Mitsubishi Electric PURY-HP72 Service Handbook

R410a
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  • Page 2: Safety Precautions

    Safety Precautions Please read the following safety precautions carefully before installing the unit to ensure safety. Indicates a risk of death or serious injury. Indicates a risk of serious injury or structural damage. Make sure that this manual is passed on to the end user to retain for future reference. Retain this manual for future reference.
  • Page 3 Always replace a fuse with one with the cor- To reduce the risk of electric shock, smoke, rect current rating. The use of improperly and fire due to infiltration of dust and water, rated fuses or a substitution of fuses with properly install all required covers and pan- steel or copper wire may result in bursting, els on the terminal box and control box.
  • Page 4 To reduce the risk of injury from coming in the dealer or qualified personnel. Only use contact with units, install units where they the parts specified by Mitsubishi Electric. are not accessible to people other than Installation by unauthorized personnel or maintenance personnel.
  • Page 5 To reduce the risk of drain water overflow, install the unit horizontally, using a level. [4] Piping Work Piping Work To reduce the risk of injury, including frost To reduce the risk of refrigerant leakage and bites, that may result from being blasted resultant oxygen deprivation, use the flare with refrigerant, use caution when operat- nut with holes that is supplied with the re-...
  • Page 6 To reduce the risk of injury or electric Use properly rated breakers and fuses (in- shock, switch off the main power before verter circuit breaker, local switch <switch + performing electrical work. fuse>, no-fuse breaker). The use of a break- er with a breaking capacity greater than the All electric work must be performed by a specified capacity may cause electric...
  • Page 7 To reduce the risk or malfunction, turn on To reduce the risk of the vacuum pump oil the power at least 12 hours before starting backflowing into the refrigerant cycle and operation, and leave the power turned on causing the refrigerant oil to deteriorate, throughout the operating season.
  • Page 8 Do not use a charging cylinder. The use of a charging cylinder will change the composi- tion of the refrigerant, compromising the unit's performance. Charge the system with an appropriate amount of refrigerant in the liquid phase. Refer to the relevant sections in the manu- als to calculate the appropriate amount of refrigerant to be charged.
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  • Page 10: Table Of Contents

    CONTENTS Chapter 1 Check Before Servicing Preparation for Piping Work........................3 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ....... 5 Working with Refrigerant Piping......................10 Precautions for Wiring ......................... 15 Chapter 2 Restrictions System Configurations ........................19 Types and Maximum Allowable Length of Cables ................
  • Page 11 CONTENTS Error Code Definitions and Solutions: Codes [1000 - 1999]............180 Error Code Definitions and Solutions: Codes [2000 - 2999]............184 Error Code Definitions and Solutions: Codes [3000 - 3999]............191 Error Code Definitions and Solutions: Codes [4000 - 4999]............192 Error Code Definitions and Solutions: Codes [5000 - 5999]............
  • Page 12 Chapter 1 Check Before Servicing Preparation for Piping Work ........................ 3 1-1-1 Read before Servicing ..........................3 1-1-2 Tool Preparation ............................. 4 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil...... 5 1-2-1 Piping Materials ............................5 1-2-2 Storage of Piping Materials........................7 1-2-3 Pipe Processing ............................
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  • Page 14: Preparation For Piping Work

    [1-1 Preparation for Piping Work ] Preparation for Piping Work 1 Check Before Servicing 1-1-1 Read before Servicing 1. Check the type of refrigerant used in the system to be serviced. Refrigerant Type Multi air conditioner for building application CITY MULTI H2i (Hyper Heating Inverter) R2 TKMU-A-H, YKMU-A series : R410A 2.
  • Page 15: Tool Preparation

    [1-1 Preparation for Piping Work ] 1-1-2 Tool Preparation Prepare the following tools and materials necessary for installing and servicing the unit. Tools for use with R410A (Adaptability of tools that are for use with R22 or R407C) 1. To be used exclusively with R410A (not to be used if used with R22 or R407C) Tools/Materials Notes Gauge Manifold...
  • Page 16: Handling And Characteristics Of Piping Materials, Refrigerant, And Refrigerant Oil

    [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil 1-2-1 Piping Materials Do not use the existing piping! 1. Copper pipe materials O-material (Annealed) Soft copper pipes (annealed copper pipes). They can easily be bent with hands. 1/2H-material (Drawn) Hard copper pipes (straight pipes).
  • Page 17 [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] 4. Thickness and refrigerant type indicated on the piping materials Ask the pipe manufacturer for the symbols indicated on the piping material for new refrigerant. 5. Flare processing (O-material (Annealed) and OL-material only) The flare processing dimensions for the pipes that are used in the R410A system are larger than those in the R22 system.
  • Page 18: Storage Of Piping Materials

    [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] 1-2-2 Storage of Piping Materials 1. Storage location Store the pipes to be used indoors. (Warehouse at site or owner's warehouse) If they are left outdoors, dust, dirt, or moisture may infiltrate and contaminate the pipe. 2.
  • Page 19: Characteristics Of The New And Conventional Refrigerants

    [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] 1-2-4 Characteristics of the New and Conventional Refrigerants 1. Chemical property As with R22, the new refrigerant (R410A) is low in toxicity and chemically stable nonflammable refrigerant. However, because the specific gravity of vapor refrigerant is greater than that of air, leaked refrigerant in a closed room will accumulate at the bottom of the room and may cause hypoxia.
  • Page 20: Refrigerant Oil

    [1-2 Handling and Characteristics of Piping Materials, Refrigerant, and Refrigerant Oil ] 1-2-5 Refrigerant Oil 1. Refrigerating machine oil in the HFC refrigerant system HFC type refrigerants use a refrigerating machine oil different from that used in the R22 system. Note that the ester oil used in the system has properties that are different from commercially available ester oil.
  • Page 21: Working With Refrigerant Piping

    [1-3 Working with Refrigerant Piping ] Working with Refrigerant Piping 1-3-1 Pipe Brazing No changes have been made in the brazing procedures. Perform brazing with special care to keep foreign objects (such as oxide scale, water, and dust) out of the refrigerant system. Example: Inside the brazed connection Use of no inert gas during brazing Use of inert gas during brazing...
  • Page 22: Air Tightness Test

    [1-3 Working with Refrigerant Piping ] 1-3-2 Air Tightness Test No changes have been made in the detection method. Note that a refrigerant leak detector for R22 will not detect an R410A leak. Halide torch R22 leakage detector 1. Items to be strictly observed Pressurize the equipment with nitrogen up to the design pressure (4.15MPa[601psi]), and then judge the equipment's air tight- ness, taking temperature variations into account.
  • Page 23: Vacuum Drying

    [1-3 Working with Refrigerant Piping ] 1-3-3 Vacuum Drying (Photo1) 15010H (Photo2) 14010 Recommended vacuum gauge: ROBINAIR 14010 Thermistor Vacuum Gauge 1. Vacuum pump with a reverse-flow check valve (Photo1) To prevent the vacuum pump oil from flowing into the refrigerant circuit during power OFF or power failure, use a vacuum pump with a reverse-flow check valve.
  • Page 24 [1-3 Working with Refrigerant Piping ] 7. Triple Evacuation The method below can also be used to evacuate the system. Evacuate the system to 4,000 microns from both service valves. System manifold gauges must not be used to measure vac- uum.
  • Page 25: Refrigerant Charging

    [1-3 Working with Refrigerant Piping ] 1-3-4 Refrigerant Charging Cylinder with a siphon Cylinder without a siphon Cylin- Cylin- Cylinder color R410A is pink. Refrigerant charging in the liquid state Valve Valve liquid liquid 1. Reasons R410A is a pseudo-azeotropic HFC blend (boiling point R32=-52°C[-62°F], R125=-49°C[-52°F]) and can almost be handled the same way as a single refrigerant, such as R22.
  • Page 26: Precautions For Wiring

    [1-4 Precautions for Wiring ] Precautions for Wiring Control boxes house high-voltage and high-temperature electrical parts. They may still remain energized or hot after the power is turned off. When opening or closing the front cover of the control box, keep out of contact with the internal parts. Before inspecting the inside of the control box, turn off the power, leave the unit turned off for at least 10 minutes, and check that the voltage of the electrolytic capacitor (inverter main circuit) has dropped to 20 VDC or less.
  • Page 27 [1-4 Precautions for Wiring ] 2) Check the wires are securely fastened to the screw terminals. Screw the screws straight down so as not to damage the screw threads. Hold the two round terminals back to back to ensure that the screw will screw down straight. After tightening the screw, mark a line through the screw head, washer, and terminals with a permanent marker.
  • Page 28: Chapter 2 Restrictions

    Chapter 2 Restrictions System Configurations........................19 Types and Maximum Allowable Length of Cables................20 Switch Settings ........................... 21 M-NET Address Settings ........................22 2-4-1 Address Settings List ..........................22 2-4-2 Outdoor Unit Power Jumper Connector Connection................24 2-4-3 Outdoor Unit Centralized Controller Switch Setting ................24 2-4-4 Room Temperature Detection Position Selection .................
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  • Page 30: System Configurations

    [2-1 System Configurations ] System Configurations 2 Restrictions 1. Table of compatible indoor units The table below summarizes the types of indoor units that are compatible with different types of outdoor units. Outdoor Composing units Maximum total capacity Maximum number Types of connectable in- units of connectable indoor...
  • Page 31: Types And Maximum Allowable Length Of Cables

    [2-2 Types and Maximum Allowable Length of Cables ] Types and Maximum Allowable Length of Cables 1. Wiring work (1) Notes 1) Have all electrical work performed by an authorized electrician according to the local regulations and instructions in this man- ual.
  • Page 32: Switch Settings

    [2-3 Switch Settings ] 2) Remote controller wiring MA remote controller ME remote controller Type Number of 2-core cable 2-core cable cores Cable type 2 *2 *4 2 *2 0.3 to 1.25mm 0.3 to 1.25mm [AWG22 to 16] [AWG22 to 16] Cable size (0.75 to 1.25mm (0.75 to 1.25mm...
  • Page 33: M-Net Address Settings

    [2-4 M-NET Address Settings ] M-NET Address Settings 2-4-1 Address Settings List 1. M-NET Address settings (1) Address settings table The need for address settings and the range of address setting depend on the configuration of the system. Unit or controller Sym- Address Setting method...
  • Page 34 [2-4 M-NET Address Settings ] Unit or controller Sym- Address Setting method Factory setting address range setting System Group remote con- 201 to Assign an address that equals the sum of the smallest controller troller group number of the group to be controlled and 200. System remote con- Assign an arbitrary but unique address within the range troller...
  • Page 35: Outdoor Unit Power Jumper Connector Connection

    [2-4 M-NET Address Settings ] 2-4-2 Outdoor Unit Power Jumper Connector Connection There are limitations on the total number of units that are connectable to each refrigerant system. Refer to the DATABOOK for details. System configura- Connection to Power supply unit Group operation Power supply switch connector connection tion...
  • Page 36: Start/Stop Control Of Indoor Units

    [2-4 M-NET Address Settings ] 2-4-5 Start/Stop Control of Indoor Units Each indoor unit (or group of indoor units) can be controlled individually by setting SW 1-9 and 1-10. *4 *5 Setting (SW1) Operation of the indoor unit when the operation is resumed after the unit Function was stopped Power ON/OFF by the...
  • Page 37: Various Control Methods Using The Signal Input/Output Connector On Outdoor Unit

    [2-4 M-NET Address Settings ] 2-4-7 Various Control Methods Using the Signal Input/Output Connector on Outdoor Unit (1) Various connection options Terminal Type Usage Function to be Option used Input Prohibiting cooling/heating operation (thermo OFF) by an external DEMAND (level) CN3D Adapter for input to the outdoor unit.
  • Page 38 [2-4 M-NET Address Settings ] (2) Example of wiring connection CAUTION 1) Wiring should be covered by insulation tube with supplementary insulation. 2) Use relays or switches with IEC or equivalent standard. 3) The electric strength between accessible parts and control circuit should have 2750V or more. (1) CN51 HP-TKMU-A-H model External input...
  • Page 39 [2-4 M-NET Address Settings ] (5) CN3K External input Outdoor unit Relay circuit adapter control board CN3K Preparations in the field Maximum cable length is 10m X : Energy-saving mode command X : Relay Contact rating voltage >= DC15V Contact rating current >= 0.1A Minimum appicable load =<...
  • Page 40: Demand Control Overview

    [2-5 Demand Control Overview ] Demand Control Overview (1) General outline of control Demand control is performed by using the external signal input to the 1-2 and 1-3 pins of CN3D on the outdoor units (OC and OS). Between 2 and 8 steps of demand control is possible by setting Dip SW6-8 on the outdoor units (OC and OS). Dip SW6-8 Demand control switch Input to CN3D*...
  • Page 41: System Connection Example

    [2-6 System Connection Example ] System Connection Example Examples of typical system connection are shown below. Refer to the Installation Manual that came with each device or controller for details. (1) An example of a system to which an MA remote controller is connected System Address start up for in- Connection to the system controller...
  • Page 42 [2-6 System Connection Example ] - 31 - HWE13080...
  • Page 43: Example System With An Ma Remote Controller

    [2-7 Example System with an MA Remote Controller ] Example System with an MA Remote Controller 2-7-1 Single Refrigerant System (Automatic Indoor/Outdoor Address Startup) (1) Sample control wiring Interlock operation with the ventilation unit Leave the male Leave the male Group Group connector on...
  • Page 44 [2-7 Example System with an MA Remote Controller ] remote controllers. (4) Wiring method Set one of the MA remote controllers as a sub controller. 1) Indoor/outdoor transmission line (Refer to the Instruction Manual for the MA remote con- Daisy-chain terminals M1 and M2 of the terminal block troller for the setting method.) for indoor-outdoor transmission line (TB3) on the outdoor Group operation of indoor units...
  • Page 45: Single Refrigerant System With Two Or More Lossnay Units

