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Mitsubishi Electric PURY-P200YLM-A(1) Service Handbook

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Table of Contents
2015
AIR CONDITIONER
Service Handbook
Model
PURY-P200, P250, P300, P350, P400, P450, P500YLM-A(1)
PURY-P400, P450, P500, P550, P600, P650, P700, P750, P800, P850, P900YSLM-A(1)
PURY-EP200, EP250, EP300, EP350, EP400, EP450, EP500YLM-A
PURY-EP500, EP550, EP600, EP650, EP700, EP750, EP800, EP850, EP900YSLM-A

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  Summary of Contents for Mitsubishi Electric PURY-P200YLM-A(1)

  • Page 1 2015 AIR CONDITIONER Service Handbook Model PURY-P200, P250, P300, P350, P400, P450, P500YLM-A(1) PURY-P400, P450, P500, P550, P600, P650, P700, P750, P800, P850, P900YSLM-A(1) PURY-EP200, EP250, EP300, EP350, EP400, EP450, EP500YLM-A PURY-EP500, EP550, EP600, EP650, EP700, EP750, EP800, EP850, EP900YSLM-A...
  • 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.
  • Page 9 viii...
  • 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 Cautionary notes on installation environment and maintenance............ 17 Chapter 2 Restrictions System Configurations ........................
  • Page 11 CONTENTS Error Code Definitions and Solutions: Codes [0 - 999]..............226 Error Code Definitions and Solutions: Codes [1000 - 1999]............228 Error Code Definitions and Solutions: Codes [2000 - 2999]............232 Error Code Definitions and Solutions: Codes [3000 - 3999]............238 Error Code Definitions and Solutions: Codes [4000 - 4999]............
  • Page 12: Chapter 1 Check Before Servicing

    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 R2 YLM 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. Notes To evacuate air from the entire system Applying a vacuum through the check joints at the refrigerant service valve on the high and low pressure sides (BV1 and 2) is not enough to attain the desired vacuum pressure. Be sure to apply a vacuum through the check joints at the refrigerant service valve on the high and low pressure sides (BV1 and 2) and also through the check joints on the high and low pressure sides (CJ1 and 2).
  • 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: Cautionary Notes On Installation Environment And Maintenance

    [1-5 Cautionary notes on installation environment and maintenance ] Cautionary notes on installation environment and maintenance Salt-resistant unit is resistant to salt corrosion, but not salt-proof. Please note the following when installing and main- taining outdoor units in marine atmosphere. 1) Install the salt-resistant unit out of direct exposure to sea breeze, and minimize the exposure to salt water mist.
  • Page 29 [1-5 Cautionary notes on installation environment and maintenance ] - 18 - HWE1314A...
  • Page 30: Chapter 2 Restrictions

    Chapter 2 Restrictions System Configurations........................21 Types and Maximum Allowable Length of Cables................23 Switch Settings ........................... 24 M-NET Address Settings ........................25 2-4-1 Address Settings List ..........................25 2-4-2 Outdoor Unit Power Jumper Connector Connection................26 2-4-3 Outdoor Unit Centralized Controller Switch Setting ................26 2-4-4 Room Temperature Detection Position Selection .................
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  • Page 32: 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. (1) Standard combinations Outdoor units Composing units Maximum total ca- Maximum number Types of connect- pacity of connect-...
  • Page 33 [2-1 System Configurations ] (2) High COP combinations Outdoor units Composing units Maximum total ca- Maximum number Types of connect- pacity of connect- of connectable in- able indoor units able indoor units door units EP200 YLM-A 100 - 300 P15 - P250 models R410A series in- EP250 YLM-A...
  • Page 34: 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 35: Switch Settings

    [2-3 Switch Settings ] 2) Remote controller wiring MA remote controller ME remote controller Type VCTF, VCTFK, CVV, CVS, VVR, VVF, VCT Shielded cables CVVS, CPEVS, and MVVS Number of 2-core cable 2-core cable cores Cable type 2 *3 0.3 to 1.25mm 2 *3 *5 0.3 to 1.25mm Cable size...
  • Page 36: 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 37: Outdoor Unit Power Jumper Connector Connection

    [2-4 M-NET Address Settings ] Unit or controller Sym- Address Setting method Factory setting address range setting System con- Group remote control- 201 to 250 Assign an address that equals the sum of the smallest group troller number of the group to be controlled and 200. System remote con- Assign an arbitrary but unique address within the range listed troller...
  • Page 38: Room Temperature Detection Position Selection

    [2-4 M-NET Address Settings ] 2-4-4 Room Temperature Detection Position Selection To stop the fan during heating Thermo-OFF (SW1-7 and 1-8 on the indoor units to be set to ON), use the built-in thermistor on the remote controller or an optional thermistor. 1) To use the built-in sensor on the remote controller, set the SW1-1 to ON.
  • Page 39: 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 40 [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 (2) CN3S External input...
  • Page 41 [2-4 M-NET Address Settings ] (5) CN3K External input Outdoor unit adapter Relay circuit 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 42: 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 43: 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 44 [2-6 System Connection Example ] - 33 - HWE1314A...
  • Page 45: 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 46 [2-7 Example System with an MA Remote Controller ] the indoor unit (IC) to the terminal block on the two MA (4) Wiring method remote controllers. 1) Indoor/outdoor transmission line Set one of the MA remote controllers as a sub controller. Daisy-chain terminals M1 and M2 of the terminal block (Refer to the Instruction Manual for the MA remote con- for indoor-outdoor transmission line (TB3) on the outdoor...
  • Page 47: 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 48 [2-7 Example System with an MA Remote Controller ] No connection is required. (4) Wiring method 3) MA remote controller wiring 1) Indoor/outdoor transmission line Same as 2-7-1 Daisy-chain terminals M1 and M2 of the terminal block When 2 remote controllers are connected to the sys- for indoor-outdoor transmission line (TB3) on the outdoor units (OC and OS), of the terminal block for indoor-out- Same as 2-7-1...
  • Page 49: 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 50 [2-7 Example System with an MA Remote Controller ] problem with the outdoor unit whose power jumper was (4) Wiring method moved from CN41 to CN40, central control is not possible, even if TB7's are daisy-chained.) 1) Indoor/outdoor transmission line c) When connecting TB7, only commence after checking that Same as 2-7-2 the voltage is below 20 VDC.
  • Page 51: 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 52 [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.) c) When connecting TB7, only commence after checking that 1) Indoor/outdoor transmission line the voltage is below 20 VDC.
  • Page 53: 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 54 [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 55: 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. Group Group Group Group SW5-1 OFF ON SW5-1 OFF ON TB02...
  • Page 56 [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 57 [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 58 [2-7 Example System with an MA Remote Controller ] - 47 - HWE1314A...
  • Page 59: 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 60 [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 61: 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 62 [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 63 [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 64: 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 P400, EP400 models or above.
  • Page 65 [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] Vertical separation between the main BC controller and indoor units (m[ft]) - 54 - HWE1314A...
  • Page 66 [2-10 Restrictions on Refrigerant Pipes ] (2) System that requires more than 16 BC controller ports or with multiple BC controllers <System with one outdoor unit> 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 67 [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 68 [2-10 Restrictions on Refrigerant Pipes ] (3) System that requires more than 16 BC controller ports or with multiple BC controllers <System with two outdoor units> Outdoor Twinning kit (High/Low press.) CMY-R100VBK-A: P400 - P500YSLM Outdoor unit CMY-R100VBK2: P550 - P650YSLM Outdoor unit CMY-R200VBK2: P700 - P800YSLM CMY-R200XLVBK: P850 - P900YSLM...
  • Page 69 [2-10 Restrictions on Refrigerant Pipes ] 7) The maximum capacity of the indoor units that is connectable to the CMB-P-V-GB1 types of sub BC controllers is P350 or below (when two GB1 type controllers are connected P350 or below for both combined) . The maximum total capacity of indoor units that is connectable to the sub BC controller CMB-P1016V-HB1 is P350 or below.
  • Page 70: Restrictions On Refrigerant Pipe Size

