y...............277 1.4 Setting Modes (MX1R Series)..............281 1.5 Setting Modes (ME1R Series)..............288 1.6 Sequential Start..................294 1.7 BMS Interface Adaptor for Outdoor Unit (MX1R Series)......295 1.8 BMS Interface Adaptor for Outdoor Unit (ME1R Series)......298...

  • Page 295: Test Operation

    Test Operation PACD011001C2 Test Operation Procedure and Outline The operation sequence is the most important thing for test operation. Follow the following outline. 1.1.1 Check The Following Before Turning Power On. Mistaken power wiring, loose screws Mistaken control transmission wiring, loose screws Piping size, presence of thermal insulation Measurement of main power circuit insulation Use a 500V megar-tester.
  • Page 296 PACD011001C2 Test Operation 1.1.3 Check Operation. Carry out wiring check operation, For wiring check operation procedure, see wiring and check wiring and piping connections. check operation. Set the operation mode to ”cool.“ Even if it's the heating season, set to cooling mode in order to prevent liquid from backing Set to the test operation mode To enter the test operation mode, push the...

  • Page 297: When Power Is Turned On

    Test Operation PACD011001C2 When Power is Turned On 1.2.1 When Turning Power on the First Time The unit will not run for up to 12 minutes in order for master power supply and address (indoor unit address, etc.) to be set automatically. Outdoor unit LED HWL (H2P) ....

  • Page 298: Outdoor Unit Pc Board Ass'y

    PACD011001C2 Test Operation Outdoor Unit PC Board Ass’y 1.3.1 CU-8·10MX1SPP Test Operation Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 299 Test Operation PACD011001C2 Service monitor <HAP> Normal ···············Flicker (Green) Malfunction ·······On or off Function setting switch or LED C/H SELECT SEQ. LED display : On MODE TEST L.N.O.P. START MASTER SLAVE : Flicker IN/D OUT/D : Off UNIT UNIT SELECT MODE RETURN WIRING CHECK...
  • Page 300 PACD011001C2 Test Operation 1.3.2 CU-8·10ME1XPK (Heat Recovery) Test Operation Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 301 Test Operation PACD011001C2 Service monitor <HAP> Normal ....Flicker (Green) Malfunction ..On or off Function setting switch or LED LED display : On : Flicker : Off Mode button ..Mode change Monitor mode Setting mode 1 Push 1 time. Push 1 time.

  • Page 302: Setting Modes (Mx1R Series)

    PACD011001C2 Test Operation Setting Modes (MX1R Series) The three setting modes are as follows: ‹ Setting mode 1 ..Mode for selecting cool/heat setting method, and whether or not to use low noise operation and sequential start. (H1P off) ‹ Setting mode 2 ..Mode for changing operating status and setting addresses; used primarily for service.
  • Page 303 Test Operation PACD011001C2 1.4.1 Setting Mode 1 The factory settings are: C/H SELECT SEQ. Individual (C/H SELECT), OFF (L.N.O.P.), ON (SEQ. START) MODE TEST L.N.O.P. START MASTER SLAVE You can change the low noise and sequential start settings by pushing the SET switch. To skip settings you don't want to change, push the RETURN switch and go to the next setting.
  • Page 304 PACD011001C2 Test Operation 1.4.2 Setting Mode 2 To enter setting mode 2 from setting mode 1 (normal), you must push and hold the MODE button (BS1) for 5 seconds. (Setting mode 2 cannot be entered while still making settings in setting mode 1.) Setting Procedure 1.
  • Page 305 Test Operation PACD011001C2 No Setting item Description LED display LED display LED display H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Emergency Emergency operation operation when malfunction Normal operation occurs Low noise /...
  • Page 306 PACD011001C2 Test Operation 1.4.3 Monitor Mode TEST C/H SELECT SEQ. MODE L.N.O.P. START MASTER SLAVE To enter the monitor mode, push the MODE button when in setting mode 1. MODE The lower 4 digits indicate the setting in each of the frames below.
  • Page 307 Test Operation PACD011001C2 Monitor Mode Data Mode No. Data Display Size (binary number) method {ýOýOýOýOýOý{ No 1 Cool/heat group address 0 ~ 31 Lower 6 digits {ýOýOýOýOý{ýO No 2 Low noise / demand address 0 ~ 31 Lower 6 digits {ýOýOýOýOý{ { No 3 Not used...
  • Page 308 PACD011001C2 Test Operation 1.4.4 Additional Refrigerant Charge Operation Procedure [Work procedure] 1. Conduct a normal refrigerant charge operation. With the outdoor unit stopped, charge refrigerant from the service port of the liquid-side stop valve. (Keep the liquid-side and gas-side stop valves open.) ∗...

  • Page 309: Setting Modes (Me1R Series)

    Test Operation PACD011001C2 Setting Modes (ME1R Series) The three setting modes are as follows: ‹ Setting mode 1 ..Mode for selecting cool/heat setting method, and whether or not to use low noise operation and sequential start. (H1P off) ‹ Setting mode 2 ..Mode for changing operating status and setting addresses; used primarily for service.
  • Page 310 PACD011001C2 Test Operation 1.5.1 Setting Mode 1 The factory settings are: C/H SELECT SEQ. Individual (C/H SELECT), OFF (L.N.O.P.), ON (SEQ. START) MODE TEST L.N.O.P. START MASTER SLAVE You can change the low noise and sequential start settings by pushing the SET switch. To skip settings you don't want to change, push the RETURN switch and go to the next setting.
  • Page 311 Test Operation PACD011001C2 1.5.2 Setting Mode 2 To enter setting mode 2 from setting mode 1 (normal), you must push and hold the MODE button (BS1) for 5 seconds. (Setting mode 2 cannot be entered while still making settings in setting mode 1.) Setting procedure 1.
  • Page 312 PACD011001C2 Test Operation No Setting item Description LED display LED display LED display H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Emergency Emergency operation operation when malfunction Normal operation occurs Low noise /...
  • Page 313 Test Operation PACD011001C2 1.5.3 Monitor Mode TEST C/H SELECT SEQ. MODE L.N.O.P. START MASTER SLAVE To enter the monitor mode, push the MODE button when in setting mode 1. MODE The lower 4 digits indicate the setting in each of the frames below.
  • Page 314 PACD011001C2 Test Operation Monitor Mode Data Mode No. Data Display Size (binary number) method {ýOýOýOýOý{ýO No 1 Low noise / demand address 0 ~ 31 Lower 6 digits {ýOýOýOýOý{ { No 2 Not used {ýOýOýOý{ýOýO No 3 Not used 0 ~ 63 Lower 6 digits {ýOýOýOý{ýOý{ No 4...

  • Page 315: Sequential Start

    Test Operation PACD011001C2 Sequential Start Separates the start timing for standard compressors by three seconds each in order to prevent over-current when several compressors are to be started simultaneously. Sequential start is possible for up to three units wired as a group to a single power supply. You should however connect an outdoor unit of small capacity as the third unit in the sequence.

  • Page 316: Bms Interface Adaptor For Outdoor Unit (Mx1R Series)

    PACD011001C2 Test Operation BMS Interface Adaptor for Outdoor Unit (MX1R Series) Purpose / BMS interface adaptor for outdoor unit is required in order for the UM “MX1R Series” to carry out the types Application of control given below. 1. Group switching of cool/heat mode for more than one outdoor unit system. The adaptor is required for cool/heat selection by indoor unit remote controller, by cool/heat selector, or by cool/heat central remote controller.
  • Page 317 Test Operation PACD011001C2 System Examples Group selection of cool/heat mode by indoor unit remote controller „ SS1 Switch Settings on the Adaptor PCB BOTH C / H BOTH C / H FUNCTION FUNCTION BOTH C / H (M038) „ SS2 CENTRAL C / H SELECTOR...
  • Page 318 PACD011001C2 Test Operation „ Group master unit Outdoor Unit PCB Settings SS1: “IN/D UNIT” Setting mode 1 C / H SELECT : “MASTER” Setting mode 2 Cool/heat group address: “0” Combines DS1 and DS2 of PC board adaptor. „ Group slave unit SS1: “IN/D UNIT”...

  • Page 319: Bms Interface Adaptor For Outdoor Unit (Me1R Series)

    Test Operation PACD011001C2 BMS Interface Adaptor for Outdoor Unit (ME1R Series) <Objective/use> By adding an BMS interface adaptor for outdoor unit to HR boxes or indoor units connected in a UM net, you can simultaneously select cool/heat mode for several outdoor units in the system, and it enables demand control and low noise control.
  • Page 320 PACD011001C2 Test Operation <Settings of switches on the PC board adaptor> „SS1 (“BOTH” is selected when demand control is carried out at the same time.) C / H BOTH C / H (SL302) „SS2 (SL303) „DS1·2 BMS interface adaptor for outdoor unit <Changeover by cool/heat central remote controller>...
  • Page 321 Test Operation PACD011001C2 1.8.2 Demand / Low Noise Control Connecting control input to the BMS interface adaptor for outdoor unit enables demand and low noise control. „ Demand control (figures indicate demand rate) When short circuit between (1) and (C): Approx. 70% as a guideline When short circuit between (2) and (C): Approx.
  • Page 322 PACD011001C2 Test Operation <Control input specifications> „ Input signal Constant contact a Input current is approx. 12 - 24 VDC, 10 mA per contact. Use a micro-current contact for the relay contact. (Max. 12 VDC, 1 mA) „ Outside wiring specifications Recommended electric wiring: Sheathed vinyl cord or cable 0.75 1.25 mm²...

  • Page 323: Cool / Heat Mode Selection (Mx1R Series)

    Test Operation PACD011001C2 Cool / Heat Mode Selection (MX1R Series) The UM “MX1R Series” offers the following four cool/heat mode selections. 1. Setting of cool/heat by individual outdoor unit system by indoor unit remote controller 2. Setting of cool/heat by individual outdoor unit system by cool/heat selector 3.
  • Page 324 PACD011001C2 Test Operation 1.9.2 Setting of Cool / Heat by Individual Outdoor Unit System by Cool/Heat Selector „ Doesn’t matter whether or not there is outdoor - outdoor unit wiring. „ Set SS1 of the outdoor unit PC board to “OUT / D UNIT.” „...
  • Page 325 Test Operation PACD011001C2 1.9.3 Setting of Cool / Heat by Outdoor Unit System Group in Accordance with Group Master Outdoor Unit by Indoor Unit Remote Controller „ Install the BMS interface adaptor for outdoor unit on either the outdoor - outdoor, indoor - outdoor, or indoor - indoor transmission line.
  • Page 326 PACD011001C2 Test Operation „ Supplement to 1.9.3 and 1.9.4 Supplement If using several adaptor PCB and you want to select cool/heat mode for each adaptor PCB, set DS1 / DS2 of the adaptor PCB and the cool/heat group address on the outside unit’s PCB to the same setting in setting mode 2.
  • Page 327 Test Operation PACD011001C2 Setting Method 1.9.3 and 1.9.4 address setting method (combine lower 5 digits as binary number) Test Operation Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 328 PACD011001C2 Test Operation 1.9.5 Setting cool/heat for outdoor units of all BMS interface adaptors for outdoor unit using the cool/heat central remote controller „ Install the BMS interface adaptor for outdoor unit in the outdoor-to-outdoor, indoor-to-outdoor or indoor- to-indoor signal transmission line. „...
  • Page 329 Test Operation PACD011001C2 Address settings to be made in step 1.9.5 (set two middle digits and three lower digits based on binary system) [No. 0 · 0 ~ 3 · 7] Test Operation Urban Multi “MX1R, ME1R Series” Using R-407C...

  • Page 330: Cool / Heat Mode Switching (Me1R Series)

    PACD011001C2 Test Operation 1.10 Cool / Heat Mode Switching (ME1R Series) The UM “ME1R Series” offers the following 3 cool/heat modes. 1. Set cool/heat individually for all HR box systems using the indoor unit remote controller. 2. Set cool/heat individually for all HR box systems using the cool/heat select remote controller. 3.
  • Page 331 Test Operation PACD011001C2 1.10.3 Set cool/heat individually for all HR box systems using the cool/heat central remote controller. „ Install the "BMS interface adaptor for outdoor unit" in HR box. Test Operation Urban Multi “MX1R, ME1R Series” Using R-407C...

  • Page 332: Low Noise / Demand Operation (Mx1R Series)

    PACD011001C2 Test Operation 1.11 Low Noise / Demand Operation (MX1R Series) BMS interface adaptor for outdoor unit is required for each low noise and demand control zone. „ By using a separate BMS interface adaptor for outdoor unit and setting the outdoor unit address (setting mode 2) for each low noise and demand control zone, demand and low noise operation is carried out in accordance with contact input received from the adaptor in each zone.
  • Page 333 Test Operation PACD011001C2 Wiring Method Wire to the control box for the indoor unit or HR box. (Note: Differs according to the type of outside control adaptor.) Demand / Low Short circuit between Demand 1 and C: Holds demand down to approx. 70% Noise Input Short circuit between Demand 2 and C: Holds demand down to approx.

  • Page 334: Low Noise Operation (Me1R Series)

    PACD011001C2 Test Operation 1.12 Low Noise Operation (ME1R Series) By connecting the external contact input to the low noise input of the BMS interface adaptor for outdoor unit (optional), you can save power and lower operating noise by 2 -3 dB. 1.

  • Page 335: Demand Control (Me1R Series)

    Test Operation PACD011001C2 1.13 Demand Control (ME1R Series) By connecting the external contact input to the demand input of the BMS interface adaptor for outdoor unit (option), the compressor operating conditions can be controlled for reduced power consumption. 1. Demand 1 Approximately 70% level 2.

  • Page 336: Wiring Check Operation

    PACD011001C2 Test Operation 1.14 Wiring Check Operation If within 12 hours of stopping cooling or heating, be sure to run all indoor units in the system you want to check in the fan mode for about 60 minutes in order to prevent mis-detection. Operation Method 1.