    [2-7 Example System with an MA Remote Controller ] 2-7-2 Single Refrigerant System with Two or More LOSSNAY Units (1) Sample control wiring Interlock operation with the ventilation unit Leave the male Leave the male Group Group connector on connector on CN41 as it is.
  • Page 46 [2-7 Example System with an MA Remote Controller ] No connection is required. (4) Wiring method 1) Indoor/outdoor transmission line 3) MA remote controller wiring Daisy-chain terminals M1 and M2 of the terminal block Same as 2-7-1 for indoor-outdoor transmission line (TB3) on the outdoor When 2 remote controllers are connected to the sys- units (OC and OS), of the terminal block for indoor-out- door transmission line (TB02) on the main and sub BC...
  • Page 47: Grouped Operation Of Units In Separate Refrigerant Circuits

    [2-7 Example System with an MA Remote Controller ] 2-7-3 Grouped Operation of Units in Separate Refrigerant Circuits (1) Sample control wiring Interlock operation with the ventilation unit Move the male connector Leave the male from CN41 to CN40. Group Group Group connector on...
  • Page 48 [2-7 Example System with an MA Remote Controller ] (4) Wiring method problem with the outdoor unit whose power jumper was moved from CN41 to CN40, central control is not possible, 1) Indoor/outdoor transmission line even if TB7's are daisy-chained.) c) When connecting TB7, only commence after checking that Same as 2-7-2 the voltage is below 20 VDC.
  • Page 49: System With A Connection Of System Controller To Centralized Control Transmission Line

    [2-7 Example System with an MA Remote Controller ] 2-7-4 System with a Connection of System Controller to Centralized Control Transmission Line (1) Sample control wiring An example of a system in which a system controller is connected to the transmission cable for the centralized control system and the power is supplied from the outdoor unit Interlock operation with the ventilation unit...
  • Page 50 [2-7 Example System with an MA Remote Controller ] moved from CN41 to CN40, central control is not possible, (4) Wiring method even if TB7's are daisy-chained.) 1) Indoor/outdoor transmission line c) When connecting TB7, only commence after checking that the voltage is below 20 VDC.
  • Page 51: System With A Connection Of System Controller To Indoor-Outdoor Transmission Line

    [2-7 Example System with an MA Remote Controller ] 2-7-5 System with a Connection of System Controller to Indoor-Outdoor Transmission Line (1) Sample control wiring Interlock operation with the ventilation unit CN41 CN40 Replace Leave the male SW5-1 OFF ON connector on CN41 as it is.
  • Page 52 [2-7 Example System with an MA Remote Controller ] daisy-chained, connect the transmission line for the central control (4) Wiring method system to TB7 of the OC. (Note a).To maintain the central control even during an OC failure or a power failure, connect TB7 on OC 1) Indoor/outdoor transmission line and OS together.
  • Page 53: System With Multiple Bc Controllers

    [2-7 Example System with an MA Remote Controller ] 2-7-6 System with Multiple BC Controllers (1) Sample control wiring Leave the male Move the male connector connector on from CN41 to CN40 CN41 as it is. SW5-1 OFF ON Group Group Group Group...
  • Page 54 [2-7 Example System with an MA Remote Controller ] cuit are not daisy-chained, connect the transmission line (4) Wiring method for the central control system to TB7 of the OC. (Note 1) Indoor/outdoor transmission line a).To maintain the central control even during an OC fail- ure or a power failure, connect TB7 on OC and OS to- Daisy-chain terminals M1 and M2 of the terminal block gether.
  • Page 55 [2-7 Example System with an MA Remote Controller ] (5) Address setting method Pro- Fac- Address tory Unit or controller setting Setting method Notes set- range ting Indoor Main unit IC 01 to 50 Port number setting is re- Assign the smallest address to the main unit in the group.
  • Page 56 [2-7 Example System with an MA Remote Controller ] - 45 - HWE13080...
  • Page 57: Example System With An Me Remote Controller

    [2-8 Example System with an ME Remote Controller ] Example System with an ME Remote Controller 2-8-1 System with a Connection of System Controller to Centralized Control Transmission Line (1) Sample control wiring Interlock operation with the ventilation unit Move the male connector Leave the male from CN41 to CN40.
  • Page 58 [2-8 Example System with an ME Remote Controller ] When 2 remote controllers are connected to the sys- (4) Wiring method 1) Indoor/outdoor transmission line Refer to the section on Switch Setting. Same as 2-7-2 Performing a group operation (including the group Shielded cable connection operation of units in different refrigerant circuits).
  • Page 59: Example System With An Ma And An Me Remote Controller

    [2-9 Example System with an MA and an ME Remote Controller ] Example System with an MA and an ME Remote Controller 2-9-1 System with a Connection of System Controller to Centralized Control Transmission Line (1) Sample control wiring Move the male connector Leave the male from CN41 to CN40.
  • Page 60 [2-9 Example System with an MA and an ME Remote Controller ] Shielded cable connection (3) Maximum allowable length Same as 2-7-2 1) Indoor/outdoor transmission line 2) Transmission line for centralized control Same as 2-7-3 Same as 2-7-4 2) Transmission line for centralized control Shielded cable connection Same as 2-7-4 Same as 2-7-4...
  • Page 61 [2-9 Example System with an MA and an ME Remote Controller ] (5) Address setting method Pro- dress Facto- Unit or controller set- Setting method Notes ry set- dure ting ting range Opera- Main 01 to Assign the smallest address to Assign an address smaller than that of the main unit in the group.
  • Page 62: 2-10 Restrictions On Refrigerant Pipes

    [2-10 Restrictions on Refrigerant Pipes ] 2-10 Restrictions on Refrigerant Pipes 2-10-1 Restrictions on Refrigerant Pipe Length (1) System that requires 16 BC controller ports or fewer <System with only the main BC controller or standard BC con- troller> Outdoor unit *Use a main BC controller when connecting the outdoor units of P144 model or above.
  • Page 63 [2-10 Restrictions on Refrigerant Pipes ] The height difference and the pipe length between BC controller and indoor units [229] [196] [164] [131] [98] [64] [32] [16] [32] [49] Height difference between main BC controller and farthest indoor unit (m[ft]) - 52 - HWE13080...
  • Page 64 [2-10 Restrictions on Refrigerant Pipes ] (2) System that requires more than 16 BC controller ports or with multiple BC controllers <Outdoor unit HP96 model or below> Outdoor unit Branch joint Indoor (CMY-Y202-G2) (CMY-Y102L-G2) (CMY-Y102S-G2) BC controller (sub) BC controller (main) Branch joint (CMY-Y102S-G2) BC controller (sub)
  • Page 65 [2-10 Restrictions on Refrigerant Pipes ] 1) A system that requires more than 16 BC controller ports requires two or three BC controllers (main and sub), and three pipes will be used between the main and the sub BC controllers. 2) When connecting two sub BC controllers, observe the maximum allowable length in the table above.
  • Page 66 [2-10 Restrictions on Refrigerant Pipes ] (3) System that requires more than 16 BC controller ports or with multiple BC controllers <Two-outdoor-unit system> Branch joint (CMY-R100CBK2) Outdoor unit The distributor on the low-pressure side must be placed in the outdoor unit that has a larger capacity Outdoor unit index of the two, regardless of the relative positions of the outdoor units or their addresses.
  • Page 67 If at least one CMB-P1016NU-HB unit is connected, the maximum total capacity of connectable indoor units to a system with two sub controllers is P168 or below. Restrictions on pipe length [ PURY-HP144TSKMU-A-H ] [PURY-HP72, P96TKMU-A-H] [ PURY-HP144YSKMU-A ] [PURY-HP72, P96YKMU-A] 1000...
  • Page 68: Restrictions On Refrigerant Pipe Size

    [2-10 Restrictions on Refrigerant Pipes ] 2-10-2 Restrictions on Refrigerant Pipe Size (1) Between outdoor unit and the first twinning pipe (Part A) Unit : mm [inch] Refrigerant pipe size Connection to outdoor unit and BC controller Outdoor units Low-pressure pipe High-pressure pipe Low-pressure pipe High-pressure pipe...
  • Page 69: Bc Controller Connection Method

    [2-10 Restrictions on Refrigerant Pipes ] 2-10-3 BC Controller Connection Method (1) Size of the pipe that fits the standard BC controller ports HP72 - HP96 models Connection: Brazed connection To outdoor unit BC controller Reducer Branch joint (Model name:CMY-Y102S-G2) Junction pipe kit (Standard (Optional accessory)
  • Page 70 [2-10 Restrictions on Refrigerant Pipes ] 1) To connect P06 - P18 models of indoor units use 2) To connect P72 - P96 models of indoor units (or when the the reducer that is supplied with the BC controller. total capacity of indoor units exceeds P55), use a junction pipe kit and merge the two nozzles.
  • Page 71 [2-10 Restrictions on Refrigerant Pipes ] (2) Size of the pipe that fits the main BC controller ports HP72 - HP192 models Branch joint (Model name:CMY-Y102S-G2) (Optional accessory) Connection: Brazed connection To outdoor unit BC controller (main) Reducer (Standard supplied parts) Junction pipe kit (Model name:CMY-R160-J) (Optional accessory)
  • Page 72 [2-10 Restrictions on Refrigerant Pipes ] (3) Size of the pipe that fits the sub BC controller ports Branch joint (Model name:CMY-Y102S-G2) Connection: Brazed connection (Optional accessory) To Main BC controller Junction pipe kit BC controller (sub) (Model name: CMY-R160-J) (Optional accessory) Reducer (Standard supplied parts)
  • Page 73 [2-10 Restrictions on Refrigerant Pipes ] - 62 - HWE13080...
  • Page 74: Chapter 3 Major Components, Their Functions And Refrigerant Circuits

    Chapter 3 Major Components, Their Functions and Refrigerant Circuits External Appearance and Refrigerant Circuit Components of Outdoor Unit........ 65 3-1-1 External Appearance of Outdoor Unit ....................65 3-1-2 Outdoor Unit Refrigerant Circuits......................66 Outdoor Unit Refrigerant Circuit Diagrams..................67 Functions of the Major Components of Outdoor Unit..............69 Functions of the Major Components of Indoor Unit................
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  • Page 76: External Appearance And Refrigerant Circuit Components Of Outdoor Unit

    [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] External Appearance and Refrigerant Circuit Components of 3 Major Components, Their Functions and Refrigerant Circuits Outdoor Unit 3-1-1 External Appearance of Outdoor Unit (1) PURY-HP72, HP96TKMU-A-H PURY-HP72, HP96YKMU-A Fan guard Fan guard Fin guard Fin guard...
  • Page 77: Outdoor Unit Refrigerant Circuits

    [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] 3-1-2 Outdoor Unit Refrigerant Circuits (1) PURY-HP72, HP96TKMU-A-H PURY-HP72, HP96YKMU-A Low-pressure sensor (63LS) Solenoid valve (SV10) Solenoid valve (SV9) 4-way valve (21S4a) Accumulator High-pressure switch High-pressure sensor (63H1) (63HS1)
  • Page 78: Outdoor Unit Refrigerant Circuit Diagrams

    [3-2 Outdoor Unit Refrigerant Circuit Diagrams ] Outdoor Unit Refrigerant Circuit Diagrams (1) PURY-HP72, HP96TKMU-A-H(-BS) PURY-HP72, HP96YKMU-A(-BS) 21S4a Solenoid valve block SV11 SV4d SV4a SV4b ST17 63H1 63HS1 CV7a SV10 LEV5a 63LS SV1a TH11 CV3a CV2a CV5a ST18 CV8a CV9a...
  • Page 79 [3-2 Outdoor Unit Refrigerant Circuit Diagrams ] (2) PURY-HP144, HP192TSKMU-A-H(-BS) PURY-HP144, HP192YSKMU-A(-BS) 21S4a Solenoid valve block SV11 SV4d SV4a SV4b ST17 63H1 63HS1 CV7a SV10 LEV5a 63LS SV1a TH11 CV3a CV2a CV5a ST18 CV8a CV9a SV5b COMP CV6a CV4a LEV4 21S4a Solenoid valve block SV11...
  • Page 80: Functions Of The Major Components Of Outdoor Unit

    [3-3 Functions of the Major Components of Outdoor Unit ] Functions of the Major Components of Outdoor Unit Part Symbols Notes Usage Specifications Check method name (functions) Com- Adjusts the amount of circulating HP72, HP96 models pressor (Comp1) refrigerant by adjusting the operat- Low-pressure shell scroll ing frequency based on the oper- compressor...
  • Page 81 [3-3 Functions of the Major Components of Outdoor Unit ] Part Symbols Notes Usage Specifications Check method name (functions) Thermis- 1) Detects outdoor air tempera- Degrees Celsius Resistance check (Outdoor tem- ture = 15k perature) 2) Controls fan operation = 3460 0/80 R = 15 3460...
  • Page 82 [3-3 Functions of the Major Components of Outdoor Unit ] Part Symbols Notes Usage Specifications Check method name (functions) 4-way 21S4a Changeover between heating and AC208-230V Continuity check valve cooling Dead: cooling cycle with a tester Live: heating cycle Fan mo- FAN motor Regulates the heat exchanger ca- (TKMU)
  • Page 83: Functions Of The Major Components Of Indoor Unit

    [3-4 Functions of the Major Components of Indoor Unit ] Functions of the Major Components of Indoor Unit Part Symbol Notes Usage Specification Check method Name (functions) Linear 1) Adjusts superheat at the DC12V Refer to the section expan- Opening of stepping motor "Continuity Test with a indoor heat exchanger sion valve...
  • Page 84: External Appearance And Refrigerant Circuit Components Of Bc Controller

    [3-5 External Appearance and Refrigerant Circuit Components of BC Controller ] External Appearance and Refrigerant Circuit Components of BC Controller 1. CMB-P NU-G, GA, HA (1) Front Liquid pipe (Indoor unit side) Gas pipe (Indoor unit side) (2) Rear view <G type> TH11 SVM1 LEV3...
  • Page 85 [3-5 External Appearance and Refrigerant Circuit Components of BC Controller ] (3) Rear view <GA type> TH16 LEV2 LEV3 TH11 LEV1 SVM2 Gas/Liquid separator Tube in tube heat exchanger SVM1 TH12 TH15 (4) Rear view <HA type> Gas/Liquid separator LEV3 LEV1 LEV2 SVM2...
  • Page 86 [3-5 External Appearance and Refrigerant Circuit Components of BC Controller ] 2. CMB-P NU-GB, HB (1) Front Liquid pipe (Indoor unit side) Gas pipe (Indoor unit side) (2) Rear view TH12 LEV3 TH15 - 75 - HWE13080...
  • Page 87: Bc Controller Refrigerant Circuit Diagrams