    [2-10 Restrictions on Refrigerant Pipes ] 2-10-2 Restrictions on Refrigerant Pipe Size (1) Between outdoor unit and BC controller (Part A) Unit : mm [inch] Outdoor units High-pressure pipe Low-pressure pipe (E)P200 ø15.88 [5/8"] ø19.05 [3/4"] (E)P250 ø19.05 [3/4"] ø22.2 [7/8"] (E)P300 ø19.05 [3/4"] ø22.2 [7/8"]...
  • Page 71: 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 (E)P200 - (E)P350 models Connection: Brazed connection To outdoor unit BC controller Note 1 Note 2 Reducer Branch joint (Model name:CMY-Y102S-G2) Junction pipe kit (Standard...
  • Page 72 [2-10 Restrictions on Refrigerant Pipes ] 1) To connect P15 - P50 models of indoor units use 2) To connect P100 - P250 models of indoor units (or when the reducer that is supplied with the BC controller. the total capacity of indoor units exceeds P81), use a junction pipe kit and merge the two nozzles.
  • Page 73 [2-10 Restrictions on Refrigerant Pipes ] (2) Size of the pipe that fits the main BC controller ports (E)P200 - (E)P900 models Branch joint (Model name:CMY-Y102S-G2) Connection: Brazed connection To outdoor unit (Optional accessory) BC controller (main) Note 1 Reducer (Standard supplied parts) Note 2 Junction pipe kit...
  • Page 74 [2-10 Restrictions on Refrigerant Pipes ] Unit : mm [inch] Pipe sections Operation High-pressure side (liquid) Low-pressure side (gas) Outdoor unit side (E)P200 ø15.88 [5/8"] (Brazed connection) ø19.05 [3/4"] (Brazed connection) (E)P250 ø19.05 [3/4"] (Brazed connection) ø22.2 [7/8"] (Brazed connection) (E)P300 ø19.05 [3/4"] (Brazed connection) ø22.2 [7/8"] (Brazed connection)
  • Page 75 [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) (Optional accessory) Connection: Brazed connection Note 2 To Main BC controller Junction pipe kit BC controller (sub) (Model name: CMY-R160-J1) Note 1 (Optional accessory)
  • Page 76: 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........ 67 3-1-1 External Appearance of Outdoor Unit ....................67 3-1-2 Outdoor Unit Refrigerant Circuits......................69 Outdoor Unit Refrigerant Circuit Diagrams..................75 Functions of the Major Components of Outdoor Unit ..............78 Functions of the Major Components of Indoor Unit ................
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  • Page 78: 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-EP200, EP250, EP300, EP350YLM-A PURY-P200, P250, P300, P350, P400YLM-A(1) Fan guards Fan guards Fin guard...
  • Page 79 [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] (2) PURY-EP400, EP450, EP500YLM-A PURY-P450, P500YLM-A(1) Fan guards Fan guards Fans Fans Side panel Side panel Fin guard Fin guard Control box Control box Fan box Fan box Heat exchanger Heat exchanger Side panel Side panel...
  • Page 80: Outdoor Unit Refrigerant Circuits

    [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] 3-1-2 Outdoor Unit Refrigerant Circuits (1) PURY-P200, P250YLM-A(1) Solenoid valve(SV10) Solenoid valve(SV9) Low-pressure sensor (63LS) 4-way valve(21S4a) Solenoid valve(SV11) Check valve(CV7a) High-pressure High-pressure check joint check joint(CJ1) High-pressure switch (63H1) Low-pressure Low-pressure...
  • Page 81 [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] (2) PURY-P300, P350, P400YLM-A(1) Low-pressure sensor Solenoid valve(SV10) Solenoid valve(SV9) (63LS) High-pressure switch(63H1) 4-way valve(21S4a) Check valve(CV7a) High-pressure Solenoid valve(SV11) sensor(63HS1) High-pressure High-pressure check joint check joint(CJ1) Low-pressure Low-pressure Compressor check joint check joint(CJ2)
  • Page 82 [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] (3) PURY-P450, P500YLM-A(1) Low-pressure High-pressure High-pressure sensor(63LS) switch(63H1) sensor(63HS1) 4-way valve Check valve Solenoid valve Low-pressure Low-pressure High-pressure High-pressure 4-way valve (CV7a) (21S4a) (SV9) check joint check joint(CJ2) check joint check joint(CJ1) (21S4b) Solenoid valve...
  • Page 83 [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] (4) PURY-EP200, EP250YLM-A 4-way valve(21S4a) Solenoid valve(SV10) Solenoid valve(SV9) Solenoid valve(SV7) Solenoid valve(SV11) High-pressure switch (63H1) Check valve(CV7a) Low-pressure sensor (63LS) High-pressure sensor High-pressure High-pressure (63HS1) check joint check joint(CJ1) Compressor cover Low-pressure Low-pressure...
  • Page 84 [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] (5) PURY-EP300, EP350YLM-A Low-pressure sensor Solenoid valve(SV10) Solenoid valve(SV9) High-pressure switch (63LS) (63H1) 4-way valve(21S4a) High-pressure sensor(63HS1) Check valve(CV7a) Solenoid valve (SV11) Solenoid valve (SV7) High-pressure High-pressure check joint check joint(CJ1) Low-pressure Low-pressure...
  • Page 85 [3-1 External Appearance and Refrigerant Circuit Components of Outdoor Unit ] (6) PURY-EP400, EP450, EP500YLM-A Check valve Solenoid valve Solenoid valve High-pressure High-pressure Low-pressure Low-pressure High-pressure High-pressure 4-way valve(21S4b) (CV7a) (SV7) (SV4c) switch(63H1) sensor(63HS1) check joint check joint(CJ2) check joint check joint(CJ1) 4-way valve(21S4a) Solenoid valve...
  • Page 86: Outdoor Unit Refrigerant Circuit Diagrams