  • Page 337: Indoor Field Setting

    Test Operation PACD011001C2 1.15 Indoor Field Setting Making a field setting Field settings must be made by remote controller if optional accessories have been installed on the indoor unit, or if the indoor unit or HRV unit’s individual functions have been modified. 1.15.1 Wired Remote Controller <CZ-01RT Type>...
  • Page 338 PACD011001C2 Test Operation 2. The mode numbers inside parentheses cannot be used by wireless remote controllers, so they cannot be set individually. Setting changes also cannot be checked. 3. Mode numbers 17 (27) and 19 (29) are HRV functions that can be set from a UM Series remote controller.

  • Page 339: Centralised Control Group No. Setting

    Test Operation PACD011001C2 1.16 Centralised Control Group No. Setting „ If carrying out centralized control by central remote controller or unified ON/OFF controller, group No. CZ-01RT Type must be set for each group individually by remote controller. „ Group No. setting by remote controller for centralized control 1.
  • Page 340 PACD011001C2 Test Operation „ Group No. setting by wireless remote controller for centralized control CZ-01·02RW Type 1. When in the normal mode, push the button for 4 seconds or more, and operation then enters the “field set mode.” 2. Set mode No. “00” with the button.

  • Page 341: Setting Of Master Remote Controller

    Test Operation PACD011001C2 1.17 Setting of Master Remote Controller By Indoor Unit Operation mode (Fan, Dry, Cool, Heat) can be freely selected by indoor unit remote controller for the UM Remote Controller series outdoor units, however, as shown in the example below, the remote controller of one of the indoor units connected to 1 outdoor unit must be set as the master remote controller for Fan, Dry, Cool, Heat.
  • Page 342 PACD011001C2 Test Operation Operation Contents and Function Set to Cool/Heat/Auto If you set a Master remote controller The other remote controllers (Remote controller not displaying (Remote controllers displaying <CHANGEOVER UNDER CONTROL>) <CHANGEOVER UNDER CONTROL>) l switch to the operation mode set by the master remote controller.
  • Page 343 Test Operation PACD011001C2 Test Operation Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 344 PACD011001C2 3DUW#7 3DUW#7 3DUW#7 3DUW#7 7URXEOHVKRRWLQJ 7URXEOHVKRRWLQJ 7URXEOHVKRRWLQJ 7URXEOHVKRRWLQJ 1. Operation Flowcharts ................325 1.1 Indoor Unit Operation Flowchart ............325 1.2 Outdoor Unit Operation Flowchart............330 2. Troubleshooting by Remote Controller ..........334 2.1 The INSPECTION / TEST Button............334 2.2 Self-diagnosis by Wired Remote Controller .........335 2.3 Self-diagnosis by Wireless Remote Controller ........336 2.4 Operation of The Remote Controller’s Inspection / Test Operation Button ................339...
  • Page 345 PACD011001C2 3.28 Malfunction of Transmission Between Indoor Units ......371 3.29 Malfunction of Transmission Between Remote Controller and Indoor Unit........372 3.30 Malfunction of Transmission Between Outdoor Units ......373 3.31 Malfunction of Transmission Between Master and Slave Remote Controllers ........374 3.32 Malfunction of Transmission Between Indoor and Outdoor Units in the Same System.....375 3.33 Excessive Number of Indoor Units ............376 3.34 Address Duplication of Central Remote Controller.......377...

  • Page 346: Operation Flowcharts

    PACD011001C2 Operation Flowcharts Operation Flowcharts Indoor Unit Operation Flowchart Start Power on Initialize electronic expansion valve YIE Louver lock detection   Indicates previous settings for air flow Remote contoller lamp on   rate and direction and temperature Cycle operation using operation Operation ON/OFF? ON/OFF switch...
  • Page 347 Operation Flowcharts PACD011001C2 Cooling operation Auxiliary electric heater (52H): OFF Moisture prevention Swing flap? conditions? Moisture prevention position Swing flap Set direction of air flow Cassette: P1 Suspended :P0 Program dry on/off? Program dry in operation Program dry display: Cancelled Fan M1F operating at set volume of air flow Option...
  • Page 348 PACD011001C2 Operation Flowcharts Program dry operation ∗7 Program dry display ∗8 Fan MF : 6 minutes stopped Thermostat status? then L operation Electronic expansion valve Fan MF : L operation closed (Option) Electronic expansion valve Drain-up kit M1P : Off after 5 degree of super heat control minutes residual operation (M055)
  • Page 349 Operation Flowcharts PACD011001C2 Heating operation Drain kit (M1P): OFF Swing flap? ∗12 ∗12 Air flow direction setting Swing flap Defrost operation in progress? ∗13 Hot start in progress? Defrost/Hot start display: OFF Defrost/Hot start display: ON Recycling guard timer ON (5 minutes)? Test run in progress? ∗14 Thermostat status?
  • Page 350 PACD011001C2 Operation Flowcharts ∗ 14 Thermostat status ∗ 15 Low discharge air temperature protection Protection is effected when the preset temperature is 24°C or lower and the opening of the electronic expansion valve is slight. Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C...

  • Page 351: Outdoor Unit Operation Flowchart

    Operation Flowcharts PACD011001C2 Outdoor Unit Operation Flowchart Start Power on Initialize electronic expansion valve (Y1E) Fan or temperature control? Temperature control Restart prevention in progress (5 minutes) ? Has indoor unit thermostat on operation signal been output to more than 1 unit? ∗16 Actuation...
  • Page 352 PACD011001C2 Operation Flowcharts Cooling operation ∗18 Start control in progress? Oil equalization in progress? ∗19 Compressor protection operation in progress? ∗22 Low temperature protection operation in progress? Inverter compressor magnetic contactor Inverter output frequency 30~116 Hz by PI 30~116 Hz by PI and 38 Hz 30~116 Hz 42 Hz...
  • Page 353 Operation Flowcharts PACD011001C2 Heating operation ∗18 Start control in progress? Defrosting operation in progress? Oil equalization in progress? ∗23 Compressor protection operation in progress? Inverter compressor magnetic contactor Inverter output frequency 30~116 Hz by PI 30~116 Hz by PI and 38 Hz 86 Hz 42 Hz...
  • Page 354 PACD011001C2 Operation Flowcharts ∗ 20 PI control Controls ON/OFF of the standard compressor and inverter output frequency so that suction pressure is the optimal value. ∗ 21 Discharge temperature protection ∗ 22 Fan control during low temperature protection If Tc is less than 26.1°C for 30 continuous seconds, fan speed changes as follows: H + ON / H + OFF / L + OFF.

  • Page 355: Troubleshooting By Remote Controller

    Troubleshooting by Remote Controller PACD011001C2 2. Troubleshooting by Remote Controller The INSPECTION / TEST Button The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. Depress Inspection/Test Operation button for more than 4 seconds. Indoor unit settings can be made Service data can be obtained.

  • Page 356: Self-Diagnosis By Wired Remote Controller

    PACD011001C2 Troubleshooting by Remote Controller Self-diagnosis by Wired Remote Controller Explanation If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.

  • Page 357: Self-Diagnosis By Wireless Remote Controller

    Troubleshooting by Remote Controller PACD011001C2 Self-diagnosis by Wireless Remote Controller In the Case of If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. CZ-01RW Type The malfunction code can be determined by following the procedure described below. (The malfunction code is displayed when an operation error has occurred.
  • Page 358 PACD011001C2 Troubleshooting by Remote Controller „ The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C...
  • Page 359 Troubleshooting by Remote Controller PACD011001C2 Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C...

  • Page 360: Operation Of The Remote Controller's Inspection / Test Operation Button

    PACD011001C2 Troubleshooting by Remote Controller Operation of The Remote Controller’s Inspection / Test Operation Button Unit Malfunction code Inspection Normal display (No display) Malfunction code blinks when a malfunction occurs. Inspection/test Push the button. operation Unit Example of capacity code display 0 7 1...

  • Page 361: Remote Controller Service Mode

    Troubleshooting by Remote Controller PACD011001C2 Remote Controller Service Mode How to Enter the Service Mode Service Mode 1. Select the mode No. Operation Method Set the desired mode No. with the button. (For wireless remote controller, Mode 43 only can be set.) 2.
  • Page 362 PACD011001C2 Troubleshooting by Remote Controller Mode No Function Contents and operation method Remote controller display example Malfunction hysteresis Display malfunction hysteresis. display The hysteresis No. can be changed with the Unit 1 button. Malfunction code 2-U4 Malfunction code Hysteresis No: 1 - 9 1: Latest (VE007) Display of sensor and...

  • Page 363: Remote Controller Self-Diagnosis Function

    Troubleshooting by Remote Controller PACD011001C2 Remote Controller Self-Diagnosis Function (Display of Malfunction Code) The remote controller switches are equipped with a self diagnosis function so that more appropriate maintenance can be carried out. If a malfunction occurs during operation, the operation lamp, malfunction code and display of malfunctioning unit No.
  • Page 364 PACD011001C2 Troubleshooting by Remote Controller Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Refered Outdoor Malfunction of thermistor (R2T) for heat exchanger Unit (loose connection, disconnection, short circuit, failure) Malfunction of thermistor (R2T) for heat exchanger (loose connection, disconnection, short circuit, failure) Malfunction of discharge pipe pressure sensor Malfunction of suction pipe pressure sensor Malfunction of oil temperature thermistor (R5T)

  • Page 365: Troubleshooting

    Troubleshooting PACD011001C2 Troubleshooting Indoor Unit: Error of External Protection Device A0 A0 A0 A0 Remote Controller Display „ Actuation of external protection device Supposed Causes „ Improper field set „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 366: Indoor Unit: Pc Board Defect

    PACD011001C2 Troubleshooting Indoor Unit: PC Board Defect A1 A1 A1 A1 Remote Controller Display „ Defect of indoor unit PC board Supposed Causes Troubleshooting Replace the indoor unit PC board. Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C...

  • Page 367: Indoor Unit: Malfunction Of Drain Level Control System (33H)

    Troubleshooting PACD011001C2 Indoor Unit: Malfunction of Drain Level Control System (33H) A3 A3 A3 A3 Remote Controller Display „ Defect of float switch or short circuit connector Supposed Causes „ Defect of drain pump „ Drain clogging, upward slope, etc. „...

  • Page 368: Indoor Unit: Fan Motor (M1F) Lock, Overload

    PACD011001C2 Troubleshooting Indoor Unit: Fan Motor (M1F) Lock, Overload A6 A6 A6 A6 Remote Controller Display „ Fan motor lock Supposed Causes „ Disconnected or faulty wiring between fan motor and PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 369: Indoor Unit: Malfunction Of Swing Flap Motor (M1S)

    Troubleshooting PACD011001C2 Indoor Unit: Malfunction of Swing Flap Motor (M1S) A7 A7 A7 A7 Remote Controller Display „ Defect of swing motor Supposed Causes „ Defect of connection cable (power supply and limit switch) „ Defect of air flow direction adjusting flap-cam „...

  • Page 370: Indoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (Y1E)

    PACD011001C2 Troubleshooting Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E) A9 A9 A9 A9 Remote Controller Display „ Malfunction of moving part of electronic expansion valve Supposed Causes „ Defect of indoor unit PC board „ Defect of connecting cable Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 371: Indoor Unit: Drain Level Above Limit

    Troubleshooting PACD011001C2 Indoor Unit: Drain Level above Limit AF AF AF AF Remote Controller Display „ Humidifier unit (optional accessory) leaking Supposed Causes „ Defect of drain pipe (upward slope, etc.) „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 372: Indoor Unit: Malfunction Of Capacity Determination Device

    PACD011001C2 Troubleshooting Indoor Unit: Malfunction of Capacity Determination Device AJ AJ AJ AJ Remote controller display „ You have forgotten to install the capacity setting adaptor. Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 373: Indoor Unit: Malfunction Of Thermistor (R2T) For Liquid Pipe

    Troubleshooting PACD011001C2 Indoor Unit: Malfunction of Thermistor (R2T) for Liquid Pipe C4 C4 C4 C4 Remote Controller Display „ Defect of thermistor (R2T) for liquid pipe Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 374: Indoor Unit: Malfunction Of Thermistor (R3T) For Gas Pipes

    PACD011001C2 Troubleshooting 3.10 Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes C5 C5 C5 C5 Remote Controller Display „ Defect of indoor unit thermistor (R3T) for gas pipe Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 375: Indoor Unit: Malfunction Of Thermistor (R1T) For Air Inlet

    Troubleshooting PACD011001C2 3.11 Indoor Unit: Malfunction of Thermistor (R1T) for Air Inlet C9 C9 C9 C9 Remote Controller Display „ Defect of indoor unit thermistor (R1T) for air inlet Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 376: Indoor Unit: Malfunction Of Thermostat Sensor In Remote Controller

    PACD011001C2 Troubleshooting 3.12 Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller Remote Controller Display „ Defect of remote controller thermistor Supposed Causes „ Defect of remote controller PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 377: Outdoor Unit: Actuation Of Safety Device

    Troubleshooting PACD011001C2 3.13 Outdoor Unit: Actuation of Safety Device E0 E0 E0 E0 Remote Controller Display „ Actuation of outdoor unit safety device Supposed Causes „ Defect of outdoor unit PC board „ Instantaneous power failure Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 378: Outdoor Unit: Pc Board Defect

    PACD011001C2 Troubleshooting 3.14 Outdoor Unit: PC Board Defect E1 E1 E1 E1 Remote Controller Display „ Defect of outdoor unit PC board (A1P) Supposed Causes Troubleshooting Replace outdoor unit PC board A1P. Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C...

  • Page 379: Outdoor Unit: Actuation Of High Pressure Switch

    Troubleshooting PACD011001C2 3.15 Outdoor Unit: Actuation of High Pressure Switch E3 E3 E3 E3 Remote Controller Display „ Actuation of outdoor unit high pressure switch Supposed Causes „ Defect of outdoor unit PC board (A1P) „ Instantaneous power failure Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 380: Outdoor Unit: Actuation Of Low Pressure Switch

    PACD011001C2 Troubleshooting 3.16 Outdoor Unit: Actuation of Low Pressure Switch E4 E4 E4 E4 Remote Controller Display „ Abnormal drop of low pressure (0 kg/cm² [0 MPa]) Supposed Causes „ Defect of low pressure sensor „ Defect of outdoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 381: Outdoor Unit: Malfunction Of Moving Part Of Electronic Expansion Valve (Y1E)

    Troubleshooting PACD011001C2 3.17 Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E) E9 E9 E9 E9 Remote Controller Display „ Defect of moving part of electronic expansion valve Supposed Causes „ Defect of outdoor unit PC board (A1P) „...