    [3-6 BC Controller Refrigerant Circuit Diagrams ] BC Controller Refrigerant Circuit Diagrams (1) CMB-P104 - P1016NU-G SVC/SVA/SVB Solenoid valve block TH15 Gas/Liquid separator LEV3 TH12 HIC-B TH11 LEV1 TH16 HIC-A Check valve block SVM1 - 76 - HWE13080...
  • Page 88 [3-6 BC Controller Refrigerant Circuit Diagrams ] (2) CMB-P108, P1010, P1013, P1016NU-GA (main) SVC/SVA/SVB Solenoid valve block TH15 Gas/Liquid LEV3 separator SVM2 TH12 HIC-B TH11 LEV1 TH16 HIC-A LEV2 Check valve block SVM1 (3) CMB-P104, P108NU-GB (sub) SVC/SVA/SVB Solenoid valve block TH12 TH15 LEV3...
  • Page 89 [3-6 BC Controller Refrigerant Circuit Diagrams ] (4) CMB-P1016V-HA (main) SVA,SVB,SVC TH15 Gas/Liquid SVM2 separator LEV3 SVM2b TH12 HIC-B TH11 LEV1 TH16 HIC-A LEV2 SVM1 SVM1b (5) CMB-P1016NU-HB (sub) SVC/SVA/SVB Solenoid valve block TH12 TH15 LEV3 HIC-C Check valve block - 78 - HWE13080...
  • Page 90: Functions Of The Major Components Of Bc Controller

    [3-7 Functions of the Major Components of BC Controller ] Functions of the Major Components of BC Controller (1) G type Symbols Part Part name Usage Specifications Check method (functions) code Pressure 1) Detects high pressure Pressure sensor (High pres- 2) LEV control 0~4.15 MPa [601psi] Vout 0.5~3.5V...
  • Page 91 [3-7 Functions of the Major Components of BC Controller ] (2) GA type Symbols Part Part name Usage Specifications Check method (functions) code Pressure 1) Detects high pressure Pressure sensor (High pres- 2) LEV control 0~4.15 MPa [601psi] Vout 0.5~3.5V sure side) 1 2 3 0.071V/0.098 MPa [14psi]...
  • Page 92 [3-7 Functions of the Major Components of BC Controller ] (3) GB type Symbols Part Part name Usage Specifications Check method (functions) code Thermistor TH12 LEV control (Superheat) (Bypass = 15k outlet tem- = 3460 0/80 perature) R = 15 3460 TH15 LEV control (Superheat)
  • Page 93 [3-7 Functions of the Major Components of BC Controller ] (4) HA type Symbols Part Part name Usage Specifications Check method (functions) code Pressure 1) Detects high pressure Pressure sensor (High pres- 2) LEV control 0~4.15 MPa [601psi] Vout 0.5~3.5V sure side) 1 2 3 0.071V/0.098 MPa [14psi]...
  • Page 94 [3-7 Functions of the Major Components of BC Controller ] (5) HB type Symbols Part Part name Usage Specifications Check method (functions) code Thermistor TH12 LEV control (Superheat) (Bypass = 15k outlet tem- = 3460 0/80 perature) R = 15 3460 TH15 LEV control (Superheat)
  • Page 95 [3-7 Functions of the Major Components of BC Controller ] - 84 - HWE13080...
  • Page 96: Chapter 4 Electrical Components And Wiring Diagrams

    Chapter 4 Electrical Components and Wiring Diagrams Outdoor Unit Circuit Board Arrangement..................87 4-1-1 Outdoor Unit Control Box........................87 4-1-2 Transformer Box ........................... 89 Outdoor Unit Circuit Board Components ..................90 4-2-1 Control Board............................90 4-2-2 M-NET Board (Transmission Power Supply Board) ................91 4-2-3 INV Board .............................
  • Page 97 - 86 - HWE13080...
  • Page 98: Outdoor Unit Circuit Board Arrangement

    (Inverter main circuit) is 20VDC or below. (It takes about 10 minutes to discharge electricity after the power supply is turned off.) 1. PURY-HP72, HP96TKMU-A-H Rush current FAN INV board...
  • Page 99 [4-1 Outdoor Unit Circuit Board Arrangement ] 2. PURY-HP72, HP96YKMU-A Capacitor Electromagnetic relay Rush current protection resistor (72C) (C100) (R1, R5) Note 2 Control board FAN INV board DC reactor (DCL) Noise filter Note 2 M-NET board Terminal block for power supply...
  • Page 100: Transformer Box

    [4-1 Outdoor Unit Circuit Board Arrangement ] 4-1-2 Transformer Box (1) PURY-HP72, HP96YKMU-A Transformer (T03) Transformer (T02) - 89 - HWE13080...
  • Page 101: Outdoor Unit Circuit Board Components

    [4-2 Outdoor Unit Circuit Board Components ] Outdoor Unit Circuit Board Components 4-2-1 Control Board (208/230 VAC) /Base heater output *For information about the display of SW4 function settings, refer to the following page(s). [5-1-1 Outdoor Unit Switch Func- tions and Factory Settings](page 117) - 90 - HWE13080...
  • Page 102: M-Net Board (Transmission Power Supply Board)

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-2 M-NET Board (Transmission Power Supply Board) CNIT CNS2 CN102 12VDC Input Transmission line Power supply output for centralized input/output for control system (30VDC) 5VDC Input centralized control CN04 Indoor/outdoor transmission line Power supply system (30VDC) Bus voltage input input/output (30VDC)
  • Page 103: Inv Board

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-3 INV Board (1) PURY-HP72, HP96TKMU-A-H 1) Faston terminals have a locking function. Make sure the cable heads are securely locked in place. Press the tab on the ter- minals to remove them.
  • Page 104 [4-2 Outdoor Unit Circuit Board Components ] (2) PURY-HP72, HP96YKMU-A 1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components. Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less.
  • Page 105: Fan Board

    4-2-4 Fan Board (1) PURY-HP72, HP96TKMU-A-H 1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components. Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less.
  • Page 106 [4-2 Outdoor Unit Circuit Board Components ] (2) PURY-HP72, HP96YKMU-A 1) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components. Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the capacitor voltage (inverter main circuit) has dropped to 20 VDC or less.
  • Page 107: Noise Filter

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-5 Noise Filter (1) PURY-HP72, HP96TKMU-A-H F003 CN110 TB31 Fuse CN72C Power supply detection Bus voltage output (P) Ground 250 VAC 6.3A T 72C drive input signal output X001 Electromagnetic relay (72C) CNR1...
  • Page 108 [4-2 Outdoor Unit Circuit Board Components ] (2) PURY-HP72, HP96YKMU-A Output Output (Rectified L2-L3 current) (Rectified L2-L3 current) Input Surge absorber circuit Surge absorber circuit Short circuit Short circuit Grounding F1,F2,F3,F4 Fuse 250VAC 6.3A Grounding CN1A Input CN1B TB21 TB22...
  • Page 109: Outdoor Unit Electrical Wiring Diagrams

    [4-3 Outdoor Unit Electrical Wiring Diagrams ] Outdoor Unit Electrical Wiring Diagrams (1) PURY-HP72, HP96TKMU-A-H - 98 - HWE13080...
  • Page 110 [4-3 Outdoor Unit Electrical Wiring Diagrams ] (2) PURY-HP72, HP96YKMU-A - 99 - HWE13080...
  • Page 111: Transmission Booster Electrical Wiring Diagrams

    [4-4 Transmission Booster Electrical Wiring Diagrams ] Transmission Booster Electrical Wiring Diagrams Terminal block for power supply (TB1) 250V 2A Red Red Red Black White White Green/Yellow AC208V/230V Varistor Noise filter Black White White White White Varistor Green Black Stabilized power supply Blue Black Grounding...
  • Page 112: Bc Controller Circuit Board Arrangement

    [4-5 BC Controller Circuit Board Arrangement ] BC Controller Circuit Board Arrangement 4-5-1 BC Controller Control Box 1. CMB-P1016NU-G, GA, HA Transformer Terminal block for power supply Terminal block for transmission line Relay board BC board - 101 - HWE13080...
  • Page 113: Bc Controller Circuit Board Components

    [4-6 BC Controller Circuit Board Components ] BC Controller Circuit Board Components 4-6-1 BC Board - 102 - HWE13080...
  • Page 114: Four-Relay Board

    [4-6 BC Controller Circuit Board Components ] 4-6-2 Four-Relay Board 4-6-3 Ten-Relay Board - 103 - HWE13080...
  • Page 115: Bc Controller Electrical Wiring Diagrams

    [4-7 BC Controller Electrical Wiring Diagrams ] BC Controller Electrical Wiring Diagrams (1) CMB-P104NU-G model - 104 - HWE13080...
  • Page 116 [4-7 BC Controller Electrical Wiring Diagrams ] (2) CMB-P105,106NU-G models - 105 - HWE13080...
  • Page 117 [4-7 BC Controller Electrical Wiring Diagrams ] (3) CMB-P108,1010NU-G models - 106 - HWE13080...
  • Page 118 [4-7 BC Controller Electrical Wiring Diagrams ] (4) CMB-P1013,1016NU-G models - 107 - HWE13080...
  • Page 119 [4-7 BC Controller Electrical Wiring Diagrams ] (5) CMB-P108,1010NU-GA models - 108 - HWE13080...
  • Page 120 [4-7 BC Controller Electrical Wiring Diagrams ] (6) CMB-P1013,1016NU-GA models LEV3 LEV2 - 109 - HWE13080...
  • Page 121 [4-7 BC Controller Electrical Wiring Diagrams ] (7) CMB-P104NU-GB model - 110 - HWE13080...
  • Page 122 [4-7 BC Controller Electrical Wiring Diagrams ] (8) CMB-P108NU-GB model - 111 - HWE13080...
  • Page 123 [4-7 BC Controller Electrical Wiring Diagrams ] (9) CMB-P1016NU-HA model - 112 - HWE13080...
  • Page 124 [4-7 BC Controller Electrical Wiring Diagrams ] (10) CMB-P1016NU-HB model - 113 - HWE13080...
  • Page 125 [4-7 BC Controller Electrical Wiring Diagrams ] - 114 - HWE13080...
  • Page 126: Chapter 5 Control

    Chapter 5 Control Dipswitch Functions and Factory Settings ..................117 5-1-1 Outdoor Unit Switch Functions and Factory Settings ................. 117 5-1-2 Indoor Unit Switch Functions and Factory Settings ................121 5-1-3 Remote Controller Switch Functions and Factory Settings..............122 5-1-4 BC Controller Switch Settings......................
  • Page 127 - 116 - HWE13080...
  • Page 128: Dipswitch Functions And Factory Settings

    [5-1 Dipswitch Functions and Factory Settings ] Dipswitch Functions and Factory Settings 5 Control 5-1-1 Outdoor Unit Switch Functions and Factory Settings (1) Control board Function according to switch setting Units that require Switch Function Switch setting timing switch setting (Note 2) Unit address set- Set to 00 or 51-100 with the dial switch...
  • Page 129 [5-1 Dipswitch Functions and Factory Settings ] Function according to switch setting Units that require Switch Function Switch setting timing switch setting OFF (LED3 Unlit) ON (LED3 Lit) (Note 2) Refer to the following page(s). [9 LED Sta- 1-10 SW6-10: Self-diagnosis/operation monitor tus Indicators on the Outdoor Unit Circuit Anytime after power on...
  • Page 130 [5-1 Dipswitch Functions and Factory Settings ] (2) INV board 1) PURY-HP72, HP96YKMU-A Functions are switched with the following connector. Function according to connec- Connector Function Setting timing Enabled Disabled CN6 short- Enabling/disabling the following error Error detec- Error detec-...
  • Page 131 [5-1 Dipswitch Functions and Factory Settings ] (3) Fan INV board Function according to switch setting Switch Function Switch setting timing Enabling/Disabling no-load operation No-load oper- No-load oper- Anytime after power on No-load operation will continue for approxi- ation disabled ation enabled mately 30 seconds, and then the unit will come to an abnormal stop.
  • Page 132: Indoor Unit Switch Functions And Factory Settings

    [5-1 Dipswitch Functions and Factory Settings ] 5-1-2 Indoor Unit Switch Functions and Factory Settings (1) Dipswitches 1) SW1,3 Function according to switch setting Switch setting timing Switch Function Notes Set to ON (built-in sensor on the remote controller) Room temperature Built-in sensor on Indoor unit inlet on All Fresh (PEFY-VMH-F) model units...
  • Page 133: Remote Controller Switch Functions And Factory Settings

    [5-1 Dipswitch Functions and Factory Settings ] 5-1-3 Remote Controller Switch Functions and Factory Settings (1) MA remote controller (PAR-20MAU) The SW is located at the bottom of the remote controller under the cover. Operate the switches to perform the remote con- troller main/sub setting or other function settings.
  • Page 134: Bc Controller Switch Settings

    [5-1 Dipswitch Functions and Factory Settings ] (2) ME remote controller (PAR-F27MEA-US) Set the address of the remote controller with the rotary switch. Rotary switch 10's digit 1's digit (left) (right) Remote controller unit Example: In case of address 108 Address setting range Setting method Main remote controller...
  • Page 135: Outdoor Unit Control

    [5-2 Outdoor Unit Control ] Outdoor Unit Control 5-2-1 Overview The outdoor units are designated as OC and OS in the order of capacity from large to small (if two or more units have the same capacity, in the order of address from small to large). The setting of outdoor unit can be verified by using the self-diagnosis switch (SW4).
  • Page 136: Refrigerant Bypass Control