    [3-2 Outdoor Unit Refrigerant Circuit Diagrams ] Outdoor Unit Refrigerant Circuit Diagrams (1) PURY-P200, P250YLM-A(1)(-BS) 21S4a Solenoid valve block SV10 SV4d SV4a SV4b ST17 63H1 63HS1 CV7a SV11 LEV5a 63LS SV1a TH11 CV3a CV2a ST18 CV8a CV9a SV5b COMP CV6a CV4a (2) PURY-P300, P350, P400YLM-A(1)(-BS) 21S4a...
  • Page 87 [3-2 Outdoor Unit Refrigerant Circuit Diagrams ] (3) PURY-P450, P500YLM-A(1)(-BS) 21S4b SV4c CV7b 21S4a Solenoid valve block SV11 SV4d ST17 SV4a SV4b 63H1 CV7a LEV5a 63HS1 SV10 LEV5b 63LS TH11 SV1a TH12 SV5b ST18 CV4b CV2b CV5b CV5a COMP CV2a CV3a CV6b ST1 BV1...
  • Page 88 [3-2 Outdoor Unit Refrigerant Circuit Diagrams ] (5) PURY-EP300, EP350YLM-A(-BS) 21S4a SV11 Solenoid valve block SV4d SV10 CV3a SV4a SV4b ST17 CV7a 63H1 63HS1 LEV5a 63LS SV1a TH11 CV2a CV5a ST18 CV8a CV9a SV5b COMP CV6a CV4a (6) PURY-EP400, EP450, EP500YLM-A(-BS) 21S4b SV4c CV7b...
  • Page 89: 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 (E)200 - (E)250 models pressor (Comp1) refrigerant by adjusting the operat- Low-pressure shell scroll ing frequency based on the oper- compressor...
  • Page 90 [3-3 Functions of the Major Components of Outdoor Unit ] Part Symbols Notes Usage Specifications Check method name (functions) Thermis- Controls defrosting during heating Degrees Celsius Resistance check (Pipe operation = 15k temperature) = 3460 0/80 R = 15 3460 1) Detects outdoor air tempera- (Outdoor tem- ture...
  • Page 91 [3-3 Functions of the Major Components of Outdoor Unit ] Part Symbols Notes Usage Specifications Check method name (functions) LEV5a,b LEV5b is Evaporating temperature control DC12V Refer to the sec- only on the Opening of stepping motor tion "Continuity P450, driving valve 0-3000 pulses Test with a Tes- P500,...
  • Page 92: 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 93: 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 V-G1, GA1, HA1 (1) Front Liquid pipe (Indoor unit side) Gas pipe (Indoor unit side) (2) Rear view <G1 type> TH11 SVM1 LEV3...
  • Page 94 [3-5 External Appearance and Refrigerant Circuit Components of BC Controller ] (3) Rear view <GA1 type> TH16 LEV2 LEV3 TH11 LEV1 Gas/Liquid separator SVM2 Tube in tube heat exchanger SVM1 TH12 TH15 (4) Rear view <HA1 type> Gas/Liquid separator LEV3 LEV1 SVM2 SVM2b...
  • Page 95 [3-5 External Appearance and Refrigerant Circuit Components of BC Controller ] 2. CMB-P V-GB1, HB1 (1) Front Liquid pipe (Indoor unit side) Gas pipe (Indoor unit side) (2) Rear view TH12 LEV3 TH15 - 84 - HWE1314A...
  • Page 96: Bc Controller Refrigerant Circuit Diagrams

    [3-6 BC Controller Refrigerant Circuit Diagrams ] BC Controller Refrigerant Circuit Diagrams (1) CMB-P104 - P1016V-G1 SVC/SVA/SVB Solenoid valve block TH15 Gas/Liquid separator LEV3 TH12 TH11 LEV1 TH16 Check valve block SVM1 - 85 - HWE1314A...
  • Page 97 [3-6 BC Controller Refrigerant Circuit Diagrams ] (2) CMB-P108, P1010, P1013, P1016V-GA1 (main) SVC/SVA/SVB Solenoid valve block TH15 Gas/Liquid separator LEV3 SVM2 TH12 HIC-B TH11 LEV1 TH16 Check valve block HIC-A LEV2 SVM1 (3) CMB-P104, P108V-GB1 (sub) SVC/SVA/SVB Solenoid valve block TH12 TH15 LEV3...
  • Page 98 [3-6 BC Controller Refrigerant Circuit Diagrams ] (4) CMB-P1016V-HA1 (main) SVC/SVA/SVB TH15 Gas/Liquid SVM2 separator LEV3 SVM2b TH12 HIC-B TH11 LEV1 TH16 HIC-A SVM1 SVM1b (5) CMB-P1016V-HB1 (sub) SVC/SVA/SVB Solenoid valve block TH12 TH15 LEV3 HIC-C Check valve block - 87 - HWE1314A...
  • Page 99: 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) G1 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 100 [3-7 Functions of the Major Components of BC Controller ] (2) GA1 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 101 [3-7 Functions of the Major Components of BC Controller ] (3) GB1 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 102 [3-7 Functions of the Major Components of BC Controller ] (4) HA1 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 103 [3-7 Functions of the Major Components of BC Controller ] (5) HB1 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 104: Chapter 4 Electrical Components And Wiring Diagrams

    Chapter 4 Electrical Components and Wiring Diagrams Outdoor Unit Circuit Board Arrangement..................95 4-1-1 Outdoor Unit Control Box........................95 4-1-2 Fan Box..............................98 Outdoor Unit Circuit Board Components ..................99 4-2-1 Control Board............................99 4-2-2 M-NET Board (Transmission Power Supply Board) ................100 4-2-3 INV Board ............................
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  • Page 106: Outdoor Unit Circuit Board Arrangement