  • Page 382: Outdoor Unit: Abnormal Discharge Pipe Temperature

    PACD011001C2 Troubleshooting 3.18 Outdoor Unit: Abnormal Discharge Pipe Temperature F3 F3 F3 F3 Remote Controller Display „ Abnormal discharge pipe temperature Supposed Causes „ Defect of discharge pipe thermistor (CU-5:R3T, CU-8·10: R3-1T, R3-2T) „ Defect of outdoor unit PC board „...

  • Page 383: Outdoor Unit: Malfunction Of Thermistor (R1T) For Outdoor Air

    Troubleshooting PACD011001C2 3.19 Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air H9 H9 H9 H9 Remote Controller Display „ Defect of thermistor (R1T) for outdoor unit outdoor air intake Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 384: Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R3T)

    PACD011001C2 Troubleshooting 3.20 Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3T) J3 J3 J3 J3 Remote Controller Display „ Defect of thermistor (CU-5: R3T, CU-8·10: R3-1T, R3-2T) for outdoor unit discharge pipe Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 385: Outdoor Unit: Malfunction Of Thermistor (R4T) For Suction Pipe

    Troubleshooting PACD011001C2 3.21 Outdoor Unit: Malfunction of Thermistor (R4T) for Suction Pipe J5 J5 J5 J5 Remote Controller Display „ Defect of thermistor (R4T or R4-1T, R4-2T) for outdoor unit suction pipe Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 386: Outdoor Unit: Malfunction Of Thermistor (R2T) For Heat Exchanger

    PACD011001C2 Troubleshooting 3.22 Outdoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger J6 J6 J6 J6 Remote Controller Display „ Defect of thermistor (R2T or R2-1T, R2-2T) for outdoor unit coil Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 387: Outdoor Unit: Malfunction Of Discharge Pipe Pressure Sensor

    Troubleshooting PACD011001C2 3.23 Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor JA JA JA JA Remote Controller Display „ Defect of high pressure sensor system Supposed Causes „ Connection of low pressure sensor with wrong connection. „ Defect of outdoor unit PC board. Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 388: Outdoor Unit: Malfunction Of Suction Pipe Pressure Sensor

    PACD011001C2 Troubleshooting 3.24 Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor JC JC JC JC Remote Controller Display „ Defect of low pressure sensor system Supposed Causes „ Connection of high pressure sensor with wrong connection. „ Defect of outdoor unit PC board. Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 389: Outdoor Unit: Malfunction Of Oil Temperature Thermistor (R5T)

    Troubleshooting PACD011001C2 3.25 Outdoor Unit: Malfunction of Oil Temperature Thermistor (R5T) JH JH JH JH Remote Controller Display „ Defect of oil temperature thermistor (R5T) Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 390: Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure

    PACD011001C2 Troubleshooting 3.26 Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure U0 U0 U0 U0 Remote Controller Display „ Refrigerant shortage or refrigerant system clogging (incorrect piping) Supposed Causes „ Defect of pressure sensor „ Defect of outdoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 391: Negative Phase, Open Phase

    Troubleshooting PACD011001C2 3.27 Negative Phase, Open Phase U1 U1 U1 U1 Remote Controller Display „ Power supply negative phase Supposed Causes „ Power supply open phase „ Defect of outdoor PC board A1P Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 392: Malfunction Of Transmission Between Indoor Units

    PACD011001C2 Troubleshooting 3.28 Malfunction of Transmission Between Indoor Units U4 U4 U4 U4 Remote Controller Display „ Indoor to outdoor,outdoor to outdoor crossover wiring, disconnection or short circuit Supposed Causes „ Outdoor unit power supply is OFF „ System address doesn’t match „...

  • Page 393: Malfunction Of Transmission Between Remote Controller And Indoor Unit

    Troubleshooting PACD011001C2 3.29 Malfunction of Transmission Between Remote Controller and Indoor Unit U5 U5 U5 U5 Remote Controller Display „ Malfunction of indoor unit remote controller transmission Supposed Causes „ Connection of two “main” remote controllers (when using 2 remote controllers) „...

  • Page 394: Malfunction Of Transmission Between Outdoor Units

    PACD011001C2 Troubleshooting 3.30 Malfunction of Transmission Between Outdoor Units U7 U7 U7 U7 Remote Controller Display „ Improper connection of transmission wiring between outdoor unit and BMS interface adaptor for Supposed Causes outdoor unit „ Improper cool/heat selection „ Improper cool/heat unified address (outdoor unit, BMS interface adaptor for outdoor unit) „...

  • Page 395: Malfunction Of Transmission Between Master And Slave Remote Controllers

    Troubleshooting PACD011001C2 3.31 Malfunction of Transmission Between Master and Slave Remote Controllers U8 U8 U8 U8 Remote Controller Display „ Malfunction of transmission between main and sub remote controller Supposed Causes „ Connection between sub remote controllers „ Defect of remote controller PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 396: Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System

    PACD011001C2 Troubleshooting 3.32 Malfunction of Transmission Between Indoor and Outdoor Units in the Same System U9 U9 U9 U9 Remote Controller Display „ Malfunction of transmission between indoor and outdoor of other system Supposed Causes „ Malfunction of electronic expansion valve in indoor unit of other system „...

  • Page 397: Excessive Number Of Indoor Units

    Troubleshooting PACD011001C2 3.33 Excessive Number of Indoor Units UA UA UA UA Remote Controller Display „ Excess of connected indoor units Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 398: Address Duplication Of Central Remote Controller

    PACD011001C2 Troubleshooting 3.34 Address Duplication of Central Remote Controller UC UC UC UC Remote Controller Display „ Address duplication of central remote controller Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 399: Refrigerant System Not Set, Incompatible Wiring/Piping

    Troubleshooting PACD011001C2 3.35 Refrigerant System not set, Incompatible Wiring/Piping UF UF UF UF Remote Controller Display „ Improper connection of transmission wiring between indoor-outdoor unit and outdoor-outdoor unit Supposed Causes „ Failure to execute wiring check operation „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 400: Malfunction Of System, Refrigerant System Address Undefined

    PACD011001C2 Troubleshooting 3.36 Malfunction of System, Refrigerant System Address Undefined UH UH UH UH Remote Controller Display „ Improper connection of transmission wiring between indoor-outdoor unit and outdoor-outdoor unit Supposed Causes „ Defect of indoor unit PC board „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 401: Failure Diagnosis For Inverter System

    Failure Diagnosis for Inverter System PACD011001C2 Failure Diagnosis for Inverter System Points of Diagnosis The main causes for each malfunction code are given in the table below. (For details refer to the next page and those following.) • : Failure is probable { : Failure is possible …...

  • Page 402: How To Use The Monitor Switch On The Inverter Pc Board

    PACD011001C2 Failure Diagnosis for Inverter System How to use the Monitor Switch on the Inverter PC Board The monitor lets you know the contents of the latest stop due to malfunction by LED display on the inverter PC Board. The inverter is equipped with a retry function that retries operation each time stop due to malfunction occurs, and malfunction is therefore not ascertained by merely entering the five minutes standby while retry is attempted the prescribed number of times.

  • Page 403: Troubleshooting (Inverter)

    Troubleshooting (Inverter) PACD011001C2 Troubleshooting (Inverter) Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise L4 L4 L4 L4 Remote Controller Display „ Actuation of fin thermal (Actuates at min. 90°C and resets at max. 80°C) Supposed Causes „ Defect of inverter PC board „...

  • Page 404: Outdoor Unit: Inverter Instantaneous Over-Current

    PACD011001C2 Troubleshooting (Inverter) Outdoor Unit: Inverter Instantaneous Over-Current L5 L5 L5 L5 Remote Controller Display „ Defect of compressor coil (disconnected, defective insulation) Supposed Causes „ Compressor start-up malfunction (mechanical lock) „ Defect of inverter unit Troubleshooting Compressor inspection Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 405: Outdoor Unit: Inverter Thermostat Sensor, Compressor Overload

    Troubleshooting (Inverter) PACD011001C2 Outdoor Unit: Inverter Thermostat Sensor, Compressor Overload L8 L8 L8 L8 Remote Controller Display „ Compressor overload Supposed Causes „ Compressor coil disconnected „ Defect of inverter unit Troubleshooting Output current check Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 406: Outdoor Unit : Inverter Stall Prevention, Compressor Lock

    PACD011001C2 Troubleshooting (Inverter) Outdoor Unit : Inverter Stall Prevention, Compressor Lock L9 L9 L9 L9 Remote Controller Display „ Defect of compressor Supposed Causes „ Pressure differential start „ Defect of inverter unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 407: Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board

    Troubleshooting (Inverter) PACD011001C2 Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board LC LC LC LC Remote Controller Display „ Malfunction of connection between the inverter unit and outdoor unit PC board Supposed Causes „ Defect of outdoor unit PC board (transmission section) „...

  • Page 408: Power Supply Insufficient Or Instantaneous Failure

    PACD011001C2 Troubleshooting (Inverter) Power Supply Insufficient or Instantaneous Failure Remote Controller Display „ Power supply insufficient Supposed Causes „ Instantaneous failure „ Open phase „ Defect of inverter unit „ Defect of outdoor PC board „ Defect of K1M. „ Main circuit wiring defect Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 409: Outdoor Unit: Inverter Over-Ripple Protection

    Troubleshooting (Inverter) PACD011001C2 Outdoor Unit: Inverter Over-Ripple Protection P1 P1 P1 P1 Remote Controller Display „ Open phase Supposed Causes „ Voltage imbalance between phases „ Defect of main circuit capacitor „ Defect of inverter unit „ Defect of K1M „...

  • Page 410: Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise Sensor

    PACD011001C2 Troubleshooting (Inverter) Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor P4 P4 P4 P4 Remote Controller Display „ Defect of radiator fin temperature sensor Supposed Causes „ Defect of inverter unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 411: Troubleshooting (Op: Central Remote Controller)

    Troubleshooting (OP: Central Remote Controller) PACD011001C2 Troubleshooting (OP: Central Remote Controller) Malfunction of Transmission between Central Remote Controller and Indoor Unit UE UE UE UE Remote Controller Display „ Malfunction of transmission between optional controllers for centralised control and indoor unit Supposed Causes „...

  • Page 412: Pc Board Defect

    PACD011001C2 Troubleshooting (OP: Central Remote Controller) PC Board Defect M1 M1 M1 M1 Remote Controller Display „ Defect of central remote controller PC board Supposed Causes Troubleshooting Replace the central remote controller PC board. Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C...

  • Page 413: Malfunction Of Transmission Between Optional Controllers For Centralised Control

    Troubleshooting (OP: Central Remote Controller) PACD011001C2 Malfunction of Transmission between Optional Controllers for Centralised Control M8 M8 M8 M8 Remote Controller Display „ Malfunction of transmission between optional controllers for centralised control Supposed Causes „ Defect of PC board of optional controllers for centralised control Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 414: Improper Combination Of Optional Controllers For Centralised Control

    PACD011001C2 Troubleshooting (OP: Central Remote Controller) Improper Combination of Optional Controllers for Centralised Control MA MA MA MA Remote Controller Display „ Improper combination of optional controllers for centralised control Supposed Causes „ More than one master controller is connected „...

  • Page 415: Address Duplication, Improper Setting

    Troubleshooting (OP: Central Remote Controller) PACD011001C2 Address Duplication, Improper Setting MC MC MC MC Remote Controller Display „ Address duplication of central remote controller Supposed Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 416: Troubleshooting (Op: Schedule Timer)

    PACD011001C2 Troubleshooting (OP: Schedule Timer) Troubleshooting (OP: Schedule Timer) Malfunction of Transmission between Central Remote Controller and Indoor Unit UE UE UE UE Remote Controller Display „ Malfunction of transmission between central remote controller and indoor unit Supposed Causes „ Disconnection of connector for setting master controller (or individual/combined switching connector) „...

  • Page 417: Pc Board Defect

    Troubleshooting (OP: Schedule Timer) PACD011001C2 PC Board Defect M1 M1 M1 M1 Remote Controller Display „ Defect of schedule timer PC board Supposed Causes Troubleshooting Replace the schedule timer PC board. Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C...

  • Page 418: Malfunction Of Transmission Between Optional Controllers For Centralised Control

    PACD011001C2 Troubleshooting (OP: Schedule Timer) Malfunction of Transmission between Optional Controllers for Centralised Control M8 M8 M8 M8 Remote Controller Display „ Malfunction of transmission between optional controllers for centralised control Supposed Causes „ Defect of PC board of optional controllers for centralized control Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 419: Improper Combination Of Optional Controllers For Centralised Control

    Troubleshooting (OP: Schedule Timer) PACD011001C2 Improper Combination of Optional Controllers for Centralised Control MA MA MA MA Remote Controller Display „ Improper combination of optional controllers for centralised control Supposed Causes „ More than one master controller is connected. „ Defect of PC board of optional controllers for centralised control Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 420: Address Duplication, Improper Setting

    PACD011001C2 Troubleshooting (OP: Schedule Timer) Address Duplication, Improper Setting MC MC MC MC Remote Controller Display „ Address duplication of optional controllers for centralised control Supposed Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 421: Troubleshooting (Op: Unified On/Off Controller)

    Troubleshooting (OP: Unified ON/OFF Controller) PACD011001C2 Troubleshooting (OP: Unified ON/OFF Controller) Operation Lamp Blinks Remote Controller Operation lamp blinks Display „ Malfunction of transmission between optional controller and indoor unit Suppposed Causes „ Connector for setting master controller is disconnected „...