    [5-2 Outdoor Unit Control ] 5-2-5 Refrigerant Bypass Control Bypass solenoid valves, which bypass the high- and low- pressure sides, perform the following functions. (1) Bypass solenoid valve (SV1a) (ON = Open) SV1a Operation When starting-up the compressor of each ON for 4 minutes.
  • Page 137: Frequency Control

    [5-2 Outdoor Unit Control ] 5-2-6 Frequency Control Depending on the capacity required, the frequency of the compressor is controlled to keep constant evaporation temperature (0°C [32°F] = 0.71 MPa [103 psi]) during cooling operation, and condensing temperature (49°C [120°F] = 2.88 MPa [418 psi]) during heating operation.
  • Page 138: Defrost Operation Control

    [5-2 Outdoor Unit Control ] 5-2-7 Defrost Operation Control (1) Starting the defrost operation The defrost cycle will start when all of the three conditions (outside temperature, cumulative compressor operation time, and pipe temperature) under <Condition 1>, <Condition 2>, or <Condition 3> are met. Condition 1 Condition 2 Condition 3...
  • Page 139 [5-2 Outdoor Unit Control ] (2) Defrost operation Outdoou unit Compressor frequency Model Compressor frequency HP72 model 107Hz HP96 model 107Hz Outdoor unit fan Stopped SV1a ON (open) SV5b ON (closed) 21S4a OFF (closed) BC controller LEV1 G type: 4000, GA type: 6000 LEV3 G type: 1000, GA type: 2000 GB, HB type: 60 (full closed)
  • Page 140: On-Defrost Operation Control

    [5-2 Outdoor Unit Control ] 5-2-8 ON-defrost operation control (1) ON-defrost operation start conditions On-defrost operation will start when all the conditions listed in the table below are met (outside temperature, cumulative com- pressor operation time, and piping temperature). SW4 (848) must be set to ON to perform ON-defrost operation. Single unit Combination units Outside temperature (TH7)
  • Page 141: Oil Recovery During Compressor Operation At Low Frequency

    [5-2 Outdoor Unit Control ] 5-2-10 Oil recovery during compressor operation at low frequency Oil collection operation is performed after units have been operated continuously for an extended period at the compressor frequency F as listed in the table below (Condition 1). It is performed by fixing the compressor frequency F to the value listed below (Condition 2) for a maximum of four minutes.
  • Page 142: Compressor Discharge Superheat Control (Expansion Valve )

    [5-2 Outdoor Unit Control ] 5-2-12 Compressor discharge superheat control (expansion valve <LEV4>) Compressor discharge superheat of OC and OS is controlled separately. Compressor discharge superheat (calculated based on the compressor discharge temperature (TH4) and high pressure (63HS)) is controlled by LEV4 every 30 seconds to stay within the certain target ranges that corresponds to given compressor frequencies.
  • Page 143 [5-2 Outdoor Unit Control ] (2) Two-outdoor-unit system Initial startup mode starts. The compressor on the OC starts up. 60Hz The total operating load of the indoor unit after 5 minutes of operation is P96 or above. (*1 Qj The compressor on the OC starts up. The compressor on the OC remains in operation, and the compressor on the OS starts up.
  • Page 144: Emergency Operation Mode

    [5-2 Outdoor Unit Control ] 5-2-15 Emergency Operation Mode 1. Problems with the outdoor unit The HP144 through HP192 models of unit have a mode that allows the outdoor unit to perform an emergency operation when the other outdoor unit in the system malfunctions. This mode can be started by performing an error reset via the remote controller.
  • Page 145 [5-2 Outdoor Unit Control ] (2) Ending the emergency operation 1) End conditions When one of the following conditions is met, emergency operation stops, and the unit makes an error stop. When the integrated operation time of compressor in cooling mode has reached four hours. When the integrated operation time of compressor in heating mode has reached two hours.
  • Page 146: Unit Control Scheme

    [5-2 Outdoor Unit Control ] 5-2-16 Unit Control Scheme The control system configuration for the PURY models is shown in the chart below. Daisy-chained Non-polar 2-wire Data signal exchange non-polar 2-wire serial communication between system equipment method transmission line 16-bit CPU Calculation, processing microcomputer operation processing...
  • Page 147: Refrigerant Circuits And Refrigerant Cycle Diagrams

    [5-2 Outdoor Unit Control ] 5-2-17 Refrigerant Circuits and Refrigerant Cycle Diagrams Operation Schematic diagram of refrigerant circuit Schematic diagram of refrigerating cycle Two-phase status Liquid 4-way valve Check valve Selector valve Low- Pressure pressure Low-pressure two-phase pipe Low-pressure Liquid Cooling Heat exchanger only...
  • Page 148: Operation Mode

    [5-2 Outdoor Unit Control ] 5-2-18 Operation Mode (1) Indoor unit operation mode The operation mode can be selected from the following 6 modes using the remote controller. Cooling mode Heating mode Dry mode Automatic cooling/heating mode Fan mode Stopping mode (2) Outdoor unit operation mode Cooling only mode All indoor units in operation are in cooling mode.
  • Page 149: Demand Control

    [5-2 Outdoor Unit Control ] 5-2-19 Demand Control Cooling/heating operation can be prohibited (Thermo-OFF) by an external input to the indoor units. When DIP SW6-8 is set to ON, the 4-step DEMAND control is enabled. Eight-step demand control is possible in the system with two outdoor units. For details, refer to the following page(s).
  • Page 150: Bc Controller Control

    [5-3 BC Controller Control ] BC Controller Control 1. Control of SV A, SV B, and SV A, SV B, and SV C turn on or off depending on the operation mode of the branch. Mode Cooling Heating Stopped Defrost SV A Port SV B...
  • Page 151: Operation Flowcharts

    [5-4 Operation Flowcharts ] Operation Flowcharts 5-4-1 Operation Sequence Flowchart (1) Indoor unit (cooling, heating, dry, fan mode) Start Normal operation Error Breaker Stop turned on Operation SW turned on *Note 1 1. Protection function self-holding cancelled. 2. Indoor unit LEV fully closed. *Note 2 Remote controller Error mode...
  • Page 152 [5-4 Operation Flowcharts ] (2) Outdoor unit (cooling only, heating only, cooling main and heating main modes) Start Normal operation Error Breaker turned on Unit in the stopped state "HO" / "PLEASE WAIT" blinks on the remote controller *Note 1 Indoor units registered to the remote controller...
  • Page 153 [5-4 Operation Flowcharts ] (3) BC controller (cooling only, heating only, cooling main and heating main modes) Start Normal operation Error Breaker turned on Unit in the stopped state Operation command 1. Determination of operation mode Protection function (Cooling only, Heating only, Mixture self-holding cancelled.
  • Page 154: Actions Performed In Different Modes

    [5-4 Operation Flowcharts ] 5-4-2 Actions Performed in Different Modes (1) Cooling operation Cooling operation Normal operation During test run mode 4-way valve OFF Unit in the stopped state Indoor unit fan *Note 1 operation Test run mode Thermostat 3-minute restart prevention 1.
  • Page 155 [5-4 Operation Flowcharts ] (2) Heating operation Normal operation Heating operation Defrost operation *Note 1,2 Unit in the stopped state Defrost operation During test run mode 4-way valve ON 4-way valve OFF Test run mode 1. Indoor unit fan stop 2.
  • Page 156 [5-4 Operation Flowcharts ] (3) Dry operation Dry operation Normal operation Thermostat ON 4-way valve OFF Unit in the stopped state Test run mode *Note 2 Thermostat ON Suction temperature 18 C[64 F] *Note 1 1. Indoor unit fan stop 1.
  • Page 157 [5-4 Operation Flowcharts ] - 146 - HWE13080...
  • Page 158: Chapter 6 Test Run

    Chapter 6 Test Run Read before Test Run........................149 MA and ME Remote Controller Functions and Specifications ............. 150 6-2-1 Function/Specification Comparison ....................150 6-2-2 Local Remote Controller Selection Tips....................150 Making the Group and Interlock Settings from an ME Remote Controller ........151 6-3-1 Overview .............................
  • Page 159 - 148 - HWE13080...
  • Page 160: Read Before Test Run

    [6-1 Read before Test Run ] Read before Test Run 6 Test Run (1) Check for refrigerant leak and loose cables and connectors. (2) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
  • Page 161: Ma And Me Remote Controller Functions And Specifications

    [6-2 MA and ME Remote Controller Functions and Specifications ] MA and ME Remote Controller Functions and Specifications There are two types of remote controllers: ME remote controller, which is connected on the indoor-outdoor transmission line, and MA remote controller, which is connected to each indoor unit. 6-2-1 Function/Specification Comparison *1*2...
  • Page 162: Making The Group And Interlock Settings From An Me Remote Controller

    [6-3 Making the Group and Interlock Settings from an ME Remote Controller ] Making the Group and Interlock Settings from an ME Remote Controller 6-3-1 Overview Make the following settings to perform a group operation of units that are connected to different outdoor units or to manually set up the indoor/outdoor unit address.
  • Page 163 [6-3 Making the Group and Interlock Settings from an ME Remote Controller ] (A) Group Settings (B) Interlock Settings Bring up the Group Setting window. Bring up the Interlock Setting window. -Press and hold buttons [FILTER] and [LOUVER] -Press button [MODE] to bring up the following display.
  • Page 164: Address Search

    [6-3 Making the Group and Interlock Settings from an ME Remote Controller ] 6-3-3 Address Search To search for the address of indoor units that have been entered into the remote controller, follow steps (A) To search group settings (B) Interlock setting search After performing step , proceed as follows: Bring up the Group Setting window.
  • Page 165: Address Deletion

    [6-3 Making the Group and Interlock Settings from an ME Remote Controller ] 6-3-4 Address Deletion The addresses of the indoor units that have been entered into the remote controller can be deleted by deleting the group settings. The interlock settings between units can be deleted by deleting the interlock settings. Follow the steps in section 6-3-3 “Address Search”...
  • Page 166: Selecting Remote Controller Functions From An Me Remote Controller

    [6-4 Selecting Remote Controller Functions from an ME Remote Controller ] Selecting Remote Controller Functions from an ME Remote Controller In the remote controller function selection mode, the settings for three types of functions can be made or changed as necessary. 1) Operation mode display selection mode (Display or non-display of COOL/HEAT during automatic operation mode) When the automatic operation mode is selected, the indoor unit will automatically perform a cooling or heating operation based on the room temperature.
  • Page 167 [6-4 Selecting Remote Controller Functions from an ME Remote Controller ] [Operation Procedures] 1. Press the [ON/OFF] button on the remote controller to bring the unit to a stop. The display will appear as shown in the previous page (Normal display).
  • Page 168: Making Interlock Settings From An Ma Remote Controller

    [6-5 Making Interlock Settings from an MA Remote Controller ] Making Interlock Settings from an MA Remote Controller LOSSNAY interlock setting (Make this setting only when necessary.) 6-5-1 MA Remote Controller (PAR-21MAAU) * When the upper controller is connected, make the setting using the upper controller. NOTE: When using LOSSNAY units in conjunction, interlock the addresses of all indoor units within the group and address of LOSSNAY units.
  • Page 169 [6-5 Making Interlock Settings from an MA Remote Controller ] < 2. Search Procedures > To search for the LOSSNAY unit that is interlocked with a particular indoor unit, enter the address of the indoor unit into the remote controller that is connected to it.
  • Page 170: Changing The Room Temperature Detection Position

    [6-6 Changing the Room Temperature Detection Position ] Changing the Room Temperature Detection Position 1. Selecting the position of temperature detection (Factory setting: SW1-1 on the controller board on the indoor unit is set to OFF.) To use the built-in sensor on the remote controller, set the SW1-1 on the controller board on the indoor unit to ON. Some models of remote controllers are not equipped with a built-in temperature sensor.
  • Page 171: Test Run Method

    [6-7 Test Run Method ] Test Run Method 6-7-1 MA Remote Controller (PAR-21MAAU) The figure shows an MA remote controller (PAR-21MAAU). ON/OFF button Set Temperature buttons Down Fan Speed button TIME SUN MON TUE WED THU FRI SAT TIMER AFTER AFTER ERROR CODE FUNCTION...
  • Page 172: Operation Characteristics And Refrigerant Charge

    [6-8 Operation Characteristics and Refrigerant Charge ] Operation Characteristics and Refrigerant Charge It is important to have a clear understanding of the characteristics of refrigerant and the operating characteristics of air conditioners before attempting to adjust the refrigerant amount in a given system. The following table shows items of particular importance.
  • Page 173: The Amount Of Refrigerant To Be Added

    [6-9 Evaluating and Adjusting Refrigerant Charge ] 6-9-3 The Amount of Refrigerant to Be Added The amount of refrigerant that is shown in the table below is factory-charged to the outdoor units. The amount necessary for extended pipe (field piping) is not included and must be added on site. Outdoor unit model HP72 HP96...
  • Page 174 [6-9 Evaluating and Adjusting Refrigerant Charge ] 1) Maximum refrigerant charge There is a limit to the amount of refrigerant that can be charged into a unit. Regardless of the amount yielded by the formula above, observe the maximum refrigerant charge in the table below. Total index of the outdoor units HP72 HP96...
  • Page 175: Refrigerant Charge Adjustment Mode

    [6-9 Evaluating and Adjusting Refrigerant Charge ] 6-9-4 Refrigerant Charge Adjustment Mode Follow the procedures below to add or extract refrigerant as necessary depending on the operation mode. When the function switch (SW4 (922)) on the main board on the outdoor unit (OC only) is turned to ON, the unit goes into the refrigerant amount adjust mode, and the following sequence is followed.
  • Page 176 [6-9 Evaluating and Adjusting Refrigerant Charge ] Start Turn on SW4 (922) on the OC. Operation of the Refrigerant Amount Adjust Mode Put all indoor units in the test run mode When the unit is the refrigerant amount adjust mode, the LEV on the and run the units in cooling mode.
  • Page 177: 6-10 The Following Symptoms Are Normal

    [6-10 The Following Symptoms Are Normal ] 6-10 The Following Symptoms Are Normal Remote controller Symptoms Cause display The indoor unit does not start "Cooling (heating)" The unit cannot perform a heating (cooling) operation when other indoor after starting cooling (heating) icon blinks on the units on the same refrigerant system, are performing a cooling (heating) operation.
  • Page 178: Standard Operation Data (Reference Data)