    [4-1 Outdoor Unit Circuit Board Arrangement ] Outdoor Unit Circuit Board Arrangement 4 Electrical Components and Wiring Diagrams 4-1-1 Outdoor Unit Control Box <HIGH VOLTAGE WARNING> Control box houses high-voltage parts. 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 107 [4-1 Outdoor Unit Circuit Board Arrangement ] (2) PURY-EP500YLM-A Fan board INV board Control board Noise filter M-NET board Terminal block for transmission line (TB3, TB7) Terminal block Ground terminal Capacitor Board for power supply (TB1) DC Reactor - 96 - HWE1314A...
  • Page 108 [4-1 Outdoor Unit Circuit Board Arrangement ] 1) Exercise caution not to damage the bottom and the front panel of the control box. Damage to these parts affect the water- proof and dust proof properties of the control box and may result in damage to its internal components. 2) Faston terminals have a locking function.
  • Page 109: Fan Box

    [4-1 Outdoor Unit Circuit Board Arrangement ] 4-1-2 Fan Box (1) PURY-P450, P500YLM-A(1) PURY-EP400, EP450, EP500YLM-A FAN board Connect board Note 1) 1. Handle the fan box with care. If the front or the bottom panel becomes damaged, water or dust may enter the fan box, dam- aging its internal parts.
  • Page 110: Outdoor Unit Circuit Board Components

    [4-2 Outdoor Unit Circuit Board Components ] Outdoor Unit Circuit Board Components 4-2-1 Control Board 16 VDC GND(FAN INV board 1) 5 VDC output CN2/2A 17 VDC CN332 Serial communication 17 VDC signal input Serial communication 18 VDC output CN801 GND(INV board) GND(FAN INV board 2) Pressure switch connection...
  • Page 111: M-Net Board (Transmission Power Supply Board)

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-2 M-NET Board (Transmission Power Supply Board) CNS2 CNIT Transmission line input/output for 12VDC input CN04 centralized control system CN102 Bus voltage input 5VDC input Power supply output for centralized control system Power supply detection output Indoor/outdoor transmission line input/output Power supply ON/OFF Grounding...
  • Page 112: Inv Board

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-3 INV Board (1) PURY-P200, P250, P300, P350, P400, P450, P500YLM-A(1) PURY-EP200, EP250, EP300, EP350, EP400, EP450YLM-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 113 [4-2 Outdoor Unit Circuit Board Components ] (2) PURY-EP500YLM-A FT-R21 SC-P Bus voltage output(P) Bus voltage output(P) CNRY R001 FT001 SC-L Inrush current limiting Oversurrent CNCT4A Neutral point output(P) DC bus current input relay input detection resistor Electric current sensor (DC) output (CT3) LED5...
  • Page 114: Fan Board

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-4 Fan Board LED1 LED4 Lit: Inverter operation Microcomputer in operation (Lit) Blinking: Inverter error RSH02 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 115: Noise Filter

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-5 Noise Filter (1) PURY-P200, P250, P300, P350, P400, P450, P500YLM-A(1) PURY-EP200, EP250, EP300, EP350, EP400, EP450YLM-A Output Output (Rectified L2-N current) (Rectified L2-N current) Surge absorber circuit Surge absorber circuit Short circuit Short circuit Grounding F1,F2,F3,F4...
  • Page 116 [4-2 Outdoor Unit Circuit Board Components ] (2) PURY-EP500YLM-A CN1B ①L3 ④L2 CN1A Input ①N ③L1 ①Surge absorber circuit Output ③Surge absorber circuit ①L2 ⑤Short circuit ③N Grounding ⑥Short circuit Grounding ⑤L3 CAUTION FOR HIGH VOLTAGE Fuse 250VAC 6.3A TB24 Input/output Output ①L1...
  • Page 117: Capacitor Board

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-6 Capacitor Board (1) PURY-EP500YLM-A CN101 CN103 Input(L2) Output Input(N) (Rectified L3-N current) Input(L3) CN107 Output (L3-N rectifier) CN102 Power supply detection signal output CN104 Output (L3-N rectifier) SC-P Bus voltage input(P) note.1 CN106 SC-N Bus voltage input...
  • Page 118: Connect Board

    [4-2 Outdoor Unit Circuit Board Components ] 4-2-7 Connect Board (1) PURY-P450, P500YLM-A(1) PURY-EP400, EP450, EP500YLM-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 119: Outdoor Unit Electrical Wiring Diagrams

    [4-3 Outdoor Unit Electrical Wiring Diagrams ] Outdoor Unit Electrical Wiring Diagrams (1) PURY-P200, P250, P300, P350, P400YLM-A(1) PURY-EP200, EP250, EP300, EP350YLM-A - 108 - HWE1314A...
  • Page 120 [4-3 Outdoor Unit Electrical Wiring Diagrams ] (2) PURY-P450, P500YLM-A(1) PURY-EP400, EP450YLM-A - 109 - HWE1314A...
  • Page 121 [4-3 Outdoor Unit Electrical Wiring Diagrams ] (3) PURY-EP500YLM-A - 110 - HWE1314A...
  • Page 122: Transmission Booster Electrical Wiring Diagrams

    [4-4 Transmission Booster Electrical Wiring Diagrams ] Transmission Booster Electrical Wiring Diagrams Terminal block for power supply (TB1) 250V 5A Red Red Red Black White White Green/Yellow 220 - 240VAC Varistor Noise filter Black White White White White Varistor Green Black Stabilized power supply Blue...
  • Page 123: 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-P1016V-G1, GA1, HA1 Transformer Terminal block for power supply Terminal block for transmission line Relay board BC board - 112 - HWE1314A...
  • Page 124: Bc Controller Circuit Board Components

    [4-6 BC Controller Circuit Board Components ] BC Controller Circuit Board Components 4-6-1 BC Board - 113 - HWE1314A...
  • Page 125: Four-Relay Board

    [4-6 BC Controller Circuit Board Components ] 4-6-2 Four-Relay Board 4-6-3 Ten-Relay Board - 114 - HWE1314A...
  • Page 126: Bc Controller Electrical Wiring Diagrams

    [4-7 BC Controller Electrical Wiring Diagrams ] BC Controller Electrical Wiring Diagrams (1) CMB-P104V-G1 model - 115 - HWE1314A...
  • Page 127 [4-7 BC Controller Electrical Wiring Diagrams ] (2) CMB-P105,106V-G1 models - 116 - HWE1314A...
  • Page 128 [4-7 BC Controller Electrical Wiring Diagrams ] (3) CMB-P108,1010V-G1 models - 117 - HWE1314A...
  • Page 129 [4-7 BC Controller Electrical Wiring Diagrams ] (4) CMB-P1013,1016V-G1 models - 118 - HWE1314A...
  • Page 130 [4-7 BC Controller Electrical Wiring Diagrams ] (5) CMB-P108,1010V-GA1 models - 119 - HWE1314A...
  • Page 131 [4-7 BC Controller Electrical Wiring Diagrams ] (6) CMB-P1013,1016V-GA1 models - 120 - HWE1314A...
  • Page 132 [4-7 BC Controller Electrical Wiring Diagrams ] (7) CMB-P104V-GB1 model - 121 - HWE1314A...
  • Page 133 [4-7 BC Controller Electrical Wiring Diagrams ] (8) CMB-P108V-GB1 model - 122 - HWE1314A...
  • Page 134 [4-7 BC Controller Electrical Wiring Diagrams ] (9) CMB-P1016V-HA1 model - 123 - HWE1314A...
  • Page 135 [4-7 BC Controller Electrical Wiring Diagrams ] (10) CMB-P1016V-HB1 model - 124 - HWE1314A...
  • Page 136: Chapter 5 Control