  • Page 422: Display "Under Host Computer Integrate Control" Blinks (Repeats Single Blink)

    PACD011001C2 Troubleshooting (OP: Unified ON/OFF Controller) Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink) Remote Controller “under host computer integrated control” (Repeats single blink) Display „ Address duplication of central remote controller Supposed Causes „ Improper combination of optional controllers for centralised control „...
  • Page 423 Troubleshooting (OP: Unified ON/OFF Controller) PACD011001C2 Cannot be used in combination Is the "BMS with a "BMS interface adaptor for interface adaptor for individual and unified control, for individual and unified control, unified group". Remove them and for unified group" reset the power supply for all connected? optional controllers for centralised...

  • Page 424: Display "Under Host Computer Integrate Control" Blinks (Repeats Double Blink)

    PACD011001C2 Troubleshooting (OP: Unified ON/OFF Controller) Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) Remote Controller “under host computer integrated control” (Repeats double blink) Display „ Central control address (group No.) is not set for indoor unit. Supposed Causes „...
  • Page 425 Troubleshooting (OP: Unified ON/OFF Controller) PACD011001C2 Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C...

  • Page 426: 80#6Hulhv#8Vlqj#5073

    PACD011001C2 80#6HULHV#8VLQJ#5073:&# 80#6HULHV#8VLQJ#5073:&# 80#6HULHV#8VLQJ#5073:&# 80#6HULHV#8VLQJ#5073:&# &RPELQDWLRQ &RPELQDWLRQ 0;45#6HULHV 0;45#6HULHV &RPELQDWLRQ &RPELQDWLRQ 0;45#6HULHV 0;45#6HULHV UM Combination “MA1R Series” Using R-407C...
  • Page 427 PACD011001C2 UM Combination “MA1R Series” Using R-407C...
  • Page 428 PACD011001C2 3DUW#4 3DUW#4 3DUW#4 3DUW#4 *HQHUDO#,QIRUPDWLRQ *HQHUDO#,QIRUPDWLRQ *HQHUDO#,QIRUPDWLRQ *HQHUDO#,QIRUPDWLRQ 1. Product Outline ...................408 1.1 Year 2001 Models Using New Refrigerant ...........408 1.2 Outline of New Series Products ............409 1.3 Model Configuration and Combination ..........411 General Information UM Combination “MA1R Series” Using R-407C...

  • Page 429: Product Outline

    Product Outline PACD011001C2 1. Product Outline Year 2001 Models Using New Refrigerant Outdoor Unit Series O New model Equivalent horsepower (HP) Series name Urban Multi series Indoor Unit Series O New model Model Type Type Type Type Type Type Type Type Type Type...

  • Page 430: Outline Of New Series Products

    PACD011001C2 Product Outline Outline of New Series Products In addition to the use of a new refrigerant (R407C), the new series products incorporate a function-unit-less structure for significantly improved flexibility and ease of installation. System outline Standard series General name PA~MA Main unit name CU~MA...
  • Page 431 Product Outline PACD011001C2 Other versatile functions are „ Long refrigerant piping : equivalent provided length of 125, actual length of 100 m and height difference of 50 m. „ Connection of indoor unit of varying capacities and types totaling 130% (max.) of outdoor unit by capacity.

  • Page 432: Model Configuration And Combination

    PACD011001C2 Product Outline Model Configuration and Combination Number of units and capacity of connectable indoor units Standard Equivalent output 16HP 18HP 20HP 24HP series R407C Urban Multi Combination series system PA-16MA1XPK PA-18MA1XPK PA-20MA1XPK PA-24MA1XPK model Outdoor unit combination Main unit CU-8MA1XPK CU-10MA1XPK CU-10MA1XPK...
  • Page 433 Product Outline PACD011001C2 General Information UM Combination “MA1R Series” Using R-407C...
  • Page 434 PACD011001C2 3DUW#5 3DUW#5 3DUW#5 3DUW#5 )XQFWLRQ )XQFWLRQ )XQFWLRQ )XQFWLRQ 1. Outdoor Unit Refrigerant System Diagram .........414 1.1 Outdoor Unit Refrigerant System Diagram...........414 1.2 Flow of Refrigerant in Each Operating Mode ........417 2. List of Safety Device and Function Parts Setting Value......421 2.1 Outdoor Unit ..................421 2.2 Indoor Unit....................422 3.

  • Page 435: Outdoor Unit Refrigerant System Diagram

    Outdoor Unit Refrigerant System Diagram PACD011001C2 1. Outdoor Unit Refrigerant System Diagram Outdoor Unit Refrigerant System Diagram PA-16~30MA1XPK Name Code Function Remarks Inverter compressor Combination of a compressor (inverter compressor) capable of operating at 29-79 Hz with inverter drive and Constant-speed compressor 1 compressors (constant-speed compressors) operable only on commercial power supply achieves 45-step control...
  • Page 436 PACD011001C2 Outdoor Unit Refrigerant System Diagram PA-16·18·20MA1XPK Function UM Combination “MA1R Series” Using R-407C...
  • Page 437 Outdoor Unit Refrigerant System Diagram PACD011001C2 PA-24·26·28·30MA1XPK Function UM Combination “MA1R Series” Using R-407C...

  • Page 438: Flow Of Refrigerant In Each Operating Mode

    PACD011001C2 Outdoor Unit Refrigerant System Diagram Flow of Refrigerant in Each Operating Mode 1.2.1 Cooling Operation Function UM Combination “MA1R Series” Using R-407C...
  • Page 439 Outdoor Unit Refrigerant System Diagram PACD011001C2 1.2.2 Heating Operation Function UM Combination “MA1R Series” Using R-407C...
  • Page 440 PACD011001C2 Outdoor Unit Refrigerant System Diagram 1.2.3 Oil Return Operation (Cooling) Function UM Combination “MA1R Series” Using R-407C...
  • Page 441 Outdoor Unit Refrigerant System Diagram PACD011001C2 1.2.4 Oil Return Operation (Heating) Function UM Combination “MA1R Series” Using R-407C...

  • Page 442: List Of Safety Device And Function Parts Setting Value

    PACD011001C2 List of Safety Device and Function Parts Setting Value 2. List of Safety Device and Function Parts Setting Value Outdoor Unit Model Item Name Symbol 16MA1 18MA1 20MA1 24MA1 26MA1 28MA1 30MA1 Inverter Compressor JT236DAVTYE@2 JT265 J265 JT300 STD Compressor 1 JT212DATYE@2 DATYE JT236DATYE@2...

  • Page 443: Indoor Unit

    List of Safety Device and Function Parts Setting Value PACD011001C2 Indoor Unit Model Parts Name Symbol Remark CS-32 CS-40 CS-50 CS-63 CS-80 CS-100 CS-125 UMHPP UMHPP UMHPP UMHPP UMHPP UMHPP UMHPP Wired Remote Controller CZ-01RT11P Option Remote Wireless Remote Controller CZ-01RWU12P Option Controller...
  • Page 444 PACD011001C2 List of Safety Device and Function Parts Setting Value Model Parts Name Symbol Remark CS-20 CS-25 CS-32 CS-40 CS-50 CS-63 CS-80 CS-100 CS-125 FMHPP FMHPP FMHPP FMHPP FMHPP FMHPP FMHPP FMHPP FMHPP Remote Wired Remote Controller CZ-01RT11P Option Controller AC 220~240V 50Hz 1φ50W 1φ65W...
  • Page 445 List of Safety Device and Function Parts Setting Value PACD011001C2 Model Parts Name Symbol Remark 20KM1HPK 25KM1HPK 32KM1HPK 40KM1HPK 50KM1HPK 63KM1HPK Wired Remote Controller CZ-01RT11P Option Remote Wireless Remote Controller CZ-01RWK12P Option Controller AC 220~240V 50Hz Fan Motor 1φ23W 1φ37W Thermal protector 130°C : OFF 80°C : ON Motors...

  • Page 446: Outline Of Control

    PACD011001C2 Outline of Control 3. Outline of Control Outdoor Unit 3.1.1 Compressor PI Control Controls the compressor to maintain Te at constant during cooling operation and Te at constant during heating operation to ensure stable compressor performance. [Cooling operation] Controls compressor capacity to adjust Te to achieve target value (TeS). Te setting (factory setting) 10.5...
  • Page 447 Outline of Control PACD011001C2 3.1.3 Defrost Control Activates the defrosting operation to melt frost accumulated on the outdoor heat exchanger during heating operation. [Defrost start conditions] When the following conditions are met during heating operation, the defrosting operation is activated. When cumulative compressor operating time from power On or completion of previous defrosting operation exceeds 20 minutes &...
  • Page 448 PACD011001C2 Outline of Control [Defrosting operation] The defrosting operation provides the following control functions. ∗1 ∗1 Defrost out Accumulator discharge operation ending conditions 1 minute or more after completion of defrosting Step at which ∗7 20 sec delay preparation mode operation &...
  • Page 449 Outline of Control PACD011001C2 3.1.4 Low Outside Temperature Cooling Control Controls the outdoor unit fans and compressors to prevent refrigerant circulation from decreasing due to lowering of high pressure and to maintain high pressure when the outside temperature is low during cooling operation.
  • Page 450 PACD011001C2 Outline of Control „ When condition (Th6 – Te < 5) remains for 3 continuous minutes in steps higher than step 1-2, EVs of all indoor units in thermostat-OFF status are set to 200 pls. This is canceled when Th6 – Te > 15. (for prevention of wet operation in cooling operation when outside temperature is low) Th6 –...
  • Page 451 Outline of Control PACD011001C2 Compressor Sequence Operation Regarding operation of STD compressors in 3 compressor system, STD1 and STD2 are switched under following condition. Continue (V0914) STD Compressor Operation Since ON/OFF switching of STD compressors causes a sudden change in the capacity, therefore the following operation is conducted.
  • Page 452 PACD011001C2 Outline of Control 3.1.6 Demand Control Forcibly reduces the outdoor unit capacity based on an external contact input (demand input) to decrease power consumption. The following three types of demand control are provided. Compressor upper-limit frequency Capacity reduction guideline Demand control 1 A Reduces power consumption to approx.
  • Page 453 Outline of Control PACD011001C2 3.1.8 Startup Control Fixes the frequency at a low level for a certain period of time during compressor startup to prevent liquid return. [Startup control in cooling operation] Startup control ends when ∗1 is met ∗1 41Hz∗3 52Hz Startup control ending conditions...
  • Page 454 PACD011001C2 Outline of Control 3.1.9 Oil Equalization Operation Conducts oil equalization operation at certain time intervals to prevent insufficient oil supply due to uneven oil distribution when two or three compressors are connected in parallel. [For 16~20HP model units] „ The following oil equalization operation is conducted after two STD compressors operates for 2 continuous hours.
  • Page 455 Outline of Control PACD011001C2 3.1.10 Oil Return Operation Activates the oil return operation to collect refrigerant oil from the field pipes when the following conditions are met. [Start conditions] 1. When cumulative compressor operating time from power ON exceeds 2 hours 2.
  • Page 456 PACD011001C2 Outline of Control [Oil return control (cooling operation)] Oil return OUT ∗3 ∗2 ∗2 PI control Oil return operation ending conditions 67HzrOFF PI control (upper limit) Elapsed time of 20 sec delay 8 minutes 30 sec DSHi < 20˚C 10 continuous seconds ON/OFF by LP Th6 –...
  • Page 457 Outline of Control PACD011001C2 [Oil return control (heating operation)] ∗2 Oil return OUT ∗2 ∗9 ∗3 Oil return operation ending conditions Elapsed time of 20 sec delay 8 minutes PI control DSHi < 20˚C 10 67Hz+OFF PI control continuous seconds 52Hz+OFF Th6 –...
  • Page 458 PACD011001C2 Outline of Control 3.1.11 Low Pressure Protection Control The following control is provided to protect the compressors from abnormal decrease of low pressure (LP). [Cooling mode] ·LP<0.08MPa ·& ·Ta>5˚C ·LP<0.049MPa ·& LP<0.15MPa ·Ta≤5˚C Ta : Outdoor air temp. (˚C) Compressor SVP (for hot gas Normal operation...
  • Page 459 Outline of Control PACD011001C2 3.1.12 High Pressure Protection Control The following control is provided for the compressor operating frequency and others to prevent protection devices from malfunctioning due to abnormal increase of high pressure (HP) and to protect the compressors. [Cooling mode] Retry HP >...
  • Page 460 PACD011001C2 Outline of Control Malfunction stop 3.09 MPa Forced thermostat Up to 2 times within 30 min 2.81 MPa Indoor unit control Outdoor unit control (Command from outdoor unit) Thermostat ON · · · 2000pls PI control when Normal 33Hz Step1 Thermostat OFF ·...
  • Page 461 Outline of Control PACD011001C2 3.1.13 Discharge Pipe Temperature Control Controls the liquid injection and operating frequency to prevent abnormal increase of discharge pipe temperature and compressor internal temperature. „ Opens SVTi (Y3S) (solenoid valve for inverter compressor liquid injection) for 3 minutes after Liquid Injection Control (Inverter...
  • Page 462 PACD011001C2 Outline of Control [Defrosting in oil return mode] SVTs turns ON continuously „ SVTs is OFF at any case when STD compressor stops. Operating Frequency Control [INV Compressor] HTdi≥110˚C HTdi≥115˚C Compressor upper-limit frequency Normal operation 41Hz+OFF+OFF (Nearest lower step listed below) •71Hz+ON+OFF HTdi<105˚C •75Hz+OFF+OFF...
  • Page 463 Outline of Control PACD011001C2 3.1.15 Crankcase Heater Control Controls the crankcase heater to prevent refrigerant from remaining in the inverter compressor. • Outdoor air temp. < 27 ˚C • Compressor stop during & the magnet contactor of INV compressor ON •...
  • Page 464 PACD011001C2 Outline of Control 3.1.17 Heating Pump-Down Residual Operation Conduct an operation during stop mode to discharge refrigerant from the low pressure side, since liquid refrigerant remaining in the accumulator can be sucked into the compressor during startup and dilutes the refrigerating machine oil in the compressor and lowers the lubricating performance.
  • Page 465 Outline of Control PACD011001C2 3.1.19 Fan Location and Fan Tap Fan Location (16~20HP) (1 speed) (2 speed) (1 speed) (1 speed) 230W 140W 230W 140W (INV) Master Unit Sub Unit (24~30HP) M12F M11F M22F M21F (1 speed) (2 speed) (1 speed) (1 speed) (1 speed) (1 speed)

  • Page 466: Indoor Unit

    PACD011001C2 Outline of Control Indoor Unit 3.2.1 Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below). When the Float Switch is Tripped While the Cooling Thermostat is ON: ∗...
  • Page 467 Outline of Control PACD011001C2 When the Float Switch is Tripped During Heating Operation: During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset. When the Float Switch is Tripped and “AF”...
  • Page 468 PACD011001C2 Outline of Control 3.2.2 Louver Control for Preventing Ceiling Dirt We have added a control feature that allows you to select the range of in which air direction can be adjusted in order to prevent the ceiling surrounding the air discharge outlet of ceiling mounted cassette type units from being soiled.
  • Page 469 Outline of Control PACD011001C2 3.2.3 Thermostat Sensor in Remote Controller Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use”.) Cooling If there is a significant difference in the preset temperature and the suction temperature, fine adjustment...
  • Page 470 PACD011001C2 Outline of Control Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset temperature.
  • Page 471 Outline of Control PACD011001C2 3.2.4 Freeze Prevention Freeze Prevention When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit heat by Off Cycle exchanger drops too low, the unit enters freeze prevention operation in accordance with the following (Indoor Unit) conditions, and is also set in accordance with the conditions given below.
  • Page 472 PACD011001C2 3DUW#6 3DUW#6 3DUW#6 3DUW#6 7HVW#2SHUDWLRQ 7HVW#2SHUDWLRQ 7HVW#2SHUDWLRQ 7HVW#2SHUDWLRQ 1. Test Operation ..................452 1.1 Procedure and Outline .................452 1.2 Operation When Power is Turned On ..........454 1.3 Outdoor Unit PC Board Ass’y...............455 1.4 Setting Modes ..................457 1.5 Cool / Heat Mode Selection..............464 1.6 Low Noise Operation................469 1.7 Demand Control ...................470 1.8 Sequential Start..................471...