    [6-11 Standard Operation Data (Reference Data) ] 6-11 Standard Operation Data (Reference Data) 6-11-1 Single Unit (Standard) Outdoor unit model PURY-HP72T(Y)KMU-A(-H) PURY-HP96T(Y)KMU-A(-H) BC controller model CMB-P104NU-G CMB-P104NU-G Indoor 26.7°C/19.4°C [80 °F/67 °F] 26.7°C/19.4°C [80 °F/67 °F] Ambient temperature DB/WB (cooling) Outdoor 35°C/−...
  • Page 179: Dual Unit Combination (Standard)

    [6-11 Standard Operation Data (Reference Data) ] 6-11-2 Dual Unit Combination (Standard) Packaged unit model PURY-HP144T(Y)SKMU-A(-H) Outdoor unit model PURY-HP72T(Y)KMU-A(-H) PURY-HP72T(Y)KMU-A(-H) BC controller model CMB-P108NU-GA Indoor 26.7°C/19.4°C [80 °F/67 °F] Ambient temperature DB/WB (cooling) Outdoor 35°C/− [95 °F/−] Indoor 21.1°C/− [70 °F/-] Ambient temperature DB/WB (heating)
  • Page 180 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-HP192T(Y)SKMU-A(-H) Outdoor unit model PURY-HP96T(Y)KMU-A(-H) PURY-HP96T(Y)KMU-A(-H) BC controller model CMB-P108NU-GA Indoor 26.7°C/19.4°C [80 °F/67 °F] Ambient temperature DB/WB (cooling) Outdoor 35°C/− [95 °F/−] Indoor 21.1°C/− [70 °F/-] Ambient temperature DB/WB (heating) Outdoor 8.3°C/6.1°C [47 °F/43 °F]...
  • Page 181 [6-11 Standard Operation Data (Reference Data) ] - 170 - HWE13080...
  • Page 182: Chapter 7 Troubleshooting Using Error Codes

    Chapter 7 Troubleshooting Using Error Codes Error Code and Preliminary Error Code Lists ................175 Error Code Definitions and Solutions: Codes [0 - 999] ..............179 7-2-1 Error Code [0403] ..........................179 Error Code Definitions and Solutions: Codes [1000 - 1999] ............180 7-3-1 Error Code [1102] ..........................
  • Page 183 7-6-27 Error Code [4260] (TKMU)........................209 7-6-28 Error Code [4260] (YKMU)........................209 Error Code Definitions and Solutions: Codes [5000 - 5999] ............210 7-7-1 Error Codes [5101, 5102, 5103, 5104]....................210 7-7-2 Error Codes [5104, 5105, 5106, 5107, 5109, 5111]................211 7-7-3 Error Code [5110] (TKMU)........................
  • Page 184 7-9-2 Error Code [7101] ..........................240 7-9-3 Error Code [7102] ..........................241 7-9-4 Error Code [7105] ..........................242 7-9-5 Error Code [7106] ..........................242 7-9-6 Error Code [7107] ..........................243 7-9-7 Error Code [7110] ..........................244 7-9-8 Error Code [7111] ..........................244 7-9-9 Error Code [7113] ..........................
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  • Page 186: Error Code And Preliminary Error Code Lists

    [7-1 Error Code and Preliminary Error Code Lists ] Error Code and Preliminary Error Code Lists 7 Troubleshooting Using Error Codes Searched unit Error Prelimi- (prelim- Error nary inary) Error code definition Notes Code error detail code code 4300 Serial communication error/Panel communication 0403 (page 179) 4305...
  • Page 187 [7-1 Error Code and Preliminary Error Code Lists ] Searched unit Error Prelimi- (prelim- Error nary inary) Error code definition Notes Code error detail code code Return air temperature (page 210) (TH21) Temperature sensor 5101 1202 fault OA processing unit inlet (page 210) temperature (TH4) Indoor unit pipe tempera-...
  • Page 188 [7-1 Error Code and Preliminary Error Code Lists ] Searched unit Error Prelimi- (prelim- Error nary inary) Error code definition Notes Code error detail code code Backup operation [115] ACCT sensor fault (page 215) [116] DCCT sensor fault (page 216) 5301 4300 [117]...
  • Page 189 [7-1 Error Code and Preliminary Error Code Lists ] Searched unit Error Prelimi- (prelim- Error nary inary) Error code definition Notes Code error detail code code Connection information signal transmission/recep- 7110 (page 244) tion error 7111 Remote controller sensor fault (page 244) Function setting error (improper connection of CN- 7113...
  • Page 190: Error Code Definitions And Solutions: Codes [0 - 999]

    [7-2 Error Code Definitions and Solutions: Codes [0 - 999] ] Error Code Definitions and Solutions: Codes [0 - 999] 7-2-1 Error Code [0403] 1. Error code definition Serial communication error 2. Error definition and error detection method Serial communication error between the control board and the INV board on the compressor, and between the control board and the Fan board Detail code 1: Between the control board and the INV board Detail code 5: Between the control board and the Fan board...
  • Page 191: Error Code Definitions And Solutions: Codes [1000 - 1999]

    [7-3 Error Code Definitions and Solutions: Codes [1000 - 1999] ] Error Code Definitions and Solutions: Codes [1000 - 1999] 7-3-1 Error Code [1102] 1. Error code definition Discharge temperature fault 2. Error definition and error detection method 1) If the discharge temperature of 120 °C [248°F] or more is detected during the above operation (the first detection), the outdoor unit stops once, turns to anti-restart mode for 3 minutes, and restarts after 3 minutes automatically.
  • Page 192: Error Code [1301]

    [7-3 Error Code Definitions and Solutions: Codes [1000 - 1999] ] 7-3-2 Error Code [1301] 1. Error code definition Low pressure fault 2. Error definition and error detection method When starting the compressor from Stop Mode for the first time if low pressure reads 0.098MPa [14psi] immediately before start-up, the operation immediately stops.
  • Page 193: Error Code [1302] (During Operation)

    [7-3 Error Code Definitions and Solutions: Codes [1000 - 1999] ] 7-3-3 Error Code [1302] (during operation) 1. Error code definition High pressure fault 1 (Outdoor unit) 2. Error definition and error detection method 1) If the pressure of 3.78MPa [548psi] or higher is detected by the pressure sensor during operation (the first detection), the out- door stops once, turns to antirestart mode for 3 minutes, and restarts after 3 minutes automatically.
  • Page 194: Error Code [1302] (At Startup)

    [7-3 Error Code Definitions and Solutions: Codes [1000 - 1999] ] 7-3-4 Error Code [1302] (at startup) 1. Error code definition High pressure fault 2 (Outdoor unit) 2. Error definition and error detection method If the pressure of 0.098MPa [14psi] or lower is registered on the pressure sensor immediately before start-up, it will trigger an abnormal stop, and error code "1302"...
  • Page 195: Error Code Definitions And Solutions: Codes [2000 - 2999]

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] Error Code Definitions and Solutions: Codes [2000 - 2999] 7-4-1 Error Code [2500] (Models with a drain sensor) 1. Error code definition Drain sensor submergence 2. Error definition and error detection method 1) If an immersion of the drain sensor in the water is detected while the unit is in any mode other than the Cool/Dry mode and when the drain pump goes from OFF to ON, this condition is considered preliminary water leakage.
  • Page 196: Error Code [2500] (Models With A Float Switch)

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-2 Error Code [2500] (Models with a float switch) 1. Error code definition Drain sensor submergence 2. Error definition and error detection method 1) If an immersion of the float switch in the water is detected while the unit is in any mode other than the Cool/Dry mode and when the drain pump goes from OFF to ON, this condition is considered preliminary water leakage.
  • Page 197: Error Code [2502] (Models With A Drain Sensor)

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-3 Error Code [2502] (Models with a drain sensor) 1. Error code definition Drain pump fault 2. Error definition and error detection method 1) Make the drain sensor thermistor self-heat. If the temperature rise is small, it is interpreted that the sensor is immersed in water.
  • Page 198: Error Code [2502] (Models With A Float Switch)

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-4 Error Code [2502] (Models with a float switch) 1. Error code definition Drain pump fault 2. Error definition and error detection method 1) The immersion of sensor tip in water is detected by the ON/OFF signal from the float switch. ∗Submergence of the sensor When it is detected that the float switch has been ON for 15 seconds, it is interpreted that the sensor tip is immersed in water.
  • Page 199: Error Code [2503]

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-5 Error Code [2503] 1. Error code definition Drain sensor (Thd) fault 2. Error definition and error detection method If the open or short circuit of the thermistor has been detected for 30 seconds, this condition is considered to be a preliminary error, and the unit goes into the 3-minute restart delay mode.
  • Page 200: Error Code [2600]

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-6 Error Code [2600] 1. Error code definition Water leakage 2. Cause, check method and remedy Check that water does not leak from the pipes in such as the humidifier. 7-4-7 Error Code [2601] 1.
  • Page 201: Error Code [2602]

    [7-4 Error Code Definitions and Solutions: Codes [2000 - 2999] ] 7-4-8 Error Code [2602] 1. Error code definition Function setting error 2. Cause, check method and remedy Cause Check method and remedy The function selection switch on the LOSS- Set the function selection switch (SW5-5) on the LOSSNAY NAY unit (SW5-5) is set to ON.
  • Page 202: Error Code Definitions And Solutions: Codes [3000 - 3999]

    [7-5 Error Code Definitions and Solutions: Codes [3000 - 3999] ] Error Code Definitions and Solutions: Codes [3000 - 3999] 7-5-1 Error Code [3121] 1. Error code definition Out-of-range outside air temperature 2. Error definition and error detection method When the thermistor temperature of -32°C[-25°F] or below has continuously been detected for 3 minutes during heating op- eration (during compressor operation), the unit makes an error stop and "3121"...
  • Page 203: Error Code Definitions And Solutions: Codes [4000 - 4999]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] Error Code Definitions and Solutions: Codes [4000 - 4999] 7-6-1 Error Code [4102] (TKMU) 1. Error code definition Open phase 2. Error definition and error detection method An open phase of the power supply was detected at power on. The open phase of the power supply may not always be detected if a power voltage from another circuit is applied.
  • Page 204: Error Code [4102] (Ykmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-2 Error Code [4102] (YKMU) 1. Error code definition Open phase 2. Error definition and error detection method An open phase of the power supply (L1 phase, L2 phase) was detected at power on. The L3 phase current is outside of the specified range.
  • Page 205: Error Code [4106]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-3 Error Code [4106] 1. Error code definition <Transmission power supply fault Error detail code FF (Outdoor unit)> 2. Error definition and error detection method Transmission power output failure 3.
  • Page 206: Error Code [4115] (Tkmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-5 Error Code [4115] (TKMU) 1. Error code definition Power supply signal sync error 2. Error definition and error detection method The frequency cannot be determined when the power is switched on. 3.
  • Page 207: Error Code [4116]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-7 Error Code [4116] 1. Error code definition RPM error/Motor error 2. Error definition and error detection method LOSSNAY ∗The motor keep running even if the power is OFF. ∗The thermal overload relay is ON.
  • Page 208: Error Codes [4220, 4225] Detail Code 108 (Tkmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-9 Error Codes [4220, 4225] Detail Code 108 (TKMU) 1. Error code definition Abnormal bus voltage drop (Detail code 108) 2. Error definition and error detection method If Vdc 160V or less is detected during Inverter operation. (S/W detection) 3.
  • Page 209: Error Codes [4220, 4225] Detail Code 108 (Ykmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-10 Error Codes [4220, 4225] Detail Code 108 (YKMU) 1. Error code definition Abnormal bus voltage drop (Detail code 108) 2. Error definition and error detection method If Vdc 289V or less is detected during Inverter operation. (S/W detection) 3.
  • Page 210: Error Codes [4220, 4225] Detail Code 109 (Tkmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-11 Error Codes [4220, 4225] Detail Code 109 (TKMU) 1. Error code definition Abnormal bus voltage rise (Detail code 109) 2. Error definition and error detection method If Vdc 400V is detected during inverter operation.
  • Page 211: Error Codes [4220, 4225] Detail Code 110 (Tkmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-13 Error Codes [4220, 4225] Detail Code 110 (TKMU) 1. Error code definition VDC error (Detail code 110) 2. Error definition and error detection method Bus voltage abnormality If Vdc 400V or Vdc 160V is detected.
  • Page 212: Error Codes [4220, 4225] Detail Code 111 (Ykmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-15 Error Codes [4220, 4225] Detail Code 111 (YKMU) 1. Error code definition Logic error (Detail code 111) 2. Error definition and error detection method H/W error If only the H/W error logic circuit operates, and no identifiable error is detected. 3.
  • Page 213: Error Code [4230] (Tkmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-17 Error Code [4230] (TKMU) 1. Error code definition Heatsink overheat protection 2. Error definition and error detection method When the heat sink temperature (THHS) remains at or above 90°C [194°F] is detected. 3.
  • Page 214: Error Code [4240] (Tkmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-19 Error Code [4240] (TKMU) 1. Error code definition Overload protection 2. Error definition and error detection method If the output current of "(Iac) > 53 (Arms)" or "THHS > 80°C [175°F]" is continuously detected for 10 minutes or more during inverter operation.
  • Page 215: Error Codes [4250, 4255] Detail Code 101 (Tkmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-21 Error Codes [4250, 4255] Detail Code 101 (TKMU) 1. Error code definition IPM error (Detail code 101) 2. Error definition and error detection method In the case of 4250 IPM error signal is detected.
  • Page 216: Error Codes [4250, 4255] Detail Code 101 (Ykmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-22 Error Codes [4250, 4255] Detail Code 101 (YKMU) 1. Error code definition IPM error (Detail code 101) 2. Error definition and error detection method In the case of 4250 Overcurrent is detected by the overcurrent detection resistor (RSH) on the INV board.
  • Page 217: Error Code [4250] Detail Codes 103, 106, And 107 (Tkmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-23 Error Code [4250] Detail Codes 103, 106, and 107 (TKMU) 1. Error code definition DCCT overcurrent (H/W detection) (Detail code 103) Instantaneous overcurrent (Detail code 106) Overcurrent (effective value) (Detail code 107) 2.
  • Page 218: Error Codes [4250, 4255] Detail Code 104