    Chapter 5 Control Dipswitch Functions and Factory Settings ..................127 5-1-1 Outdoor Unit Switch Functions and Factory Settings ................. 127 5-1-2 Indoor Unit Switch Functions and Factory Settings ................131 5-1-3 Remote Controller Switch Functions and Factory Settings..............133 5-1-4 BC Controller Switch Settings......................
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  • Page 138: 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 setting tim- Switch Function switch setting (Note 2) Unit address setting Set to 00 or 51-100 with the dial switch...
  • Page 139 [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 Status 1-10 Self-diagnosis/operation SW6-10: Indicators on the Outdoor Unit Circuit Anytime after power on...
  • Page 140 [5-1 Dipswitch Functions and Factory Settings ] (2) INV board 1) PURY-P200, P250, P300, P350, P400, P450, P500YLM-A(1) PURY-EP200, EP250, EP300, EP350, EP400, EP450YLM-A Function according to connec- Setting timing Connector Function Enabled Disabled Enabled Disabled CN6 short- Enabling/disabling the following error Error detec- Error detec- Anytime after power on...
  • Page 141 [5-1 Dipswitch Functions and Factory Settings ] (3) Fan board (Control box side, Fan box side) Function according to switch setting Switch Function Switch setting timing Enabling/Disabling no-load opera- No-load oper- No-load oper- Anytime after power on tion ation disabled ation enabled No-load operation will continue for approximately 30 seconds, and...
  • Page 142: 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 143 [5-1 Dipswitch Functions and Factory Settings ] (2) Address switch Actual indoor unit address setting varies in different systems. Refer to the installation manual for the outdoor unit for details on how to make the address setting. Each address is set with a combination of the settings for the 10's digit and 1's digit. (Example) When setting the address to "3", set the 1's digit to 3, and the 10's digit to 0.
  • Page 144: 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 simple remote controller (PAC-YT52CRA) There are switches on the back of the top case. Remote controller Main/Sub and other function settings are performed using these switches.
  • Page 145: Bc Controller Switch Settings

    [5-1 Dipswitch Functions and Factory Settings ] (2) ME remote controller (PAR-F27MEA) 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 146: 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 147: 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 148 [5-2 Outdoor Unit Control ] (4) Bypass solenoid valve (SV7) (ON = Open) Operation During heating operation or during heating- main operation During defrost cycle When stopped Others (5) Bypass solenoid valve (SV10) (ON = Open) Operation SV10 When defrosting upper heat exchanger dur- ing Continuous heating mode(P200 to P400 models and EP200 to EP350 models) When defrosting left heat exchanger during...
  • Page 149: 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 150: 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 151 [5-2 Outdoor Unit Control ] (2) Defrost operation Outdoou unit Compressor frequency Model Compressor frequency (E)P200, (E)P250 models 79Hz (E)P300, (E)P350, P400 models 107Hz EP400, (E)P450, (E)P500 models 112Hz Outdoor unit fan Stopped SV1a ON (open) SV5b ON (closed) 21S4a, 21S4b OFF (closed) BC controller LEV1...
  • Page 152: Continuous Heating Mode Control

    [5-2 Outdoor Unit Control ] 5-2-8 Continuous heating mode control (1) Continuous heating mode start conditions Continuous heating mode will start when all the conditions listed in the table below are met (outside temperature, cumulative compressor operation time, and piping temperature). However, even when the condition is met, if the Continuous heating mode is performed the maximum of 3 times consecutively, the reverse defrost operation will be performed once the next time.
  • Page 153 [5-2 Outdoor Unit Control ] 2) When combination of units For a combination of units, operation is split so that there is a unit for defrosting and a unit for the heating operation. If two of the combination of units are operated, the OC is defrosted and then the OS is defrosted. If one of the combination of units is operated, the stopped unit is started, the unit that was operating is defrosted, and then the unit that was stopped before the control began is defrosted.
  • Page 154: Refrigerant Recovery Control

    [5-2 Outdoor Unit Control ] 5-2-9 Refrigerant Recovery Control Refrigerant recovery is performed for each BC port during heating operation to prevent the refrigerant from accumulating in- side the units that are stopped (in the fan mode), in the cooling mode, or in the heating Thermo-OFF mode. It is also performed during cooling operation to prevent an excessive amount of refrigerant from accumulating in the outdoor heat exchanger.
  • Page 155: Evaporation Temperature Control (Expansion Valves )

    [5-2 Outdoor Unit Control ] (3) Outdoor unit heat exchanger capacity control patterns Solenoid valve Operation Model Operation mode patterns SV4a SV4b SV4c SV4d (E)P200, (E)P250, Cooling-only (E)P300, (E)P350, Cooling-main P400 models Heating-only Heating-main Defrost EP400, (E)P450, Cooling-only (E)P500 models Cooling-main Heating-only Heating-main...
  • Page 156 [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 P250 or above. The compressor on the OC starts up. The compressor on the OC remains in operation, and the compressor on the OS starts up.
  • Page 157: Emergency Operation Mode

    [5-2 Outdoor Unit Control ] 5-2-13 Emergency Operation Mode 1. Problems with the outdoor unit Systems with two outdoor units have a mode that allows one of the outdoor units to perform a backup 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 158 [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 159: Unit Control Scheme

    [5-2 Outdoor Unit Control ] 5-2-14 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 160: Refrigerant Circuits And Refrigerant Cycle Diagrams

    [5-2 Outdoor Unit Control ] 5-2-15 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 161: Operation Mode

    [5-2 Outdoor Unit Control ] 5-2-16 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 162: Demand Control

    [5-2 Outdoor Unit Control ] 5-2-17 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 163: Bc Controller Control

    [5-3 BC Controller Control ] BC Controller Control 1. Control of SVA, SVB, and SVC SVA, SVB, and SVC turn on or off depending on the operation mode of the branch. Mode Cooling Heating Stopped Defrost Port 2. Control of SVM1 snd SVM1b SVM turns on or off depending on the operation mode.
  • Page 164: 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 165 [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 *Note 1 on the remote controller Indoor units registered to the remote controller...
  • Page 166 [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 167: 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 168 [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 169 [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 170: Chapter 6 Test Run