  • Page 473: Test Operation

    Test Operation PACD011001C2 Test Operation Procedure and Outline The operation sequence is the most important thing for test operation. Follow the following outline. 1.1.1 Check The Following Before Turning Power On. Mistaken power wiring, loose screws Mistaken control transmission wiring, loose screws Piping size, presence of thermal insulation Measurement of main power circuit insulation Use a 500V megar-tester.
  • Page 474 PACD011001C2 Test Operation 1.1.3 Check Operation. Carry out wiring check operation, For wiring check operation procedure, see wiring and check wiring and piping connections. check operation. Set the operation mode to ”cool.“ Even if it's the heating season, set to cooling mode in order to prevent liquid from backing Set to the test operation mode To enter the test operation mode, push the...

  • Page 475: Operation When Power Is Turned On

    Test Operation PACD011001C2 Operation When Power is Turned On 1.2.1 When Turning On Power for First Time The unit cannot be run for up to 12 minutes to automatically set the master power and address (indoor- outdoor address, etc.). ‹ Outdoor unit ... Warning lamp (H2P) lights Test lamp (H2P) blinks Can also be set during operation described above.

  • Page 476: Outdoor Unit Pc Board Ass'y

    PACD011001C2 Test Operation Outdoor Unit PC Board Ass’y Outdoor Unit Test Operation UM Combination “MA1R Series” Using R-407C...
  • Page 477 Test Operation PACD011001C2 Transmission terminal Indoor unit, Cool/Heat selector Outdoor - Outdoor Service monitor LED (Green) LED-A SERV. MON. (V0836) Function setting mode switch and LED Function of setting between cooling and heating C/H SELECT IN/D OUT/D (V0838) Outdoor unit Switches for capacity setting when the outdoor unit PC board is replaced Capacity setting switch to spare parts PC board.

  • Page 478: Setting Modes

    PACD011001C2 Test Operation Setting Modes There are the following three setting modes. ‹ Setting mode 1 (H1P off) Used to select the cool/heat setting, low-noise run and sequential start. ‹ Setting mode 2 (H1P on) Used to modify the running status and to program addresses, etc. Usually used in servicing the system. ‹...
  • Page 479 Test Operation PACD011001C2 Mode Changing Procedure : Use the SET button to make settings. Hold down the MODE Setting mode 1 Press the MODE button. button for 5 seconds. (initial status) Press the Monitor mode Setting mode 2 SET button. Select check items with Select cool/heat run Select items with the...
  • Page 480 PACD011001C2 Test Operation 1.4.1 Setting Mode 1 Cool/heat selection setting If carried out from the indoor unit remote controller: If carried out from the cool/heat selector: (SS1) IN/D OUT/D IN/D OUT/D UNIT UNIT UNIT UNIT SELECT SELECT (Factory set) The factory settings are: C/H SELECT SEQ.
  • Page 481 Test Operation PACD011001C2 1.4.2 Setting Mode 2 To switch from setting mode 1 (normal) to setting mode 2, you must push and hold the next page button (BS1) for 5 seconds. (You cannot enter setting mode 2 while setting mode 1 is set.) Setting Procedure 1.
  • Page 482 PACD011001C2 Test Operation LED display LED display LED display No Setting item Description H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Emergency operation Emergency operation (Emergency when Inverter type operation 1) outdoor unit malfunctions.
  • Page 483 Test Operation PACD011001C2 1.4.3 Monitor Mode C/H SELECT SEQ. MODE TEST L.N.O.P. START MASTER SLAVE To enter the monitor mode, push the MODE button when in setting mode 1. MODE The lower 4 digits indicate the setting in each of the frames below.
  • Page 484 PACD011001C2 Test Operation Monitor Mode Data Mode No. Data Display Size (binary number) method {ýOýOýOýOýOý{ No 1 Cool/heat group address 0 ~ 31 Lower 6 digits {ýOýOýOýOý{ O No 2 Low noise / demand address 0 ~ 31 Lower 6 digits { OýOýOýOý{ { No 3 Not used...

  • Page 485: Cool / Heat Mode Selection

    Test Operation PACD011001C2 Cool / Heat Mode Selection The UM Combination “MA1R Series” Using R407C offers the following four cool/heat mode selections. 1. Setting of cool/heat by individual outdoor unit system by indoor unit remote controller 2. Setting of cool/heat by individual outdoor unit system by cool/heat selector 3.
  • Page 486 PACD011001C2 Test Operation 1.5.2 Setting of Cool / Heat by Individual Outdoor Unit System by Cool/Heat Selector „ Doesn’t matter whether or not there is outdoor - outdoor unit wiring. „ Set SS1 of the outdoor unit PC board to “OUT / D UNIT.” „...
  • Page 487 Test Operation PACD011001C2 1.5.3 Setting of Cool / Heat by Outdoor Unit System Group in Accordance with Group Master Outdoor Unit by Indoor Unit Remote Controller „ Install the BMS interface adaptor for outdoor unit on either the outdoor - outdoor, indoor - outdoor, or indoor - indoor transmission line.
  • Page 488 PACD011001C2 Test Operation „ Supplement to 1.5.3 and 1.5.4 Supplement If using several adaptor PCB and you want to select cool/heat mode for each adaptor PCB, set DS1 / DS2 of the adaptor PCB and the cool/heat group address on the outside unit’s PCB to the same setting in setting mode 2.
  • Page 489 Test Operation PACD011001C2 Setting Methed 1.5.3 and 1.5.4 address setting method (combine lower 5 digits as binary number) Test Operation UM Combination “MA1R Series” Using R-407C...

  • Page 490: Low Noise Operation

    PACD011001C2 Test Operation Low Noise Operation By connecting the external contact input to the low noise input of the BMS interface adaptor for outdoor unit (optional), you can save power and lower operating noise by 2 -3 dB. Instructions for 1.

  • Page 491: Demand Control

    Test Operation PACD011001C2 Demand Control By connecting the external contact input to the demand input of the BMS interface adaptor for outdoor unit (option), the compressor operating conditions can be controlled for reduced power consumption. „ Demand 1 Approximately 70% level „...

  • Page 492: Sequential Start

    PACD011001C2 Test Operation Sequential Start „ Separates path timing of commercial power supply compressors by 3 seconds each in order to prevent overcurrent when more than 1 compressor are to be started at the same time. „ Wiring system enables sequential start of up to 10 outdoor units. If you want to carry out sequential start, connect outdoor unit - outdoor unit transmission wiring as shown below.

  • Page 493: Wiring Check Operation

    Test Operation PACD011001C2 Wiring Check Operation If within 12 hours of stopping cooling or heating, be sure to run all indoor units in the system you want to check in the fan mode for about 60 minutes in order to prevent mis-detection. Operation Method 1.

  • Page 494: Additional Refrigerant Charge Operation

    PACD011001C2 Test Operation 1.10 Additional Refrigerant Charge Operation [Work procedure] 1. Conduct ordinary refrigerant charge. With the outdoor unit in non-operating condition, charge refrigerant from the liquid-side stop valve service port. (Keep the stop valves on both liquid and gas sides closed.) „...

  • Page 495: Refrigerant Recovery Mode

    Test Operation PACD011001C2 1.11 Refrigerant Recovery Mode „ The electronic expansion valves in the indoor and outdoor units are fixed in the fully open position for refrigerant recovery. [Work procedure] 1. Stop equipment operation. 2. Set the service mode. In service mode 1, press the “MODE” button for 5 seconds to enter 8 7 7 7 7 7 7 service mode 2.

  • Page 496: Indoor Field Setting

    PACD011001C2 Test Operation 1.12 Indoor Field Setting Making a field setting Field settings must be made by remote controller if optional accessories have been installed on the indoor unit. 1.12.1 Wired Remote Controller <CZ-01RT Type> 1. When in the normal mode, push the button for 4 seconds or more, and operation then enters the “field set mode.”...
  • Page 497 Test Operation PACD011001C2 1.12.3 Setting Contents and Code No. Mode Setting Contents Second Code No.(Note 3) Setting series Switch indoor Note 2 unit 10(20) Filter contamination heavy/light Super Light Approx. Heavy Approx. — — settings (Setting for display time to long life 10,000 5,000...

  • Page 498: Centralised Control Group No. Setting

    PACD011001C2 Test Operation 1.13 Centralised Control Group No. Setting „ If carrying out centralised control by central remote controller or unified ON/OFF controller, group No. CZ-01RT Type must be set for each group individually by remote controller. „ Group No. setting by remote controller for centralized control 1.
  • Page 499 Test Operation PACD011001C2 Group No. Setting Example Centoral Remote Controller Indoor/Outdoor Outdoor/Outdoor Indoor/Outdoor Outdoor/Outdoor F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 F1 F2 P1 P2 Group Control by Remote Contoller Main 1-00...

  • Page 500: Contents Of Control Modes

    PACD011001C2 Test Operation 1.14 Contents of Control Modes Twenty modes consisting of combinations of the following five operation modes with temperature and operation mode setting by remote controller can be set and displayed by operation modes 0 through 19. ‹ ON/OFF control impossible by remote controller Used when you want to turn on/off by central remote controller only.
  • Page 501 Test Operation PACD011001C2 Test Operation UM Combination “MA1R Series” Using R-407C...

  • Page 502: 3Duw#7 7Urxeohvkrrwlqj 1111111111111111111111111111111111111111111111111111111111111 7;4

    PACD011001C2 3DUW#7 3DUW#7 3DUW#7 3DUW#7 7URXEOHVKRRWLQJ 7URXEOHVKRRWLQJ 7URXEOHVKRRWLQJ 7URXEOHVKRRWLQJ 1. Operation Flowcharts ................483 1.1 Indoor Unit Operation Flowchart ............483 2. Troubleshooting by Remote Controller ..........488 2.1 The INSPECTION / TEST Button............488 2.2 Self-diagnosis by Wired Remote Controller .........489 2.3 Self-diagnosis by Wireless Remote Controller ........490 2.4 Operation of The Remote Controller’s Inspection / Test Operation Button ................493 2.5 Remote Controller Service Mode ............494...
  • Page 503 PACD011001C2 3.30 Malfunction of Transmission Between Master and Slave Remote Controllers ........527 3.31 Malfunction of Transmission Between Indoor and Outdoor Units in the Same System.....528 3.32 Excessive Number of Indoor Units ............529 3.33 Address Duplication of Central Remote Controller.......530 3.34 Refrigerant System not Set, Incompatible Wiring/Piping......531 3.35 Malfunction of System, Refrigerant System Address Undefined..532 4.

  • Page 504: Operation Flowcharts

    PACD011001C2 Operation Flowcharts Operation Flowcharts Indoor Unit Operation Flowchart Start Power on Initialize electronic expansion valve YIE Louver lock detection   Indicates previous settings for air flow Remote contoller lamp on   rate and direction and temperature Operation ON/OFF? Operation display lamp: OFF Operation display: Blinking Action of safety device?
  • Page 505 Operation Flowcharts PACD011001C2 Cooling operation Auxiliary electric heater (K1R): OFF Humidifier (Hu) : OFF Moisture prevention Swing flap? condition? Moisture prevention position Swing flap Set direction of air flow Cassette: P1 Suspended :P0 Program dry on/off? Program dry in operation Program dry display: Cancelled Fan M1F operating at set volume of air flow...
  • Page 506 PACD011001C2 Operation Flowcharts Program dry operation ∗7 Program dry display ∗8 Fan M1F : 6 minutes stopped Thermostat status? then L operation Electronic expansion valve Fan M1F : operation: L closed (Option) Electronic expansion valve Drain-up kit M1P : Off after 5 degree of super heat control minutes residual operation (VF023)
  • Page 507 Operation Flowcharts PACD011001C2 Heating operation Drain kit (M1P): OFF Swing flap? ∗12 ∗12 Air flow direction setting Swing flap Defrost operation in progress? ∗13 Hot start in progress? Defrost/Hot start display: OFF Defrost/Hot start display: ON Recycling gurad timer ON (5 minutes)? Test run in progress? ∗14 Thermostat status?
  • Page 508 PACD011001C2 Operation Flowcharts ∗ 14 Thermostat status ∗ 15 Low discharge air temperature protection Protection is effected when the preset temperature is 24°C or lower and the opening of the electronic expansion valve is slight. Troubleshooting UM Combination “MA1R Series” Using R-407C...