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-25 Error Codes [4250, 4255] Detail Code 104 1. Error code definition Short-circuited IPM/Ground fault (Detail code 104) 2. Error definition and error detection method When IPM/IGBT short damage or grounding on the load side is detected just before starting the inverter. 3.
  • Page 219: Error Codes [4250, 4255] Detail Code 105

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-26 Error Codes [4250, 4255] Detail Code 105 1. Error code definition Overcurrent error due to short-circuited motor (Detail code 105) 2. Error definition and error detection method When a short is detected on the load side just before starting the inverter operation. 3.
  • Page 220: Error Code [4260] (Tkmu)

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-27 Error Code [4260] (TKMU) 1. Error code definition Heatsink overheat protection at startup 2. Error definition and error detection method The heatsink temperature (THHS) remains at or above 90°C [194°F] for 10 minutes or more at inverter startup. 3.
  • Page 221: Error Code Definitions And Solutions: Codes [5000 - 5999]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] Error Code Definitions and Solutions: Codes [5000 - 5999] 7-7-1 Error Codes [5101, 5102, 5103, 5104] 1. Error code definition 5101 Return air temperature sensor (TH21) fault (Indoor unit) Return air temperature sensor (TH4) fault (OA processing unit) 5102 Pipe temperature sensor (TH22) fault (Indoor unit)
  • Page 222: Error Codes [5104, 5105, 5106, 5107, 5109, 5111]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-2 Error Codes [5104, 5105, 5106, 5107, 5109, 5111] 1. Error code definition 5104 Discharge temperature sensor (TH4) fault (Outdoor unit) 5105 Accumulator inlet temperature sensor (TH5) fault (Outdoor unit) 5106 Heat exchanger inlet temperature sensor (TH6) fault (Outdoor unit) 5107...
  • Page 223: Error Code [5110] (Tkmu)

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-3 Error Code [5110] (TKMU) 1. Error code definition Heatsink temperature sensor (THHS) fault (Detail code 01) 2. Error definition and error detection method When a short or an open of THHS is detected just before or during the inverter operation. 3.
  • Page 224: Error Codes [5111, 5112, 5115, 5116]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-5 Error Codes [5111, 5112, 5115, 5116] 1. Error code definition 5111 Liquid inlet temperature sensor (TH11) fault (BC controller) 5112 Bypass outlet temperature sensor (TH12) fault (BC controller) 5115 LEV3 outlet temperature sensor (TH15) fault (BC controller) 5116...
  • Page 225: Error Code [5201]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-6 Error Code [5201] 1. Error code definition High-pressure sensor fault (63HS1) 2. Error definition and error detection method If the high pressure sensor detects 0.098MPa [14psi] or less during the operation, the outdoor unit stops once, turns to anti- restart mode for 3 minutes, and restarts after 3 minutes when the detected high pressure sensor is 0.098MPa [14psi] or more.
  • Page 226: Error Code [5301] Detail Code 115 (Tkmu)

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-8 Error Code [5301] Detail Code 115 (TKMU) 1. Error code definition ACCT sensor fault (Detail code 115) 2. Error definition and error detection method When the formula "output current < 2 Arms" remains satisfied for 10 seconds while the inverter is in operation. 3.
  • Page 227: Error Code [5301] Detail Code 116 (Tkmu)

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-10 Error Code [5301] Detail Code 116 (TKMU) 1. Error code definition DCCT sensor fault (Detail code116) 2. Error definition and error detection method When the bus current less than 18 Apeak is detected at startup (6Hz) 3.
  • Page 228: Error Code [5301] Detail Code 118 (Tkmu)

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-12 Error Code [5301] Detail Code 118 (TKMU) 1. Error code definition DCCT sensor circuit fault (Detail code118) 2. Error definition and error detection method When an error value is detected with the DCCT detection circuit just before the inverter starts 3.
  • Page 229: Error Code [5301] Detail Code 119 (Ykmu)

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-14 Error Code [5301] Detail Code 119 (YKMU) 1. Error code definition Open-circuited IPM/Loose ACCT connector (Detail code 119) 2. Error definition and error detection method Presence of enough current cannot be detected during the self-diagnostic operation immediately before inverter startup. 3.
  • Page 230: Error Code [5301] Detail Code 120 (Ykmu)

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-16 Error Code [5301] Detail Code 120 (YKMU) 1. Error code definition Faulty ACCT wiring (Detail code 120) 2. Error definition and error detection method Presence of target current cannot be detected during the self-diagnostic operation immediately before startup. 3.
  • Page 231: Error Codes [5305] Detail Code 133

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-18 Error Codes [5305] Detail Code 133 1. Error code definition Position detection error during operation (Detail code 133) 2. Error definition and error detection method An error from a motor sensor is detected during fan moter operation. 3.
  • Page 232: Error Codes [5305] Detail Code 134

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-19 Error Codes [5305] Detail Code 134 1. Error code definition RPM error before start up (Detail code 134) 2. Error definition and error detection method The fan RPM will not drop to the set RPM. 3.
  • Page 233: Error Code [5402]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-21 Error Code [5402] 1. Error code definition Outside humidity sensor fault 2. Error definition and error detection method Humidity sensor fault or built-in temperature sensor fault 3. Cause, check method and remedy 1) Check the connector CN22 on the circuit board for proper connection.
  • Page 234: Error Code Definitions And Solutions: Codes [6000 - 6999]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] Error Code Definitions and Solutions: Codes [6000 - 6999] 7-8-1 Error Code [6201] 1. Error code definition Remote controller board fault (nonvolatile memory error) 2. Error definition and error detection method This error is detected when the data cannot be read out from the built-in nonvolatile memory on the remote controller.
  • Page 235: Error Code [6600]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-3 Error Code [6600] 1. Error code definition Address overlaps 2. Error definition and error detection method An error in which signals from more than one indoor units with the same address are received The address and attribute that appear on the remote controller indicate the controller that detected the error.
  • Page 236: Error Code [6602]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-5 Error Code [6602] 1. Error code definition Transmission processor hardware error 2. Error definition and error detection method Although "0" was surely transmitted by the transmission processor, "1" is displayed on the transmission line. The address/attribute appeared on the display on the remote controller indicates the controller where an error oc- curred.
  • Page 237: Error Code [6603]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-6 Error Code [6603] 1. Error code definition Transmission line bus busy error 2. Error definition and error detection method Generated error when the command cannot be transmitted for 4-10 minutes in a row due to bus-busy Generated error when the command cannot be transmitted to the transmission line for 4-10 minutes in a row due to noise The address/attribute appeared on the display on the remote controller indicates the controller where an error oc- curred.
  • Page 238: Error Code [6607] Error Source Address = Outdoor Unit (Oc)

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-8 Error Code [6607] Error Source Address = Outdoor Unit (OC) 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).
  • Page 239: Error Code [6607] Error Source Address = Indoor Unit (Ic)

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-10 Error Code [6607] Error Source Address = Indoor Unit (IC) 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).
  • Page 240: Error Code [6607] Error Source Address = Lossnay (Lc)

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-11 Error Code [6607] Error Source Address = LOSSNAY (LC) 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).
  • Page 241: Error Code [6607] Error Source Address = Me Remote Controller

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-12 Error Code [6607] Error Source Address = ME Remote Controller 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).
  • Page 242: Error Code [6607] Error Source Address = System Controller

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-13 Error Code [6607] Error Source Address = System Controller 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).
  • Page 243: Error Code [6607] All Error Source Addresses

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-14 Error Code [6607] All Error Source Addresses 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).
  • Page 244: Error Code [6607] No Error Source Address

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-15 Error Code [6607] No Error Source Address 1. Error code definition No ACK error 2. Error definition and error detection method The error is detected when no acknowledgement (ACK signal) is received after the transmission. (eg. When the data is trans- mitted six times in a row with 30 seconds interval, the error is detected on the transmission side.) The address/attribute appeared on the display on the remote controller indicates the controller which did not provide the response (ACK).
  • Page 245: Error Code [6608]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-16 Error Code [6608] 1. Error code definition No response error 2. Error definition and error detection method When no response command is returned although acknowledgement (ACK) is received after transmission, an error is detect- When the data is transmitted 10 times in a row with 3 seconds interval, an error is detected on the transmission side.
  • Page 246: Error Code [6831]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-17 Error Code [6831] 1. Error code definition MA controller signal reception error (No signal reception) 2. Error definition and error detection method Communication between the MA remote controller and the indoor unit is not done properly. No proper data has been received for 3 minutes.
  • Page 247: Error Code [6832]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-18 Error Code [6832] 1. Error code definition MA remote controller signal transmission error (Synchronization error) 2. Error definition and error detection method MA remote controller and the indoor unit is not done properly. Failure to detect opening in the transmission path and unable to send signals ∗Indoor unit: 3 minutes ∗Remote controller: 6 seconds...
  • Page 248: Error Code [6833]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-19 Error Code [6833] 1. Error code definition MA remote controller signal transmission error (Hardware error) 2. Error definition and error detection method Communication between the MA remote controller and the indoor unit is not done properly. An error occurs when the transmitted data and the received data differ for 30 times in a row.
  • Page 249: Error Code [6834]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-20 Error Code [6834] 1. Error code definition MA controller signal reception error (Start bit detection error) 2. Error definition and error detection method Communication between the MA remote controller and the indoor unit is not done properly. No proper data has been received for 2 minutes.
  • Page 250: Error Code Definitions And Solutions: Codes [7000 - 7999]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] Error Code Definitions and Solutions: Codes [7000 - 7999] 7-9-1 Error Code [7100] 1. Error code definition Total capacity error 2. Error definition and error detection method The model total of indoor units in the system with one outdoor unit exceeds limitations. 3.
  • Page 251: Error Code [7101]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-2 Error Code [7101] 1. Error code definition Capacity code setting error 2. Error definition and error detection method Connection of incompatible (wrong capacity code) indoor unit or outdoor unit 3.
  • Page 252: Error Code [7102]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-3 Error Code [7102] 1. Error code definition Wrong number of connected units 2. Error definition and error detection method The number of connected indoor units is "0" or exceeds the allowable value. 3.
  • Page 253: Error Code [7105]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-4 Error Code [7105] 1. Error code definition Address setting error 2. Error definition and error detection method Erroneous setting of OC unit address Erroneous setting of BC controller address 3.
  • Page 254: Error Code [7107]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-6 Error Code [7107] 1. Error code definition Port setting error 2. Error definition and error detection method The port with wrong number is connected to the indoor unit.The model total connected to the port is greater than the specifi- cation.
  • Page 255: Error Code [7110]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-7 Error Code [7110] 1. Error code definition Connection information signal transmission/reception error 2. Error definition and error detection method The given indoor unit is inoperable because it is not properly connected to the outdoor unit in the same system. 3.
  • Page 256: Error Code [7113]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-9 Error Code [7113] 1. Error code definition Function setting error (improper connection of CNTYP) 2. Error source, cause, check method and remedy Error source Cause Check method and remedy Outdoor unit Wiring fault (Detail code 15)
  • Page 257: Error Code [7117]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-10 Error Code [7117] 1. Error code definition Model setting error 2. Error source, cause, check method and remedy Error source Cause Check method and remedy Outdoor unit Wiring fault (Detail code 15) Loose connectors, short-circuit, con- Check the connector CNTYP5 on the control board for...
  • Page 258: Error Code [7130]

    [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 7-9-11 Error Code [7130] 1. Error code definition Incompatible unit combination 2. Error definition and error detection method The check code will appear when the indoor units with different refrigerant systems are connected. 3.
  • Page 259 [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] - 248 - HWE13080...
  • Page 260: Chapter 8 Troubleshooting Based On Observed Symptoms

    Chapter 8 Troubleshooting Based on Observed Symptoms MA Remote Controller Problems..................... 251 8-1-1 The LCD Does Not Light Up....................... 251 8-1-2 The LCD Momentarily Lights Up and Then Goes Off................. 252 8-1-3 "HO" and "PLEASE WAIT" Do Not Go Off the Screen............... 253 8-1-4 Air Conditioning Units Do Not Operate When the ON Button Is Pressed.
  • Page 261 8-10-13 Simple Check on Inverter Circuit Components ................... 295 8-10-14 Troubleshooting Problems with Intelligent Power Module ..............296 8-10-15 Troubleshooting Problems with Diode Stack ..................297 8-11 Troubleshooting Inverter Problems (YKMU) .................. 298 8-11-1 Inverter-Related Problems and Solutions ................... 298 8-11-2 Checking the Inverter Board Error Detection Circuit................
  • Page 262: Ma Remote Controller Problems

    [8-1 MA Remote Controller Problems ] MA Remote Controller Problems 8 Troubleshooting Based on Observed Symptoms 8-1-1 The LCD Does Not Light Up. 1. Phenomena Even if the operation button on the remote controller is pressed, the display remains unlit and the unit does not start run- ning.(Power indicator ( ) is unlit and no lines appear on the remote controller.) 2.
  • Page 263: The Lcd Momentarily Lights Up And Then Goes Off

    [8-1 MA Remote Controller Problems ] 8-1-2 The LCD Momentarily Lights Up and Then Goes Off. 1. Phenomena When the remote controller operation SW is turned on, the operation status briefly appears on the display, then it goes off, and the display lights out immediately, and the unit stops. 2.
  • Page 264: Ho" And "Please Wait" Do Not Go Off The Screen

    [8-1 MA Remote Controller Problems ] 8-1-3 "HO" and "PLEASE WAIT" Do Not Go Off the Screen. 1. Phenomena "HO" or "PLEASE WAIT" display on the remote controller does not disappear, and no operation is performed even if the button is pressed.
  • Page 265: Air Conditioning Units Do Not Operate When The On Button Is Pressed