    Chapter 6 Test Run Read before Test Run........................161 MA and ME Remote Controller Functions and Specifications ............. 162 6-2-1 Function/Specification Comparison ....................162 6-2-2 Local Remote Controller Selection Tips....................162 Making the Group and Interlock Settings from an ME Remote Controller ........163 6-3-1 Overview .............................
  • Page 171 - 160 - HWE1314A...
  • Page 172: 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 173: 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 174: 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 175 [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 -Press button ] to bring up the following display. simultaneously for 2 seconds to bring up the display as Press again to go back to the Group Setting window as shown shown below.
  • Page 176: 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 177: 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 to find the address to be deleted and perform deletion with the address being displayed in the display window.
  • Page 178: 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 four types of functions can be made or changed as necessary. 1) Skip-Auto-Mode setting The automatic operation mode that is supported by some simultaneous cooling/heating type units can be made unselectable via the ME remote controller.
  • Page 179 [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 180: 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-31MAA) This setting is required only when the operation of City Multi units is interlocked with LOSSNAY units. This setting is not available for the Mr.
  • Page 181: Ma Remote Controller (Par-21Maa)

    [6-5 Making Interlock Settings from an MA Remote Controller ] 6-5-2 MA Remote Controller (PAR-21MAA) * 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. Perform this operation to enter the interlock setting between the LOSSNAY and the indoor units to which the remote controller is connected, or to search and delete registered information.
  • Page 182 [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 183: Ma Simple Remote Controller

    [6-5 Making Interlock Settings from an MA Remote Controller ] 6-5-3 MA Simple Remote Controller Make this setting only when interlocked operation with LOSSNAY is necessary with CITY MULTI models. Perform this operation when you want to register the LOSSNAY, confirm the registered units, or delete the registered units controlled by the remote controller.
  • Page 184 [6-5 Making Interlock Settings from an MA Remote Controller ] <1. Registration procedure> Set the address of the indoor unit to be interlocked with the LOSSNAY unit using the buttons. (01 to 50) After setting, press the button and set the Lossnay address you want to register by operating the buttons.
  • Page 185 [6-5 Making Interlock Settings from an MA Remote Controller ] <2. Confirmation procedure> Set the address of the indoor unit connected by the remote controller whose LOSSNAY you want to confirm using the buttons. (01 to 50) Press the button and button simultaneously for 2 seconds, and check the LOSSNAY address registered at the set indoor unit address.
  • Page 186: 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 187: Test Run Method

    [6-7 Test Run Method ] Test Run Method 6-7-1 MA Remote Controller (PAR-31MAA) (1) Remote controller button functions Function button The assignment of the function buttons varies depending on the screen. Follow the guide screen that will appear at the bottom of the screen (from the left, F1, F2, F3, and F4).
  • Page 188 [6-7 Test Run Method ] (3) Entering the maintenance information Model name, serial number, and dealer's phone number can be registered to the remote controller to be displayed on the screen when an error occurs. Step 1: Switching the remote controller screen to "Maintenance information" (Requires the maintenance password.
  • Page 189: Ma Remote Controller (Par-21Maa)

    [6-7 Test Run Method ] 6-7-2 MA Remote Controller (PAR-21MAA) The figure shows an MA remote controller (PAR-21MAA). ON/OFF button Set Temperature buttons Down Fan Speed button TIME SUN MON TUE WED THU FRI SAT TIMER AFTER AFTER ERROR CODE FUNCTION FILTER WEEKLY...
  • Page 190: 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 191: 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 P200 P250...
  • Page 192 [6-9 Evaluating and Adjusting Refrigerant Charge ] (1) Calculation formula The amount of refrigerant to be added depends on the size and the length of field piping. (unit in m[ft]) When the piping length to the farthest indoor unit is shorter than 30.5 meters (100 feet) Amount of added refrigerant (kg) = (0.36 x L ) + (0.23 x L ) + (0.16 x L...
  • Page 193 [6-9 Evaluating and Adjusting Refrigerant Charge ] Charged amount for Outdoor Charged amount for Outdoor Unit(s) Unit(s) Outdoor unit model Outdoor unit model β (kg) β' (oz) β (kg) β' (oz) P200 model P400 model P250 model P450 model P300 model P500 model Single P350 model...
  • Page 194 [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 P200 P250...
  • Page 195 [6-9 Evaluating and Adjusting Refrigerant Charge ] (2) Example Outdoor unit 1 Outdoor unit 2 Branch joint kit Indoor Branch joint (CMY-Y202-G2) (CMY-Y102L-G2) BC controller(HB1) (CMY-Y102S-G2) BC controller(HA1) H H′ Branch joint BC controller(HB1) Reducer (P20 - P50 models) (CMY-Y102S-G2) (Supplied with the BC Controller) Junction pipe kit (CMY-R160-J1)
  • Page 196: 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 197 [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 198: 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 199: 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-P200YLM-A(1) PURY-P250YLM-A(1) BC controller model CMB-P104V-G1 CMB-P104V-G1 Indoor 27°C/19°C [81°F/66°F] 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] 20°C/- [68°F/-]...
  • Page 200 [6-11 Standard Operation Data (Reference Data) ] Outdoor unit model PURY-P300YLM-A(1) PURY-P350YLM-A(1) BC controller model CMB-P104V-G1 CMB-P108V-G1 Indoor 27°C/19°C [81°F/66°F] 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] 7°C/6°C [45°F/43°F]...
  • Page 201 [6-11 Standard Operation Data (Reference Data) ] Outdoor unit model PURY-P400YLM-A(1) PURY-P450YLM-A(1) BC controller model CMB-P104V-GA1 CMB-P108V-GA1 Indoor 27°C/19°C [81°F/66°F] 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] 7°C/6°C [45°F/43°F]...
  • Page 202 [6-11 Standard Operation Data (Reference Data) ] Outdoor unit model PURY-P500YLM-A(1) BC controller model CMB-P106V-GA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit Number of units in operation Conditions...
  • Page 203: Dual Unit Combination (Standard)