  • Page 509: Troubleshooting By Remote Controller

    Troubleshooting by Remote Controller PACD011001C2 2. Troubleshooting by Remote Controller The INSPECTION / TEST Button The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. Depress Inspection/Test Operation button for more than 4 seconds. Indoor unit settings can be made Service data can be obtained.

  • Page 510: Self-Diagnosis By Wired Remote Controller

    PACD011001C2 Troubleshooting by Remote Controller Self-diagnosis by Wired Remote Controller Explanation If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.

  • Page 511: Self-Diagnosis By Wireless Remote Controller

    Troubleshooting by Remote Controller PACD011001C2 Self-diagnosis by Wireless Remote Controller In the Case of If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. CZ-01RW Type The malfunction code can be determined by following the procedure described below. (The malfunction code is displayed when an operation error has occurred.
  • Page 512 PACD011001C2 Troubleshooting by Remote Controller „ The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. Troubleshooting UM Combination “MA1R Series” Using R-407C...
  • Page 513 Troubleshooting by Remote Controller PACD011001C2 Troubleshooting UM Combination “MA1R Series” Using R-407C...

  • Page 514: Operation Of The Remote Controller's Inspection / Test Operation Button

    PACD011001C2 Troubleshooting by Remote Controller Operation of The Remote Controller’s Inspection / Test Operation Button Unit Malfunction code Inspection Normal display (No display) Malfunction code blinks when a malfunction occurs. Inspection/test Push the button. operation Unit Example of capacity code display 0 7 1...

  • Page 515: Remote Controller Service Mode

    Troubleshooting by Remote Controller PACD011001C2 Remote Controller Service Mode How to Enter the Service Mode Service Mode 1. Select the mode No. Operation Method Set the desired mode No. with the button. (For wireless remote controller, Mode 43 only can be set.) 2.
  • Page 516 PACD011001C2 Troubleshooting by Remote Controller Mode No Function Contents and operation method Remote controller display example Malfunction hysteresis Display malfunction hysteresis. display The hysteresis No. can be changed with the Unit 1 button. Malfunction code 2-U4 Malfunction code Hysteresis No: 1 - 9 1: Latest (VE007) Display of sensor and...

  • Page 517: Remote Controller Self-Diagnosis Function

    Troubleshooting by Remote Controller PACD011001C2 Remote Controller Self-Diagnosis Function (Display of Malfunction Code) The remote controller switches are equipped with a self diagnosis function so that more appropriate maintenance can be carried out. If a malfunction occurs during operation, the operation lamp, malfunction code and display of malfunctioning unit No.
  • Page 518 PACD011001C2 Troubleshooting by Remote Controller Malfunction Operation Inspection Unit No. Malfunction contents Page code lamp display Refered Outdoor Malfunction of thermistor (R2T) for heat exchanger Unit (loose connection, disconnection, short circuit, failure) Malfunction of thermistor (R2T) for heat exchanger (loose connection, disconnection, short circuit, failure) Malfunction of discharge pipe pressure sensor Malfunction of suction pipe pressure sensor Malfunction of oil temperature thermistor (R5T)

  • Page 519: Troubleshooting

    Troubleshooting PACD011001C2 3. Troubleshooting Indoor Unit: Error of External Protection Device Remote Controller Display „ Actuation of external protection device Supposed Causes „ Improper field set „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 520: Indoor Unit: Pc Board Defect

    PACD011001C2 Troubleshooting Indoor Unit: PC Board Defect Remote Controller Display „ Defect of indoor unit PC board Supposed Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn power supply OFF, then power ON again.

  • Page 521: Indoor Unit: Malfunction Of Drain Level Control System (33H)

    Troubleshooting PACD011001C2 Indoor Unit: Malfunction of Drain Level Control System (33H) Remote Controller Display „ Defect of float switch or short circuit connector Supposed Causes „ Defect of drain pump „ Drain clogging, upward slope, etc. „ Defect of indoor unit PC board „...

  • Page 522: Indoor Unit: Fan Motor (M1F) Lock, Overload

    PACD011001C2 Troubleshooting Indoor Unit: Fan Motor (M1F) Lock, Overload Remote Controller Display „ Fan motor lock Supposed Causes „ Disconnected or faulty wiring between fan motor and PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 523: Indoor Unit: Malfunction Of Swing Flap Motor (M1S)

    Troubleshooting PACD011001C2 Indoor Unit: Malfunction of Swing Flap Motor (M1S) Remote Controller Display „ Defect of swing motor Supposed Causes „ Defect of connection cable (power supply and limit switch) „ Defect of air flow direction adjusting flap-cam „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 524: Indoor Unit: Malfunction Of Moving Part Of

    PACD011001C2 Troubleshooting Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E) Remote Controller Display „ Malfunction of moving part of electronic expansion valve Supposed Causes „ Defect of indoor unit PC board „ Defect of connecting cable Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 525: Indoor Unit: Drain Level Above Limit

    Troubleshooting PACD011001C2 Indoor Unit: Drain Level above Limit Remote Controller Display „ Humidifier unit (optional accessory) leaking Supposed Causes „ Defect of drain pipe (upward slope, etc.) „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 526: Indoor Unit: Malfunction Of Capacity Determination Device

    PACD011001C2 Troubleshooting Indoor Unit: Malfunction of Capacity Determination Device Remote controller display „ You have forgotten to install the capacity setting adaptor. Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 527: Indoor Unit: Malfunction Of Thermistor (R2T) For Liquid Pipe

    Troubleshooting PACD011001C2 Indoor Unit: Malfunction of Thermistor (R2T) for Liquid Pipe Remote Controller Display „ Defect of thermistor (R2T) for liquid pipe Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 528: Indoor Unit: Malfunction Of Thermistor (R3T) For Gas Pipes

    PACD011001C2 Troubleshooting 3.10 Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes Remote Controller Display „ Defect of indoor unit thermistor (R3T) for gas pipe Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 529: Indoor Unit: Malfunction Of Thermistor (R1T) For Air Inlet

    Troubleshooting PACD011001C2 3.11 Indoor Unit: Malfunction of Thermistor (R1T) for Air Inlet Remote Controller Display „ Defect of indoor unit thermistor (R1T) for air inlet Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 530: Indoor Unit: Malfunction Of Thermostat Sensor In Remote Controller

    PACD011001C2 Troubleshooting 3.12 Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller Remote Controller Display „ Defect of remote controller thermistor Supposed Causes „ Defect of remote controller PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 531: Outdoor Unit: Actuation Of Safety Device

    Troubleshooting PACD011001C2 3.13 Outdoor Unit: Actuation of Safety Device Remote Controller Display „ Actuation of outdoor unit safety device Supposed Causes „ Defect of outdoor unit PC board „ Instantaneous power failure Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 532: Outdoor Unit: Pc Board Defect

    PACD011001C2 Troubleshooting 3.14 Outdoor Unit: PC Board Defect Remote Controller Display „ Defect of outdoor unit PC board (A1P) Supposed Causes Troubleshooting Replace outdoor unit PC board A1P. Troubleshooting UM Combination “MA1R Series” Using R-407C...

  • Page 533: Outdoor Unit: Actuation Of High Pressure Switch

    Troubleshooting PACD011001C2 3.15 Outdoor Unit: Actuation of High Pressure Switch Remote Controller Display „ Actuation of outdoor unit high pressure switch Supposed Causes „ Defect of outdoor unit PC board (A1P) „ Instantaneous power failure Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 534: Outdoor Unit: Actuation Of Low Pressure Switch

    PACD011001C2 Troubleshooting 3.16 Outdoor Unit: Actuation of Low Pressure Switch Remote Controller Display „ Abnormal drop of low pressure (0 kg/cm² [0 MPa]) Supposed Causes „ Defect of low pressure sensor „ Defect of outdoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 535: Outdoor Unit: Malfunction Of Moving Part Of

    Troubleshooting PACD011001C2 3.17 Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E) Remote Controller Display „ Defect of moving part of electronic expansion valve Supposed Causes „ Defect of outdoor unit PC board (A1P) „ Defect of connecting cable Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 536: Outdoor Unit: Abnormal Discharge Pipe Temperature

    PACD011001C2 Troubleshooting 3.18 Outdoor Unit: Abnormal Discharge Pipe Temperature Remote Controller Display „ Abnormal discharge pipe temperature Supposed Causes „ Defect of discharge pipe thermistor (CU-5: R3T CU-8, 10: R3-1T, R3-2T) „ Defect of outdoor unit PC board „ Discharge pipe thermistor wrong connection „...

  • Page 537: Outdoor Unit: Malfunction Of Thermistor (R1T) For Outdoor Air

    Troubleshooting PACD011001C2 3.19 Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air Remote Controller Display „ Defect of thermistor (R1T) for outdoor air Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 538: Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R3T)

    PACD011001C2 Troubleshooting 3.20 Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R3T) Remote Controller Display „ Defect of thermistor (R3-1(11)T, R3-2(12)T or R3-13T) for outdoor unit discharge pipe Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 539: Outdoor Unit: Malfunction Of Thermistor (R4T) For Suction Pipe

    Troubleshooting PACD011001C2 3.21 Outdoor Unit: Malfunction of Thermistor (R4T) for Suction Pipe Remote Controller Display „ Defect of thermistor (R4-1(11)T, R4-2(12)T or R4-13T) for outdoor unit suction pipe Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 540: Outdoor Unit: Malfunction Of Thermistor (R2T) For Heat Exchanger

    PACD011001C2 Troubleshooting 3.22 Outdoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger Remote Controller Display „ Defect of thermistor (R2-1(11)T, R2-2(12)T or R2-13T) for outdoor unit coil Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 541: Outdoor Unit: Malfunction Of Discharge Pipe Pressure Sensor

    Troubleshooting PACD011001C2 3.23 Outdoor Unit: Malfunction of Discharge Pipe Pressure Sensor Remote Controller Display „ Defect of high pressure sensor system Supposed Causes „ Connection of low pressure sensor with wrong connection. „ Defect of outdoor unit PC board. Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 542: Outdoor Unit: Malfunction Of Suction Pipe Pressure Sensor

    PACD011001C2 Troubleshooting 3.24 Outdoor Unit: Malfunction of Suction Pipe Pressure Sensor Remote Controller Display „ Defect of low pressure sensor system Supposed Causes „ Connection of high pressure sensor with wrong connection. „ Defect of outdoor unit PC board. Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 543: Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure

    Troubleshooting PACD011001C2 3.25 Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Controller Display „ Refrigerant shortage or refrigerant system clogging (incorrect piping) Supposed Causes „ Defect of pressure sensor „ Defect of outdoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 544: Negative Phase, Open Phase

    PACD011001C2 Troubleshooting 3.26 Negative Phase, Open Phase Remote Controller Display „ Power supply negative phase Supposed Causes „ Power supply open phase „ Defect of outdoor PC board A1P Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 545: Malfunction Of Transmission Between Indoor Units

    Troubleshooting PACD011001C2 3.27 Malfunction of Transmission Between Indoor Units Remote Controller Display „ Indoor to outdoor,outdoor to outdoor crossover wiring, disconnection or short circuit Supposed Causes „ Outdoor unit power supply is OFF „ System address doesn’t match „ Defect of indoor unit PC board „...

  • Page 546: Malfunction Of Transmission Between Remote Controller And Indoor Unit

    PACD011001C2 Troubleshooting 3.28 Malfunction of Transmission Between Remote Controller and Indoor Unit Remote Controller Display „ Malfunction of indoor unit remote controller transmission Supposed Causes „ Connection of two main remote controllers (when using 2 remote controllers) „ Defect of indoor unit PC board „...

  • Page 547: Malfunction Of Transmission Between Outdoor Units

    Troubleshooting PACD011001C2 3.29 Malfunction of Transmission Between Outdoor Units Remote Controller Display „ Improper connection of transmission wiring between outdoor unit and BMS interface adaptor for Supposed Causes outdoor unit „ Improper cool/heat selection „ Improper cool/heat unified address (outdoor unit, BMS interface adaptor for outdoor unit) „...

  • Page 548: Malfunction Of Transmission Between Master And Slave Remote Controllers

    PACD011001C2 Troubleshooting 3.30 Malfunction of Transmission Between Master and Slave Remote Controllers Remote Controller Display „ Malfunction of transmission between main and sub remote controller Supposed Causes „ Connection between sub remote controllers „ Defect of remote controller PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 549: Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System

    Troubleshooting PACD011001C2 3.31 Malfunction of Transmission Between Indoor and Outdoor Units in the Same System Remote Controller Display „ Malfunction of transmission between indoor and outdoor of other system Supposed Causes „ Malfunction of electronic expansion valve in indoor unit of other system „...

  • Page 550: Excessive Number Of Indoor Units

    PACD011001C2 Troubleshooting 3.32 Excessive Number of Indoor Units Remote Controller Display „ Excess of connected indoor units Supposed Causes „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 551: Address Duplication Of Central Remote Controller

    Troubleshooting PACD011001C2 3.33 Address Duplication of Central Remote Controller Remote Controller Display „ Address duplication of central remote controller Supposed Causes „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 552: Refrigerant System Not Set, Incompatible Wiring/Piping

    PACD011001C2 Troubleshooting 3.34 Refrigerant System not Set, Incompatible Wiring/Piping Remote Controller Display „ Improper connection of transmission wiring between indoor-outdoor unit and outdoor-outdoor unit Supposed Causes „ Failure to execute wiring check operation „ Defect of indoor unit PC board Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 553: Malfunction Of System, Refrigerant System Address Undefined

    Troubleshooting PACD011001C2 3.35 Malfunction of System, Refrigerant System Address Undefined Remote Controller Display „ Improper connection of transmission wiring between indoor-outdoor unit and outdoor-outdoor unit Supposed Causes „ Defect of indoor unit PC board „ Defect of outdoor unit PC board (A1P) Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 554: Failure Diagnosis For Inverter System

    PACD011001C2 Failure Diagnosis for Inverter System Failure Diagnosis for Inverter System Points of Diagnosis The main causes for each malfunction code are given in the table below. (For details refer to the next page and those following.) • : Failure is probable { : Failure is possible …...