    [8-1 MA Remote Controller Problems ] 8-1-4 Air Conditioning Units Do Not Operate When the ON Button Is Pressed. 1. Phenomena Even if the operation button on the remote controller is pressed, the indoor and the outdoor units do not start running. 2.
  • Page 266: Me Remote Controller Problems

    [8-2 ME remote Controller Problems ] ME remote Controller Problems 8-2-1 The LCD Does Not Light Up. 1. Phenomena Even if the operation button on the remote controller is pressed, the display remains unlit and the unit does not start running. (Power indicator does not appear on the screen.) 2.
  • Page 267: The Lcd Momentarily Lights Up And Then Goes Off

    [8-2 ME remote Controller Problems ] 8-2-2 The LCD Momentarily Lights Up and Then Goes Off. 1. Phenomena When the remote controller operation SW is turned on, a temporary operation display is indicated, and the display lights out immediately. 2. Cause 1) The power is not supplied to the indoor unit.
  • Page 268: Ho" Does Not Go Off The Screen

    [8-2 ME remote Controller Problems ] 8-2-3 "HO" Does Not Go Off the Screen. 1. Phenomena "HO" display on the remote controller does not disappear, and no operation is performed even if the button is pressed. 2. Cause Without using MELANS 1) Outdoor unit address is set to "00"...
  • Page 269: 88" Appears On The Lcd

    [8-2 ME remote Controller Problems ] 8-2-4 "88" Appears on the LCD. 1. Phenomena "88" appears on the remote controller when the address is registered or confirmed. 2. Cause, check method and remedy Cause Check method and remedy An error occurs when the address is registered or con- firmed.
  • Page 270: Refrigerant Control Problems

    [8-3 Refrigerant Control Problems ] Refrigerant Control Problems 8-3-1 Units in the Cooling Mode Do Not Operate at Expected Capacity. 1. Phenomena Although cooling operation starts with the normal remote controller display, the capacity is not enough 2. Cause, check method and remedy Cause Check method and remedy Compressor frequency does not rise sufficiently.
  • Page 271 [8-3 Refrigerant Control Problems ] Cause Check method and remedy RPM error of the outdoor unit FAN Refer to the following page(s). [8-7 Troubleshooting Outdoor Unit Fan Prob- Motor failure or board failure, or airflow rate de- lems](page 272) crease due to clogging of the heat exchanger The fan is not properly controlled as the outdoor [7-7-2 Error Codes [5104, 5105, 5106, 5107, 5109, temperature cannot be precisely detected by the...
  • Page 272: Units In The Heating Mode Do Not Operate At Expected Capacity

    [8-3 Refrigerant Control Problems ] 8-3-2 Units in the Heating Mode Do Not Operate at Expected Capacity. 1. Phenomena Although heating operation starts with the normal remote controller display, the capacity is not enough. 2. Cause, check method and remedy Cause Check method and remedy Compressor frequency does not rise sufficiently.
  • Page 273 [8-3 Refrigerant Control Problems ] Cause Check method and remedy Indoor unit LEV malfunction Refer to the following page(s).[8-8 Troubleshooting Insufficient refrigerant flows due to LEV malfunction LEV Problems](page 273) (not enough opening). Temperature reading error on the indoor unit piping Check the thermistor.
  • Page 274: Outdoor Units Stop At Irregular Times

    [8-3 Refrigerant Control Problems ] 8-3-3 Outdoor Units Stop at Irregular Times. 1. Phenomena Outdoor unit stops at times during operation. 2. Cause, check method and remedy Cause Check method and remedy The first stop is not considered as an error, as the Check the mode operated in the past by displaying unit turns to anti-restart mode for 3 minutes as a pre- preliminary error history on LED display with SW4.
  • Page 275: Checking Transmission Waveform And For Electrical Noise Interference

    [8-4 Checking Transmission Waveform and for Electrical Noise Interference ] Checking Transmission Waveform and for Electrical Noise Interference 8-4-1 M-NET Control is performed by exchanging signals between the outdoor unit and the indoor unit (ME remote controller) through M- NET transmission. Noise interference on the transmission line will interrupt the normal transmission, leading to erroneous op- eration.
  • Page 276 [8-4 Checking Transmission Waveform and for Electrical Noise Interference ] (3) Check method and remedy 1) Measures against noise Check the followings when noise exists on the wave or the errors described in (1) occur. Error code definition Remedy Check that the wiring 1.
  • Page 277: Ma Remote Controller

    [8-4 Checking Transmission Waveform and for Electrical Noise Interference ] 8-4-2 MA Remote Controller The communication between the MA remote controller and the indoor unit is performed with current tone burst. (1) Symptoms caused by noise interference on the transmission line If noise is generated on the transmission line, and the communication between the MA remote controller and the indoor unit is interrupted for 3 minutes in a row, MA transmission error (6831) will occur.
  • Page 278: Pressure Sensor Circuit Configuration And Troubleshooting Pressure Sensor Problems

    [8-5 Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems ] Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems 8-5-1 Comparing the High-Pressure Sensor Measurement and Gauge Pressure By configuring the digital display setting switch (SW4 (when SW6-10 is set to OFF)) as shown in the figure below, the pressure as measured by the high-pressure sensor appears on the LED1 on the control board.
  • Page 279: Comparing The Low-Pressure Sensor Measurement And Gauge Pressure

    [8-5 Pressure Sensor Circuit Configuration and Troubleshooting Pressure Sensor Problems ] 8-5-3 Comparing the Low-Pressure Sensor Measurement and Gauge Pressure By configuring the digital display setting switch (SW4 (when SW6-10 is set to OFF)) as shown in the figure below, the pressure as measured by the low-pressure sensor appears on the LED1 on the control board.
  • Page 280: Troubleshooting Solenoid Valve Problems

    [8-6 Troubleshooting Solenoid Valve Problems ] Troubleshooting Solenoid Valve Problems Check whether the output signal from the control board and the operation of the solenoid valve match. Setting the self-diagnosis switch (SW4) as shown in the figure below causes the ON signal of each relay to be output to the LED's. Each LED shows whether the relays for the following parts are ON or OFF.
  • Page 281 [8-6 Troubleshooting Solenoid Valve Problems ] Refrigerant Circuit diagram (HP72, HP96 models) Solenoid valve block SV4d SV4a SV4b CV7a LEV5a TH11 CV3a CV2a CV5a ST18 CV8a CV9a SV5b ST1 BV1 CV6a LEV4 Solenoid valve block (three compartments) SV4d SV4b SV4a SV4d SV4b SV4a...
  • Page 282 [8-6 Troubleshooting Solenoid Valve Problems ] (4) In the case of SV5b (Bypass valve) This solenoid valve closes when energized (when the relay is on). This valve turns off for three minutes after the completion of the defrost cycle, or when SV9 is on turned ON and the value of 63HS1 is greater than 3.5 MPa [507psi] during Heating-only or Heating-main operation at the minimum frequency.
  • Page 283: Troubleshooting Outdoor Unit Fan Problems

    [8-7 Troubleshooting Outdoor Unit Fan Problems ] Troubleshooting Outdoor Unit Fan Problems (1) Fan motor (common items) To check the revolution of the fan, check the inverter output state on the self-diagnosis LED, as the inverter on the outdoor fan controls the revolutions of the fan.The revolution of the fan is approximately 680 rpm (HP72 model), 790 rpm (HP96 model) at full speed.
  • Page 284: Troubleshooting Lev Problems

    [8-8 Troubleshooting LEV Problems ] Troubleshooting LEV Problems 8-8-1 General Overview on LEV Operation LEV operation LEV are stepping-motor-driven valves that operate by receiving the pulse signals from the indoor and outdoor unit control boards. (1) Outdoor LEV (LEV5a, LEV4), Indoor LEV and BC controller LEV The valve opening changes according to the number of pulses.
  • Page 285 [8-8 Troubleshooting LEV Problems ] 3) Pulse signal output and valve operation Output pulses change in the following orders when the Output Output state Valve is closed; 1 (phase) number Valve is open; *1. When the LEV opening angle does not change, all the output phases will be off.
  • Page 286: Possible Problems And Solutions

    [8-8 Troubleshooting LEV Problems ] 8-8-2 Possible Problems and Solutions Malfunction Judgment method Remedy mode Microcomputer Disconnect the control board connector and connect the check LED When the drive circuit has a driver circuit fail- as shown in the figure below. problem, replace the control board.
  • Page 287: Coil Removal Instructions

    [8-8 Troubleshooting LEV Problems ] 8-8-3 Coil Removal Instructions (1) Outdoor unit LEV (LEV5a, LEV4) 1) Components The outdoor unit LEV consists of a coil and a valve body that can be separated from each other. Body Stopper Coil Lead wire 2) Removing the coil Securely hold the LEV at the bottom (as indicated by A in the figure), and turn the coil.
  • Page 288: Troubleshooting Problems With Major Components On Bc Controller

    [8-9 Troubleshooting Problems with Major Components on BC Controller ] Troubleshooting Problems with Major Components on BC Controller 8-9-1 Pressure Sensor Troubleshooting flow chart for pressure sensor START Note 1 Check whether the pressure sensor or the connectors of P1 and P3 are connected, properly Repair the fault.
  • Page 289 [8-9 Troubleshooting Problems with Major Components on BC Controller ] 1) BC controller: Phenomena when the pressure sensor is connected wrongly (reverse connection of P1 and P3) to the board. Symptoms Cooling-only Cooling-main Heating only Heating main Non-cooling Indoor heating SC small Normal Non-cooling SC11 large...
  • Page 290: Temperature Sensor

    [8-9 Troubleshooting Problems with Major Components on BC Controller ] 8-9-2 Temperature Sensor Troubleshooting instructions for thermistor START Note 1 Pull out the thermistor connector in trouble from the board. Note 2 Measure the temperature of the thermistor in trouble. (actual measurement value) Note 2 Check the thermistor resistor.
  • Page 291 [8-9 Troubleshooting Problems with Major Components on BC Controller ] 1) For the connectors on the board, TH11 and TH12 are connected to CN10, and TH15 and TH16 are connected to CN11. Dis- connect the connector in trouble, and check the sensor of each number. Pull out the sensor connector from the I/O board, Do not pull the sensor by holding the lead wire.
  • Page 292: Troubleshooting Flowchart For Levs

    [8-9 Troubleshooting Problems with Major Components on BC Controller ] 8-9-3 Troubleshooting Flowchart for LEVs No cooling capacity No heating capacity Note 1 Check whether the electric expansion valve and the solenoid valve connector are not disconnected or not loose. Repair the fault.
  • Page 293 [8-9 Troubleshooting Problems with Major Components on BC Controller ] 1) BC controller: Phenomena when LEV is connected wrongly (reverse connection of LEV1 and LEV3) to the board. Phenomena Cooling-only Cooling-main Heating only Heating main Non-cooling Non-cooling and non-heating Indoor heating SC small Non-cooling SH12 small, SC11 small SH12 small, SC11 small...
  • Page 294 [8-9 Troubleshooting Problems with Major Components on BC Controller ] Self-diagnosis LED Measurement data Symbol SW4 setting value 1 2 3 4 5 6 7 8 9 10 LEV1 opening 1 2 3 4 5 6 7 8 9 10 LEV2 opening 1 2 3 4 5 6 7 8 9 10 G, GA, HA...
  • Page 295: Troubleshooting Flowchart For Solenoid Valves

    [8-9 Troubleshooting Problems with Major Components on BC Controller ] 8-9-4 Troubleshooting Flowchart for Solenoid Valves Start Check for pins not fully inserted on the connector and check the colors of the lead wires visually. Intermediate connector Control board When LEV is fully closed : tick sound When LEV is fully open : no sound Brown Brown...
  • Page 296 [8-9 Troubleshooting Problems with Major Components on BC Controller ] (1) Solenoid valve (SVA, SVB, SVC) Faulty judgment of solenoid valve Stop the operation of the applied BC remote controller system. Stop the operation Check whether the wire to the solenoid valve is not connected wrongly, or the connector is not loose.
  • Page 297 [8-9 Troubleshooting Problems with Major Components on BC Controller ] Check whether the BC board output signal corresponds with the solenoid valve operation correspond. 1) SVA, SVB, SVC SVA, SVB, and SVC turn on or off according to the indoor unit operation mode. Mode Cooling Heating...
  • Page 298: Bc Controller Transformer

    [8-9 Troubleshooting Problems with Major Components on BC Controller ] 8-9-5 BC Controller Transformer BC controller control board CNTR CN03 White Normal Abnormal CNTR(1)-(3) about 58 Ω. Open-phase or shorting CN03(1)-(3) about 1.6 Ω. * Before measuring the resistance, pull out the connector. - 287 - HWE13080...
  • Page 299: Troubleshooting Inverter Problems (Tkmu)

    [8-10 Troubleshooting Inverter Problems (TKMU) ] 8-10 Troubleshooting Inverter Problems (TKMU) 8-10-1 Inverter-Related Problems and Solutions Replace only the compressor if only the compressor is found to be defective. (Overcurrent will flow through the inverter if the compressor is damaged, however, the power supply is automatically cut when overcurrent is detected, protecting the inverter from damage.) Replace only the fan motor if only the fan motor is found to be defective.
  • Page 300 [8-10 Troubleshooting Inverter Problems (TKMU) ] Error display/failure condition Measure/inspection item Inverter related errors Implement solutions that correspond to the error codes or preliminary error 4250, 4255, 4220, 4225, 4230, 4240, 4260, 5301, 5305, codes.[7-1 Error Code and Preliminary Error Code Lists](page 175) 0403 Main power breaker trip <1>...
  • Page 301: Checking The Inverter Board Error Detection Circuit

    [8-10 Troubleshooting Inverter Problems (TKMU) ] 8-10-2 Checking the Inverter Board Error Detection Circuit Items to be checked Phenomena Remedy (1) Remove power sup- IPM/overcurrent breaker trip Refer to the following page(s). ply. Error code: 4250 [8-10-14 Troubleshooting Problems with Intelligent Detail code: No.
  • Page 302: Checking The Inverter For Damage During Compressor Operation