    [6-11 Standard Operation Data (Reference Data) ] 6-11-2 Dual Unit Combination (Standard) Packaged unit model PURY-P400YSLM-A(1) Outdoor unit model PURY-P200YLM-A(1) PURY-P200YLM-A(1) BC controller model CMB-P104V-GA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor...
  • Page 204 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-P450YSLM-A(1) Outdoor unit model PURY-P250YLM-A(1) PURY-P200YLM-A(1) BC controller model CMB-P108V-GA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 205 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-P500YSLM-A(1) Outdoor unit model PURY-P250YLM-A(1) PURY-P250YLM-A(1) BC controller model CMB-P108V-GA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 206 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-P550YSLM-A(1) Outdoor unit model PURY-P300YLM-A(1) PURY-P250YLM-A(1) BC controller model CMB-P1013V-GA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 207 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-P600YSLM-A(1) Outdoor unit model PURY-P300YLM-A(1) PURY-P300YLM-A(1) BC controller model CMB-P1013V-GA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 208 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-P650YSLM-A(1) Outdoor unit model PURY-P350YLM-A(1) PURY-P300YLM-A(1) BC controller model CMB-P1016V-HA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 209 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-P700YSLM-A(1) Outdoor unit model PURY-P350YLM-A(1) PURY-P350YLM-A(1) BC controller model CMB-P1016V-HA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 210 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-P750YSLM-A(1) Outdoor unit model PURY-P400YLM-A(1) PURY-P350YLM-A(1) BC controller model CMB-P1016V-HA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 211 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-P800YSLM-A(1) Outdoor unit model PURY-P400YLM-A(1) PURY-P400YLM-A(1) BC controller model CMB-P1016V-HA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 212 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-P850YSLM-A(1) Outdoor unit model PURY-P450YLM-A(1) PURY-P400YLM-A(1) BC controller model CMB-P1016V-HA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 213 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-P900YSLM-A(1) Outdoor unit model PURY-P450YLM-A(1) PURY-P450YLM-A(1) BC controller model CMB-P1016V-HA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 214: Single Unit (High Cop Unit)

    [6-11 Standard Operation Data (Reference Data) ] 6-11-3 Single Unit (High COP Unit) Outdoor unit model PURY-EP200YLM-A PURY-EP250YLM-A BC controller model CMB-P104V-G1 CMB-P104V-G1 Indoor 27°C/19°C [81°F/66°F] 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] 20°C/- [68°F/-] Ambient temperature DB/WB...
  • Page 215 [6-11 Standard Operation Data (Reference Data) ] Outdoor unit model PURY-EP300YLM-A PURY-EP350YLM-A BC controller model CMB-P104V-G1 CMB-P108V-G1 Indoor 27°C/19°C [81°F/66°F] 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] 7°C/6°C [45°F/43°F]...
  • Page 216 [6-11 Standard Operation Data (Reference Data) ] Outdoor unit model PURY-EP400YLM-A PURY-EP450YLM-A BC controller model CMB-P104V-GA1 CMB-P108V-GA1 Indoor 27°C/19°C [81°F/66°F] 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] 7°C/6°C [45°F/43°F]...
  • Page 217 [6-11 Standard Operation Data (Reference Data) ] Outdoor unit model PURY-EP500YLM-A BC controller model CMB-P108V-GA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit Number of units in operation Conditions...
  • Page 218: Dual Unit Combination (High Cop Unit)

    [6-11 Standard Operation Data (Reference Data) ] 6-11-4 Dual Unit Combination (High COP Unit) Packaged unit model PURY-EP500YSLM-A Outdoor unit model PURY-EP250YLM-A PURY-EP250YLM-A BC controller model CMB-P108V-GA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating)
  • Page 219 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-EP550YSLM-A Outdoor unit model PURY-EP300YLM-A PURY-EP250YLM-A BC controller model CMB-P1013V-GA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 220 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-EP600YSLM-A Outdoor unit model PURY-EP300YLM-A PURY-EP300YLM-A BC controller model CMB-P1013V-GA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 221 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-EP650YSLM-A Outdoor unit model PURY-EP350YLM-A PURY-EP300YLM-A BC controller model CMB-P1016V-HA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 222 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-EP700YSLM-A Outdoor unit model PURY-EP350YLM-A PURY-EP350YLM-A BC controller model CMB-P1016V-HA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 223 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-EP750YSLM-A Outdoor unit model PURY-EP400YLM-A PURY-EP350YLM-A BC controller model CMB-P1016V-HA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 224 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-EP800YSLM-A Outdoor unit model PURY-EP400YLM-A PURY-EP400YLM-A BC controller model CMB-P1016V-HA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 225 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-EP850YSLM-A Outdoor unit model PURY-EP450YLM-A PURY-EP400YLM-A BC controller model CMB-P1016V-HA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 226 [6-11 Standard Operation Data (Reference Data) ] Packaged unit model PURY-EP900YSLM-A Outdoor unit model PURY-EP450YLM-A PURY-EP450YLM-A BC controller model CMB-P1016V-HA1 Indoor 27°C/19°C [81°F/66°F] Ambient temperature DB/WB (cooling) Outdoor 35°C/- [95°F/-] Indoor 20°C/- [68°F/-] Ambient temperature DB/WB (heating) Outdoor 7°C/6°C [45°F/43°F] Number of units connected Unit Indoor unit...
  • Page 227 [6-11 Standard Operation Data (Reference Data) ] - 216 - HWE1314A...
  • Page 228: Chapter 7 Troubleshooting Using Error Codes

    Chapter 7 Troubleshooting Using Error Codes Error Code and Preliminary Error Code Lists ................221 Error Code Definitions and Solutions: Codes [0 - 999] ..............226 7-2-1 Error Code [0403] ..........................226 7-2-2 Error Code [0404] ..........................227 Error Code Definitions and Solutions: Codes [1000 - 1999] ............228 7-3-1 Error Code [1102] ..........................
  • Page 229 7-7-3 Error Code [5110] ..........................257 7-7-4 Error Codes [5111, 5112, 5115, 5116]....................257 7-7-5 Error Code [5120] ..........................258 7-7-6 Error Code [5201] ..........................258 7-7-7 Error Codes [5201, 5203]........................259 7-7-8 Error Code [5301] Detail Code 115..................... 259 7-7-9 Error Code [5301] Detail Code 117.....................
  • Page 230 7-9-9 Error Code [7113] ..........................292 7-9-10 Error Code [7117] ..........................293 7-9-11 Error Code [7130] ..........................294 - 219 - HWE1314A...
  • Page 231 - 220 - HWE1314A...
  • Page 232: 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 4305 (page 226)
  • Page 233 [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 [101] IPM error (page 250) [104] Short-circuited IPM/Ground fault (page 251) [105] Overcurrent error due to short-circuited motor (page 252) 4250...
  • Page 234 [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 5110 1214 Temperature sensor Heatsink temperature (page 257) fault (THHS) Temperature sensor Continuous heating tem- 1274 (page 256)
  • Page 235 [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 Communication error between device and trans- 6606 (page 267) mission processors 6607 No ACK error (page 268) 6608 No response error...
  • Page 236 [7-1 Error Code and Preliminary Error Code Lists ] Temper- Overload Current effective ature Series Current peak value INV board Outdoor units protection value error protec- name error (Apeak) Imax (Arms) (Arms) tionTOL (°C) PURY-P200YLM-A(1) PURY-P250YLM-A(1) PURY-P300YLM-A(1) INV20Y Standard PURY-P350YLM-A(1) PURY-P400YLM-A(1) PURY-P450YLM-A(1) PURY-P500YLM-A(1)
  • Page 237: 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, 6: Between the control board and the Fan board...
  • Page 238: Error Code [0404]