  • Page 555: How To Use The Monitor Switch On The Inverter Pc Board

    Failure Diagnosis for Inverter System PACD011001C2 How to Use The Monitor Switch on The Inverter PC Board The monitor lets you know the contents of the latest stop due to malfunction by LED display on the inverter PC Board. The inverter is equipped with a retry function that retries operation each time stop due to malfunction occurs, and malfunction is therefore not ascertained by merely entering the five minutes standby while retry is attempted the prescribed number of times.

  • Page 556: Troubleshooting (Inverter)

    PACD011001C2 Troubleshooting (Inverter) 5. Troubleshooting (Inverter) Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display „ Actuation of fin thermal (Actuates at min. 90°C and resets at max. 80°C) Supposed Causes „ Defect of inverter PC board „...

  • Page 557: Outdoor Unit: Inverter Instantaneous Over-Current

    Troubleshooting (Inverter) PACD011001C2 Outdoor Unit: Inverter Instantaneous Over-Current Remote Controller Display „ Defect of compressor coil (disconnected, defective insulation) Supposed Causes „ Compressor start-up malfunction (mechanical lock) „ Defect of inverter unit Troubleshooting Compressor inspection Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 558: Outdoor Unit: Inverter Thermostat Sensor, Compressor Overload

    PACD011001C2 Troubleshooting (Inverter) Outdoor Unit: Inverter Thermostat Sensor, Compressor Overload Remote Controller Display „ Compressor overload Supposed Causes „ Compressor coil disconnected „ Defect of inverter unit Troubleshooting Output current check Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 559: Outdoor Unit: Inverter Stall Prevention, Compressor Lock

    Troubleshooting (Inverter) PACD011001C2 Outdoor Unit: Inverter Stall Prevention, Compressor Lock Remote Controller Display „ Defect of compressor Supposed Causes „ Pressure differential start „ Defect of inverter unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 560: Outdoor Unit: Malfunction Of Transmission Between Inverter And Control Pc Board

    PACD011001C2 Troubleshooting (Inverter) Outdoor Unit: Malfunction of Transmission Between Inverter and Control PC Board Remote Controller Display „ Malfunction of connection between the inverter unit and outdoor unit PC board Supposed Causes „ Defect of outdoor unit PC board (transmission section) „...

  • Page 561: Power Supply Insufficient Or Instantaneous Failure

    Troubleshooting (Inverter) PACD011001C2 Power Supply Insufficient or Instantaneous Failure Remote Controller Display „ Power supply insufficient Supposed Causes „ Instantaneous failure „ Open phase „ Defect of inverter unit „ Defect of outdoor PC board „ Defect of K1M. „ Main circuit wiring defect Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 562: Outdoor Unit: Inverter Over-Ripple Protection

    PACD011001C2 Troubleshooting (Inverter) Outdoor Unit: Inverter Over-Ripple Protection Remote Controller Display „ Open phase Supposed Causes „ Voltage imbalance between phases „ Defect of main circuit capacitor „ Defect of inverter unit „ Defect of K1M „ Improper main circuit wiring Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 563: Fin Temperature Rise Sensor

    Troubleshooting (Inverter) PACD011001C2 Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display „ Defect of radiator fin temperature sensor Supposed Causes „ Defect of inverter unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 564: Troubleshooting (Op: Central Remote Controller)

    PACD011001C2 Troubleshooting (OP: Central Remote Controller) 6. Troubleshooting (OP: Central Remote Controller) Malfunction of Transmission Between Central Remote Controller and Indoor Unit Remote Controller Display „ Malfunction of transmission between optional controllers for centralised control and indoor unit Supposed Causes „...

  • Page 565: Pc Board Defect

    Troubleshooting (OP: Central Remote Controller) PACD011001C2 PC Board Defect Remote Controller Display „ Defect of central remote controller PC board Supposed Causes Troubleshooting Replace the central remote controller PC board. Troubleshooting UM Combination “MA1R Series” Using R-407C...

  • Page 566: Malfunction Of Transmission Between Optional Controllers For Centralised Control

    PACD011001C2 Troubleshooting (OP: Central Remote Controller) Malfunction of Transmission Between Optional Controllers for Centralised Control Remote Controller Display „ Malfunction of transmission between optional controllers for centralised control Supposed Causes „ Defect of PC board of optional controllers for centralised control Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 567: Improper Combination Of Optional Controllers For Centralised Control

    Troubleshooting (OP: Central Remote Controller) PACD011001C2 Improper Combination of Optional Controllers for Centralised Control Remote Controller Display „ Improper combination of optional controllers for centralised control Supposed Causes „ More than one master controller is connected „ Defect of PC board of optional controller for centralised control Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 568: Address Duplication, Improper Setting

    PACD011001C2 Troubleshooting (OP: Central Remote Controller) Address Duplication, Improper Setting Remote Controller Display „ Address duplication of central remote controller Supposed Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. two or more central Disconnect all central remote remote controllers...

  • Page 569: Troubleshooting (Op: Schedule Timer)

    Troubleshooting (OP: Schedule Timer) PACD011001C2 7. Troubleshooting (OP: Schedule Timer) Malfunction of Transmission Between Central Remote Controller and Indoor Unit Remote Controller Display „ Malfunction of transmission between central remote controller and indoor unit Supposed Causes „ Disconnection of connector for setting master controller (or individual/combined switching connector) „...

  • Page 570: Pc Board Defect

    PACD011001C2 Troubleshooting (OP: Schedule Timer) PC Board Defect Remote Controller Display „ Defect of schedule timer PC board Supposed Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Reset power supply.

  • Page 571: Malfunction Of Transmission Between Optional Controllers For Centralised Control

    Troubleshooting (OP: Schedule Timer) PACD011001C2 Malfunction of Transmission Between Optional Controllers for Centralised Control Remote Controller Display „ Malfunction of transmission between optional controllers for centralised control Supposed Causes „ Defect of PC board of optional controllers for centralised control Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 572: Improper Combination Of Optional Controllers For Centralised Control

    PACD011001C2 Troubleshooting (OP: Schedule Timer) Improper Combination of Optional Controllers for Centralised Control Remote Controller Display „ Improper combination of optional controllers for centralised control Supposed Causes „ More than one master controller is connected. „ Defect of PC board of optional controllers for centralised control Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 573: Address Duplication, Improper Setting

    Troubleshooting (OP: Schedule Timer) PACD011001C2 Address Duplication, Improper Setting Remote Controller Display „ Address duplication of optional controllers for centralised control Supposed Causes Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Are two or more schedule timers Disconnect all schedule timers except...

  • Page 574: Troubleshooting (Op: Unified On/Off Controller)

    PACD011001C2 Troubleshooting (OP: Unified ON/OFF Controller) 8. Troubleshooting (OP: Unified ON/OFF Controller) Operation Lamp Blinks Remote Controller Operation lamp blinks Display „ Malfunction of transmission between optional controller and indoor unit Suppposed Causes „ Connector for setting master controller is disconnected „...

  • Page 575: Display "Under Host Computer Integrate Control" Blinks (Repeats Single Blink)

    Troubleshooting (OP: Unified ON/OFF Controller) PACD011001C2 Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink) Remote Controller “under host computer integrated control” (Repeats single blink) Display „ Address duplication of central remote controller Supposed Causes „ Improper combination of optional controllers for centralised control „...
  • Page 576 PACD011001C2 Troubleshooting (OP: Unified ON/OFF Controller) Cannot be used in combination Is the "BMS with a "BMS interface adaptor for interface adaptor for individual and unified control, for individual and unified control, unified group". Remove them and for unified group" reset the power supply for all connected? optional controllers for centralised...

  • Page 577: Display "Under Host Computer Integrate Control" Blinks (Repeats Double Blink)

    Troubleshooting (OP: Unified ON/OFF Controller) PACD011001C2 Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) Remote Controller “under host computer integrated control” (Repeats double blink) Display „ Central control address (group No.) is not set for indoor unit. Supposed Causes „...
  • Page 578 PACD011001C2 3DUW#8 3DUW#8 3DUW#8 3DUW#8 6SHFLDO#6HUYLFH#0RGH 6SHFLDO#6HUYLFH#0RGH 6SHFLDO#6HUYLFH#0RGH 6SHFLDO#6HUYLFH#0RGH 1. Backup and Emergency Operation .............558 1.1 Backup and Emergency Operation ............558 2. Pump Down Operation................560 2.1 Pump Down Operation .................560 Special Service Mode UM Combination “MA1R Series” Using R-407C...

  • Page 579: Backup And Emergency Operation

    Backup and Emergency Operation PACD011001C2 Backup and Emergency Operation Backup and Emergency Operation 1.1.1 Backup Operation: When a constant speed type compressor malfunctions due to OC actuation, if you restart operation by remote controller after the unit stops, you can continue to operate the system without the faulty constant speed type compressor.
  • Page 580 PACD011001C2 Backup and Emergency Operation 1.1.2 Emergency Operation: Set in setting mode 2. Operates the system when an outdoor unit malfunctions. 1. When an inverter type outdoor unit malfunctions When an inverter type compressor malfunctions, you can continue operation using constant speed type compressors only.

  • Page 581: Pump Down Operation

    Pump Down Operation PACD011001C2 Pump Down Operation Pump Down Operation Pump down operation is carried out when refrigerant is moved to outdoor unit if the indoor unit is necessary to disconnect or replacing. In this case, outdoor unit operates in the cooling mode and indoor unit’s electronic expansion valves open for 30 minutes.

  • Page 582: Sshqgl

    PACD011001C2 $SSHQGL[ $SSHQGL[ $SSHQGL[ $SSHQGL[ 1. Wiring Diagrams (Outdoor Unit)............562 1.1 MX1 Series...................562 1.2 ME1 Series (Heat Recovery)..............564 1.3 MX1R Series ..................566 1.4 ME1R Series (Heat Recovery) .............568 1.5 MA1R Series (Combination)..............570 2. Wiring Diagrams (Indoor Unit).............572 2.1 2-Way Cassette Type................572 2.2 4-Way Cassette Type................574 2.3 Corner Type ..................575 2.4 Built-In Type ..................576...

  • Page 583: Wiring Diagrams (Outdoor Unit)

    Wiring Diagrams (Outdoor Unit) PACD011001C2 1. Wiring Diagrams (Outdoor Unit) MX1 Series CU-5MX1SPE Appendix...
  • Page 584 PACD011001C2 Wiring Diagrams (Outdoor Unit) CU-8·10MX1SPE Appendix...

  • Page 585: Me1 Series (Heat Recovery)

    Wiring Diagrams (Outdoor Unit) PACD011001C2 ME1 Series (Heat Recovery) CU-8·10ME1XPA Appendix...
  • Page 586 PACD011001C2 Wiring Diagrams (Outdoor Unit) CZ-100·160HR1HE Appendix...

  • Page 587: Mx1R Series

    Wiring Diagrams (Outdoor Unit) PACD011001C2 MX1R Series CU-5MX1SPP Appendix...
  • Page 588 PACD011001C2 Wiring Diagrams (Outdoor Unit) CU-8·10MX1SPP Appendix...

  • Page 589: Me1R Series (Heat Recovery)

    Wiring Diagrams (Outdoor Unit) PACD011001C2 ME1R Series (Heat Recovery) CU-8·10ME1XPK Appendix...
  • Page 590 PACD011001C2 Wiring Diagrams (Outdoor Unit) CZ-100·160HR1HP Appendix...

  • Page 591: Ma1R Series (Combination)

    Wiring Diagrams (Outdoor Unit) PACD011001C2 MA1R Series (Combination) PA-16·18·20MA1XPK Appendix...
  • Page 592 PACD011001C2 Wiring Diagrams (Outdoor Unit) PA-24·26·28·30MA1XPK Appendix...

  • Page 593: Wiring Diagrams (Indoor Unit)

    Wiring Diagrams (Indoor Unit) PACD011001C2 2. Wiring Diagrams (Indoor Unit) 2-Way Cassette Type CS-20·25·32·63LMHPP Appendix...
  • Page 594 PACD011001C2 Wiring Diagrams (Indoor Unit) CS-40·50·80·125LMHPP Appendix...

  • Page 595: 4-Way Cassette Type

    Wiring Diagrams (Indoor Unit) PACD011001C2 4-Way Cassette Type CS-20·25·32·40·50·63·80·100·125UMHPP Q2E F2U indoor K1 K2 1N~50Hz 230V INPUT FROM X18A OUTSIDE NOTE 4 X31A X13A X12A X11A X30A TRANSMISSION WIRING CENTRAL REMOTE CONTROLLER NOTE 2 WIRED REMOTE X23A NOTE 3 X25A X28A NOTE 3 CONTROLLER...

  • Page 596: Corner Type

    PACD011001C2 Wiring Diagrams (Indoor Unit) Corner Type CS-25·32·40·63DM1HPK Appendix...

  • Page 597: Built-In Type

    Wiring Diagrams (Indoor Unit) PACD011001C2 Built-In Type CS-20·25·32·40·50·63FMHPP Appendix...
  • Page 598 PACD011001C2 Wiring Diagrams (Indoor Unit) CS-80·100·125FMHPP Appendix...

  • Page 599: Ducted Type

    Wiring Diagrams (Indoor Unit) PACD011001C2 Ducted Type CS-40·50·63·80·100·125EMHPK Appendix...
  • Page 600 PACD011001C2 Wiring Diagrams (Indoor Unit) CS-200·250EMHPK Appendix...

  • Page 601: Ceiling Type

    Wiring Diagrams (Indoor Unit) PACD011001C2 Ceiling Type CS-32·63·100TMJPL Appendix...

  • Page 602: Wall Type

    PACD011001C2 Wiring Diagrams (Indoor Unit) Wall Type CS-20·25·32·40·50·63KM1HPK Appendix...