    [8-10 Troubleshooting Inverter Problems (TKMU) ] 8-10-5 Checking the Inverter for Damage during Compressor Operation Items to be checked Phenomena Remedy Put the outdoor unit into operation. Overcurrent-related prob- Check items 8-10-2 through 8-10-4 for prob- Check the inverter output voltage lems occur immediately af- lems.
  • Page 303: Checking The Fan Inverter For Damage At No Load

    [8-10 Troubleshooting Inverter Problems (TKMU) ] 8-10-8 Checking the Fan Inverter for Damage at No Load Items to be checked Phenomena Remedy Turn off breaker. Within 30 seconds from the start of Change Fan board. *Turn power off without fail. operation, an error other than a posi- tion error (5305) (detail code 132) is detected.
  • Page 304: Checking The Fan Inverter For Damage With Load

    [8-10 Troubleshooting Inverter Problems (TKMU) ] 8-10-9 Checking the Fan Inverter for Damage with Load Items to be checked Phenomena Remedy Turn off breaker. After operation, electrical overload error Check for fan motor lock. or position detection error and unit stops →If locked, change for fan mo- within 10 seconds.
  • Page 305: Solutions For The Main No-Fuse Breaker Trip

    [8-10 Troubleshooting Inverter Problems (TKMU) ] 8-10-11 Solutions for the Main No-Fuse Breaker Trip Items to be checked Phenomena Remedy Perform Meg check between the Zero to several ohm, or Meg failure a. Check each part in the main inverter terminals on the power terminal circuit.
  • Page 306: Simple Check On Inverter Circuit Components

    [8-10 Troubleshooting Inverter Problems (TKMU) ] 8-10-13 Simple Check on Inverter Circuit Components Turn off the power of the unit and leave it turned off for 10 minutes. Check that the voltage of the electrolytic capacitor (inverter main circuit) is 20 VDC or below. Then, remove the relevant parts from the control box. Before checking, turn the power off and remove the parts to be checked from the control box.
  • Page 307: Troubleshooting Problems With Intelligent Power Module

    [8-10 Troubleshooting Inverter Problems (TKMU) ] 8-10-14 Troubleshooting Problems with Intelligent Power Module Measure resistances between each pair of terminals on the IPM with a tester, and use the results for troubleshooting. 1) Notes on measurement Check the polarity before measuring. (On the tester, black normally indicates plus.) Check that the resistance is not open ( Ω) or not shorted (to 0 Ω).
  • Page 308: Troubleshooting Problems With Diode Stack

    [8-10 Troubleshooting Inverter Problems (TKMU) ] 8-10-15 Troubleshooting Problems with Diode Stack Measure resistances between each pair of terminals on the diode stack with a tester, and use the results for troubleshooting. For cautionary notes on measuring diode stack resistance and information on the types of testers to be used, refer to the fol- lowing page(s).
  • Page 309: Troubleshooting Inverter Problems (Ykmu)

    [8-11 Troubleshooting Inverter Problems (YKMU) ] 8-11 Troubleshooting Inverter Problems (YKMU) 8-11-1 Inverter-Related Problems and Solutions Replace only the compressor if only the compressor is found to be defective. (Overcurrent will flow through the inverter if the compressor is damaged, however, the power supply is automatically cut when overcurrent is detected, protecting the inverter from damage.) Replace only the fan motor if only the fan motor is found to be defective.
  • Page 310 [8-11 Troubleshooting Inverter Problems (YKMU) ] Error display/failure condition Measure/inspection item Inverter related errors Implement solutions that correspond to the error codes or preliminary error 4250, 4255, 4220, 4225, 4230, 4240, 4260, 5301, 5305, codes.[7-1 Error Code and Preliminary Error Code Lists](page 175) 0403 Main power breaker trip Refer to the following page(s).
  • Page 311: Checking The Inverter Board Error Detection Circuit

    [8-11 Troubleshooting Inverter Problems (YKMU) ] 8-11-2 Checking the Inverter Board Error Detection Circuit Items to be checked Phenomena Remedy Remove power supply. Overcurrent error Replace the INV board. Error code: 4250 Detail code: No. 101, 104, 105, 106, and Disconnect the inverter Logic error Replace the INV board.
  • Page 312: Checking The Inverter For Damage During Compressor Operation

    [8-11 Troubleshooting Inverter Problems (YKMU) ] 8-11-5 Checking the Inverter for Damage during Compressor Operation Items to be checked Phenomena Remedy Put the outdoor unit into operation. Overcurrent-related problems occur im- Check items 8-11-2 through 8- Check the inverter output voltage af- mediately after compressor startup.
  • Page 313: Checking The Fan Inverter For Damage At No Load

    [8-11 Troubleshooting Inverter Problems (YKMU) ] 8-11-8 Checking the Fan Inverter for Damage at No Load Items to be checked Phenomena Remedy Turn off breaker. Within 30 seconds from the start of Change fan board. *Turn power off without fail. operation, an error other than a posi- tion error (5305) (detail code 132) is detected.
  • Page 314: Checking The Fan Inverter For Damage With Load

    [8-11 Troubleshooting Inverter Problems (YKMU) ] 8-11-9 Checking the Fan Inverter for Damage with Load Items to be checked Phenomena Remedy Turn off breaker. After operation, electrical overload error Check for fan motor lock. or position detection error and unit stops →If locked, change for fan mo- within 10 seconds.
  • Page 315: Solutions For The Main No-Fuse Breaker Trip

    [8-11 Troubleshooting Inverter Problems (YKMU) ] 8-11-11 Solutions for the Main No-Fuse Breaker Trip Items to be checked Phenomena Remedy Check the breaker capacity. Use of a non-specified break- Replace it with a specified breaker. Perform Meg check between the Zero to several ohm, or Meg Check each part and wiring.
  • Page 316: Simple Check On Inverter Circuit Components

    [8-11 Troubleshooting Inverter Problems (YKMU) ] 8-11-13 Simple Check on Inverter Circuit Components Before inspecting the inside of the control box, turn off the power, keep the unit off for at least 10 minutes, and confirm that the voltage between FT-P and FT-N on INV Board has dropped to DC20V or less. Part name Judgment method IGBT module...
  • Page 317 [8-11 Troubleshooting Inverter Problems (YKMU) ] Judgment value (reference) Black ( + ) SC-P1 FT-N SC-L1 SC-L2 SC-L3 SC-P1 5 - 200 Ω 5 - 200 Ω 5 - 200 Ω FT-N ∞ ∞ ∞ Red (-) SC-L1 ∞ 5 - 200 Ω SC-L2 ∞...
  • Page 318: Control Circuit (Tkmu)

    [8-12 Control Circuit (TKMU) ] 8-12 Control Circuit (TKMU) 8-12-1 Control Power Supply Function Block 1) PURY-HP72, HP96TKMU-A-H Power source system (AC 208 / 230 V) Control system (DC 5 ~ 30 V) Noise filter Compressor Smoothing capacitor Inverter Noise filter...
  • Page 319: Troubleshooting Problems With Outdoor Unit Transmission Power Supply Circuit

    [8-12 Control Circuit (TKMU) ] 8-12-2 Troubleshooting Problems with Outdoor Unit Transmission Power Supply Circuit 1) PURY-HP72, HP96TKMU-A-H Check the voltage at the indoor/outdoor transmission terminal block (TB3) of outdoor unit. Check whether the transmission line is disconnected, DC 24 ~ 30 V check for contact failure, and repair the problem.
  • Page 320: Control Circuit (Ykmu)

    [8-13 Control Circuit (YKMU) ] 8-13 Control Circuit (YKMU) 8-13-1 Control Power Supply Function Block 1) PURY-HP72, HP96YKMU-A Power source system (AC 230 / 460 V) Control system (DC 5 ~ 30 V) INV board Noise filter Compressor Rectifier Smoothing capacitor...
  • Page 321: Troubleshooting Problems With Outdoor Unit Transmission Power Supply Circuit

    [8-13 Control Circuit (YKMU) ] 8-13-2 Troubleshooting Problems with Outdoor Unit Transmission Power Supply Circuit 1) PURY-HP72, HP96YKMU-A Check the voltage at the indoor/outdoor transmission terminal block (TB3) of outdoor unit. Check whether the transmission line is disconnected, DC 24 ~ 30 V check for contact failure, and repair the problem.
  • Page 322: 8-14 Measures For Refrigerant Leakage

    [8-14 Measures for Refrigerant Leakage ] 8-14 Measures for Refrigerant Leakage 1. Leak spot: In the case of extension pipe for indoor unit (Cooling season) 1) Mount a pressure gauge on the service check joint (CJ2) on the low-pressure side. 2) Stop all the indoor units, and close the high-pressure side refrigerant service valve (BV2) on the outdoor unit while the com- pressor is being stopped.
  • Page 323 [8-14 Measures for Refrigerant Leakage ] 3. Leak spot: In the case of extension pipe for indoor unit (Heating season) (1) Run all the indoor units in heating test run mode. 1) To run the indoor unit in test run mode, set SW4 (769) on the outdoor unit control board to ON. 2) Change the setting of the remote controller for all the indoor units to the heating mode.
  • Page 324: 8-15 Compressor Replacement Instructions

    [8-15 Compressor Replacement Instructions ] 8-15 Compressor Replacement Instructions Follow the procedures below (Steps 1 through 5) to remove the compressor components and replace the compressor. Reassemble them in the reverse order after replacing the compressor. 1. Remove both the top and bottom service panels 2.
  • Page 325 [8-15 Compressor Replacement Instructions ] Compressor covers (top) (The inside of the compressor cover is lined with sound insulation material.) Suction piping Discharge pipe Compressor covers (right) (The inside of the compressor cover is lined with sound insulation material.) Compressor covers (left) (The inside of the compressor cover is lined with sound insulation material.)
  • Page 326: Solenoid Valve Block And Check Valve Replacement Instructions

    * Following instructions show procedures for replacing service parts for Solenoid valve block ASSY (SV4a, SV4b, SV4d), Check valve (CV4a, CV6a, CV8a, CV9a). Replace them properly according to the procedures. 1 1 . . Applicable models PURY-HP72,96TKMU-A-H(-BS) PURY-HP72,96YKMU-A(-BS) 2 2 . . Parts to be serviced, Set-content Following instructions are applicable to 1-4 service parts on the table below.
  • Page 327 [8-16 Solenoid Valve Block and Check Valve Replacement Instructions ] 2) Remove the control box and the partition plate. 4) Remove the relay box 3) Remove the cable that is fixed to the Frame M ASSY 1) Remove the upper and remove the Frame M ASSY.
  • Page 328 [8-16 Solenoid Valve Block and Check Valve Replacement Instructions ] (2) Check valve (CV4a, CV6a, CV8a, CV9a) replacement procedures Remove the Solenoid valve block ASSY following "(1) Solenoid valve block ASSY (SV4a, SV4b, SV4d) replacement procedures" on the front page. Debraze G-J parts (total 4 places), and remove the Check valve ASSY.
  • Page 329 [8-16 Solenoid Valve Block and Check Valve Replacement Instructions ] Detailed View of Part A Brazing or debrazing pipes Check valve replacement (ø28.6) CV6a CV4a When replacing CV4a Remove the brazing 1. (ø28.6) (ø15.88) (ø15.88) When replacing CV6a ø 22.2) Remove the brazing 2.
  • Page 330: 8-17 Bc Controller Maintenance Instructions

    [8-17 BC Controller Maintenance Instructions ] 8-17 BC Controller Maintenance Instructions 1. Service panel *Special care must be taken when replacing heavy parts. Work procedure Explanatory figure 1) Remove the two lock nuts on the control box, loosen the other two, and remove the control box. Ceiling panel Loosen Service panel...
  • Page 331 [8-17 BC Controller Maintenance Instructions ] 3. Thermistor (liquid pipe/gas pipe temperature detection) *Special care must be taken when replacing heavy parts. Work procedure Explanatory figure (1) Remove the service panel. 1) For TH11, TH12, and TH15, refer to 1. 1), 2). 2) For TH16, refer to 1.
  • Page 332 [8-17 BC Controller Maintenance Instructions ] 5. LEV Work procedure Explanatory figure (1) Remove the service panel. (See figure at right.) (2) Replace the LEV in trouble. LEV3 Secure enough service space in the ceiling for welding LEV1 operation, and conduct the work carefully.If required, dismount the unit from the ceiling, and conduct the work.
  • Page 333: Troubleshooting Problems Using The Led Status Indicators On The Outdoor Unit

    [8-18 Troubleshooting Problems Using the LED Status Indicators on the Outdoor Unit ] 8-18 Troubleshooting Problems Using the LED Status Indicators on the Outdoor Unit If the LED error display appear as follows while all the SW4 switches and SW6-10 are set to OFF, check the items under the ap- plicable item numbers below.
  • Page 334: Chapter 9 Led Status Indicators On The Outdoor Unit Circuit Board

    Chapter 9 LED Status Indicators on the Outdoor Unit Circuit Board LED Status Indicators........................325 9-1-1 How to Read the LED ......................... 325 9-1-2 Initial LED Display..........................326 9-1-3 Clock Memory Function ........................327 LED Status Indicators Table ......................328 - 323 - HWE13080...
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  • Page 336: Led Status Indicators

    [9-1 LED Status Indicators ] LED Status Indicators 9 LED Status Indicators on the Outdoor Unit Circuit Board 9-1-1 How to Read the LED By setting the DIP SW 4-1 through 4-10 (Set SW6-10 to OFF.)(Switch number 10 is represented by 0), the operating condition of the unit can be monitored on the service monitor.
  • Page 337: Initial Led Display

    [9-1 LED Status Indicators ] 9-1-2 Initial LED Display From power on until the completion of initial settings, the following information will be displayed on the monitor screen. (Displays No. 1 through No. 4 in order repeatedly.) Item Display Remarks Software version [0103] : Version 1.03 Refrigerant type...
  • Page 338: Clock Memory Function

    [9-1 LED Status Indicators ] 9-1-3 Clock Memory Function The outdoor unit has a simple clock function that enables the unit to calculate the current time with an internal timer by receiv- ing the time set by the system controller, such as AG-150A. If an error (including a preliminary error) occurs, the error history data and the error detection time are stored into the service memory.
  • Page 339: Led Status Indicators Table

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