  • Page 603: Floor Standing Type / Concealed Floor Standing Type

    Wiring Diagrams (Indoor Unit) PACD011001C2 Floor Standing Type / Concealed Floor Standing Type CS-20·25·32·40·50·63PM1HPK CS-20·25·32·40·50·63RM1HPK Appendix...

  • Page 604: Small Duct Type

    PACD011001C2 Wiring Diagrams (Indoor Unit) Small Duct Type CS-20·25NM1HPP Appendix...

  • Page 605: Characteristics

    Characteristics PACD011001C2 Characteristics R407C Characteristics Liquid temp. Gas Temp. (kg/cm²) 20.4 15.3 10.2 –40 –20 Temperature ˚C (V0817) Pressure Temperature Pressure Temperature Pressure Temperature Liquid Gas Side Liquid Gas Side Liquid Gas Side Side °C °C Side °C °C Side °C °C 0.00 —...

  • Page 606: Thermistor Resistance / Temperature Characteristics

    PACD011001C2 Characteristics Thermistor Resistance / Temperature Characteristics Indoor unit For air suction For liquid pipe For gas pipe Outdoor unit For outdoor air For coil (R2-1T, R2-2T) For suction pipe (R4-1T, R4-2T) For oil For header (kΩ) T°C T°C 197.81 192.08 16.10 15.76...
  • Page 607 Characteristics PACD011001C2 Outdoor Unit Thermistors for Discharge Pipe (R3T, R3-1T, R3-2T) (kΩ)) T°C T°C T°C 640.44 624.65 72.32 70.96 13.35 13.15 609.31 594.43 69.64 68.34 12.95 12.76 579.96 565.78 67.06 65.82 12.57 12.38 552.00 538.63 64.60 63.41 12.20 12.01 525.63 512.97 62.24 61.09...

  • Page 608: Pressure Sensor

    PACD011001C2 Characteristics Pressure Sensor High Pressure P –0.5)×0.98 : Detected Pressure [High Side] MPa –0.5)× 0.98 : Detected Pressure [Low Side] MPa Low Pressure : Output Voltage [High Side] V : Output Voltage [Low Side] V Detected Pressure (kg/cm²) MPa High Pressure (P 30.6 3.0 25.5 2.5...

  • Page 609: Method Of Replacing The Inverter's Power Transistors And Diode Modules

    Characteristics PACD011001C2 Method of Replacing The Inverter’s Power Transistors and Diode Modules 3.4.1 Method of Replacing The Inverter’s Power Transistors and Diode Modules [Decision according to continuity check by analog tester] „ Before checking, disconnect the electric wiring connected to the power transistor and diode module. Power Transistor (On Inverter PC Board)
  • Page 610 PACD011001C2 Characteristics Diode Module (Decision) If other than given above, the diode module is defective and must be replaced. If using a digital tester, ∞ and continuity may be reversed. Note: Appendix...

  • Page 611: Precaution

    Precaution PACD011001C2 Precaution PC Boards and Remote Controller’s Mode No. 4.1.1 Precautions When Replacing MX1(R), ME1(R) Series PC Boards If you replace the indoor or outside unit PC board, push and hold the RESET button on the outdoor unit PC Board for 5 seconds.

  • Page 612: Typical Wiring Mistakes

    PACD011001C2 Typical Wiring Mistakes Typical Wiring Mistakes Typical Wiring Mistakes One of the indoor units is connected to outdoor-to- outdoor transmission terminals Installation / test operation Indoor unit 1 Normal Indoor unit 2 UF malfunction Other than above Indoor unit 1 Normal Indoor unit 2 U4 malfunction or no malfunction display Appendix...
  • Page 613 Typical Wiring Mistakes PACD011001C2 All Indoor Units Connected to the Outdoor-to- Outdoor Unit Terminal Installation / test operation Indoor unit 1 UF malfunction Indoor unit 2 Other than above Indoor unit 1 U4 malfunction or no malfunction display unit 2 Indoor Appendix...
  • Page 614 PACD011001C2 Typical Wiring Mistakes All Indoor Units Connected to Indoor-to-Outdoor and Outdoor-to- Outdoor Unit Terminals Installation / test operation Indoor unit 1 U4 malfunction Indoor unit 2 Appendix...
  • Page 615 Typical Wiring Mistakes PACD011001C2 Extended Indoor Unit 10 min. after turning power on Indoor unit 1 Normal Indoor unit 2 U4 malfunction ↓ Push and hold RESET button for 5 sec. ↓ After 12 minutes elapse Indoor unit 1 Normal Indoor unit 2 Normal Appendix...
  • Page 616 PACD011001C2 Typical Wiring Mistakes One of the indoor units of outdoor unit 1 is connected to outdoor-to- outdoor transmission terminals Installation / test operation Indoor unit 1 Normal Indoor unit 2 UF malfunction Indoor unit 3 Normal Indoor unit 4 Normal Other than above Indoor unit 1 Normal Indoor unit 2 U4 malfunction...
  • Page 617 Typical Wiring Mistakes PACD011001C2 The indoor-to- outdoor terminal of outdoor unit 1 and the outdoor-to- outdoor terminal of outdoor unit 2 are connected Indoor unit 1 Normal Indoor unit 2 Normal Indoor unit 3 UH malfunction Indoor unit 4 The indoor-to- outdoor terminals of outdoor units 1 and 2 are...
  • Page 618 PACD011001C2 Typical Wiring Mistakes R22 model 1. When R22 indoor unit is connected to HFC (R407C) system connection abnormalities Reason : Operation disallowed due to insufficient pressure proof in R22 indoor unit. 2. When HFC indoor unit is connected to R22 system Reason : Operation disallowed to prevent contamination of another system by HFC indoor unit operated previously with R22 system.

  • Page 619: Interface Adaptor

    Interface Adaptor PACD011001C2 6. Interface Adaptor BMS Interface Adaptor for Unified Group (KRP2A51·52) Various remote control (remote control mode, remote temperature setting, display of operation, display of malfunction) can be carried out by mounting this optional accessory in the indoor unit. Up to 64 groups of indoor units can be monitored and controlled all at once by one adaptor PC board.
  • Page 620 PACD011001C2 Interface Adaptor 6.1.2 Wiring „ Combined use of constant contact (a) and instantaneous contact (a) Operation Signal „ Combined use of voltage 12~24 VDC, no voltage „ Remote control mode selector switch (Control contents differ according to input mode. See the following Control Mode page for details.) „...
  • Page 621 Interface Adaptor PACD011001C2 6.1.3 Wiring to Outside (Host Computer Monitor Panel, Etc.) Input for Remote Wire according to the following procedure depending on whether input is “voltage input” or “no voltage Control (Control input.” „ Voltage input Mode) „ No voltage input Wiring specifications: Min.
  • Page 622 PACD011001C2 Interface Adaptor ∗ If demand controlling using input B: Position Function of input A Function of input B Remote controller inhibit Forced thermostat OFF command (Same as position 5) Forced temperature shift Individual (Same as Forced thermostat OFF command position 6) Forced temperature shift ∗...
  • Page 623 Interface Adaptor PACD011001C2 Temperature For wiring specifications, we recommend a min. 1.25 mm² sheathed vinyl cord, length within 70 m. Setting Input The relationship of preset temperature and resistance is as given in the table below. Preset temperature (°C) Resistance 13.8 22.4 39.4...

  • Page 624: Bms Interface Adaptor For Individual And Unified Control (Krp4A51 / Krp4A52 / Krp4A53)

    PACD011001C2 Interface Adaptor BMS Interface Adaptor for Individual and Unified Control (KRP4A51 / KRP4A52 / KRP4A53) The BMS interface adaptor for individual and unified control cannot be used in combination with a central remote controller, unified ON/OFF controller, schedule timer, data station, etc. <Objective / use>...
  • Page 625 Interface Adaptor PACD011001C2 „ Remote control mode selector switch (RS1) setting Position Function Operation by input mode A and B Input A (between B1~Bc) Input B (between B2~Bc) Disregard input — — Remote controller Operates by ON and stops by OFF Stops by ON, remote controller inhibited inhibited Disregard input A Input...
  • Page 626 PACD011001C2 Interface Adaptor Display Signal Normal operation output terminals (W1, W2) and malfunction output terminals (W3, W4) are no voltage, Fetch constant contact output. (Allowable current is 10 mA~3 A per contact.) Output for each system is as given in the table below. Output Both RY1 and RY2 OFF Only RY1 ON Only RY2 ON...

  • Page 627: Signal Output Adaptor Pcb For Optional Accessory (Krp1B61 / Krp1B2 / Krp1B3)

    Interface Adaptor PACD011001C2 Signal Output Adaptor PCB for Optional Accessory (KRP1B61 / KRP1B2 / KRP1B3) <Objective / use> Enables you to fetch compressor and fan operation output when optional accessories (auxiliary electric heater, humidifier, fresh air intake kit [with fan duct]) are installed. 6.3.1 Part Names and Functions KRP1B61 / KRP1B2...
  • Page 628 PACD011001C2 Interface Adaptor 6.3.2 Applicable Models and whether Optional Accessories are Required or Not Model name Adaptor Mounting Electric Natural Ultrasonic Other required Mounting position box / plate heater evaporation humidifier optional humidifier accessories CS-LM KRP1B61 Not required — — Mounted inside electrical parts box CS-DM...

  • Page 629: Interface Adaptor For Urban Split Series (Cz-102Ap11P)

    Interface Adaptor PACD011001C2 Interface Adaptor for Urban Split Series (CZ-102AP11P) <Objective / use> The interface adaptor for US series lets you connect optional controllers for centralised control (central remote controller, unified ON/OFF controller, schedule timer) with US. „ Part Names and Functions <System Outline>...
  • Page 630 PACD011001C2 Interface Adaptor 6.4.1 Connection Interface adaptor for US series Independent control Group control Pair Multi Appendix...

  • Page 631: Interface Adaptor For Other Air Conditioners (Cz-103Ap11P)

    Interface Adaptor PACD011001C2 Interface Adaptor for Other Air Conditioners (CZ-103AP11P) This optional accessory is a contact input/output interface adaptor for optional controllers for centralised control and apparatus that cannot be directly connected to them. Connecting this optional accessory to an optional controller for centralised control lets you turn the apparatus on/off by optional remote controller for centralised control and monitor normal operation and malfunctions.
  • Page 632 PACD011001C2 Interface Adaptor Input for Monitoring Wire according to the following procedure depending on whether input is “voltage” or “no voltage.” „ For voltage input: Set the voltage / no voltage changeover switch (SS1) to “voltage.” (Factory set setting complete) „...
  • Page 633 Interface Adaptor PACD011001C2 6.5.3 Mounting of CZ-103AP11P „ Storage box is field supplied. „ Outer dimensions: 230(W)×230(D)×60(H) Appendix...

  • Page 634: Bms Interface Adaptor For Outdoor Units (Dta104A51 · Dta104A52)

    PACD011001C2 Interface Adaptor BMS Interface Adaptor for Outdoor Units (DTA104A51 · DTA104A52) Objective/use By adding BMS interface adaptor for outdoor units to HR boxes or indoor units connected in a UM-net, you can simultaneously select cool/heat mode for several outdoor units in the system, and it enables demand control and low noise control.
  • Page 635 Interface Adaptor PACD011001C2 <Settings of Switches on the PC Board Adaptor> Note: For Combination Series Set the SS1 cool/heat selector switch on the function unit to “outdoor.” You must also set cool/heat selector “master” or “slave” by pushbutton switch. 6.6.3 Demand / Low Noise Control Connecting control input to the adaptor for outside control of outdoor units enables demand and low noise control.
  • Page 636 PACD011001C2 Interface Adaptor Common Address Decide the address for each control unit from 0~9 and set. Setting (DS1 / DS2) Note: 1. Setting is within 8 groups when using a cool/heat central remote controller. Set from No. 0~No. 7. 2. Be sure to make the address No. of the PC board adaptor described above match the address No. of function unit or outdoor unit (BS unit if using cool/heat simultaneous selection type).

  • Page 637: Bms Interface Adaptor (Dcs302A52)

    Interface Adaptor PACD011001C2 BMS Interface Adaptor (DCS302A52) Connecting a BMS interface adaptor to the central remote controller enables unified display on the host computer monitor panel (display of operation and malfunction), and unified control from the host computer monitor panel (on/off commands). 6.7.1 System Outline Unified Display...
  • Page 638 PACD011001C2 Interface Adaptor Wiring to Central Connect the BMS interface adaptor to connector No. CN2 of the central remote controller with the attached Remote Controller wiring for transmission. 6.7.3 Wiring Part Names and Functions External Control Specifications of wiring for transmission ‹...
  • Page 639 Interface Adaptor PACD011001C2 „ Set the changeover switch (SS1) to “no voltage.” Contact a Input for Both Input A and B (Factory set: Voltage) (No Voltage) „ The black part shows the position of the switch. 6.7.5 Control Mode Switch (RS) Setting You can select control mode at input A and B with the control mode switch on the PC board adaptor.
  • Page 640 PACD011001C2 Interface Adaptor 6.7.6 Installation of DCS302A52 „ Install inside the control panel in the same place as the central remote controller in the field. (Length of attached wiring is approx. 5 m.) „ Fasten securely with the attached screws. Appendix...

  • Page 641: Precautions In Servicing The Models With New-Type Refrigerant

    Precautions in Servicing The Models with New-type Refrigerant PACD011001C2 Precautions in Servicing The Models with New-type Refrigerant Compared to the conventional refrigerant R22, the brand-new refrigerant R407C is higher in pressure. The refrigerant oil is also different in type. With this in mind, note that the piping work procedures as well as the related tools and piping materials are partially different than ever before.

  • Page 642: Notes For Work Procedures

    PACD011001C2 Precautions in Servicing The Models with New-type Refrigerant Notes for Work Procedures Brazing connections „ With the new type of refrigerant, much more care must be paid to keep impurities from coming in. In brazing the pipes, be sure to blow the pipe using nitrogen gas. „...
  • Page 643 SERIAL No. EUUMSM01001 Printed in Japan...

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