    [7-2 Error Code Definitions and Solutions: Codes [0 - 999] ] 7-2-2 Error Code [0404] 1. Error code definition A control communication reception error 2. Error definition and error detection method Indoor controller board Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board. 3.
  • Page 239: 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 240: 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 241: 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 242: 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 243: 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 244: 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 245: 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 246: 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 247: 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 248: 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 249: 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 -28°C[-18°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 250: 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] 1. Error code definition Open phase 2. Error definition and error detection method An open phase of the power supply (L1 phase, N phase) was detected at power on. The L3 phase current is outside of the specified range.
  • Page 251: Error Code [4106]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-2 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 252: Error Code [4115]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-4 Error Code [4115] 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 253: Error Code [4121]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-6 Error Code [4121] 1. Error code definition Function setting error 2. Error source, cause, check method and remedy Error source Cause Check method and remedy Outdoor unit (1) Dip switch setting error on the control board Check the SW6-1 setting on the control board (2) Connector connection error on the control Check that nothing is connected to the connector...
  • Page 254: Error Code [4124]

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-7 Error Code [4124] 1. Error code definition Electric system not operate due to damper abnormality 2. Error definition and error detection method When the damper is not located at the designated position. 3.
  • Page 255: Error Codes [4220, 4225, 4226] Detail Code 108

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-8 Error Codes [4220, 4225, 4226] Detail Code 108 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 256: Error Codes [4220, 4225, 4226] Detail Code 109

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 4225 Check the voltage at CNVDC on the Fan board while the inverter is stopped and if it is 420 V or above, check the following items. 1) Check the voltage at CN72 on the control board. →Go to 3). 2) Check the noise filter coil connections and for coil burnout.
  • Page 257: Error Code [4220] Detail Code 110

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-10 Error Code [4220] Detail Code 110 1. Error code definition VDC error (Detail code 110) 2. Error definition and error detection method BUS voltage error When Vdc is equal to or greater than 814 volts (hardware detection) If a voltage drop of the 12 V power supply (CNRY) of the relay on the INV board is detected (INV30YC only) 3.
  • Page 258: Error Code [4220] Detail Code 123

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-12 Error Code [4220] Detail Code 123 1. Error code definition Voltage boost control error (Detail code 123)(outdoor unit) 2. Error definition and error detection method When a drop in power supply voltage or a malfunction in the booster circuit is detected 3.
  • Page 259: Error Codes [4220, 4225, 4226] Detail Code 131

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-14 Error Codes [4220, 4225, 4226] Detail Code 131 1. Error code definition Low bus voltage at startup (Detail code 131) 2. Error definition and error detection method When Vdc 289 V is detected just before the inverter operation.
  • Page 260: Error Code [4230] Detail Code 126

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-16 Error Code [4230] Detail Code 126 1. Error code definition DCL temperature fault (Detail code 126)(outdoor unit) 2. Error definition and error detection method When DCL temperature that equals or exceeds 170°C is detected (applicable to INV30YC only) 3.
  • Page 261: Error Codes [4250, 4255, 4256] Detail Code 101

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-18 Error Codes [4250, 4255, 4256] Detail Code 101 1. Error code definition IPM error (Detail code 101) 2. Error definition and error detection method In the case of 4250 If an overcurrent is detected by the overcurrent detection resistor RSH (R001 when INV30YC) on the INV board.
  • Page 262: Error Codes [4250, 4255, 4256] Detail Code 104

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-19 Error Codes [4250, 4255, 4256] 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 263: Error Codes [4250, 4255, 4256] Detail Code 105

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-20 Error Codes [4250, 4255, 4256] 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.
  • Page 264: Error Code [4250] Detail Codes 121, 128, And 122

    [7-6 Error Code Definitions and Solutions: Codes [4000 - 4999] ] 7-6-22 Error Code [4250] Detail Codes 121, 128, and 122 1. Error code definition DCL overcurrent error (H/W) (Detail code 121 and 128)(outdoor unit) DCL overcurrent error (S/W) (Detail code 122) (outdoor unit) 2.
  • Page 265: 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 266: Error Codes [5103,5104,5105,5106,5107,5109,5111,5112]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-2 Error Codes [5103,5104,5105,5106,5107,5109,5111,5112] 1. Error code definition 5103 Heat exchanger outlet temperature sensor (TH3) fault (Outdoor unit) 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 267 [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 3. Cause, check method and remedy Cause Check method and remedy Thermistor failure Check thermistor resistance. Pinched lead wire Check for pinched lead wire. Torn wire coating Check for wire coating. A pin on the male connector is missing or Check connector.
  • Page 268: Error Code [5110]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-3 Error Code [5110] 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 269: Error Code [5120]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-5 Error Code [5120] 1. Error code definition DCL temperature sensor circuit fault (Detail code 01)(outdoor unit) 2. Error definition and error detection method When an open phase or a short circuit of the temperature sensor is detected immediately before inverter startup or during operation (applicable to INV30YC only) 3.
  • Page 270: Error Codes [5201, 5203]

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-7 Error Codes [5201, 5203] 1. Error code definition 5201 High-pressure sensor fault (BC controller PS1) 5203 Intermediate pressure sensor fault (BC controller PS3) 2. Error definition and error detection method When a pressure sensor reading of 4.06 MPa [589 psi] or above OR 0.98Mpa[142psi] or below is detected, error codes "5201"...
  • Page 271: Error Code [5301] Detail Code 117

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-9 Error Code [5301] Detail Code 117 1. Error code definition ACCT sensor circuit fault (Detail code 117) 2. Error definition and error detection method When an error value is detected with the ACCT detection circuit just before the inverter starts 3.
  • Page 272: Error Code [5301] Detail Code 120

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-11 Error Code [5301] Detail Code 120 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. (Detection of improperly mounted ACCT sensor) 3.
  • Page 273: Error Codes [5305, 5306] Detail Code 132

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-13 Error Codes [5305, 5306] Detail Code 132 1. Error code definition Position detection error at startup (Detail code 132) 2. Error definition and error detection method When a motor sensor has detected an error within 10 seconds after the fan motor has gone into operation. 3.
  • Page 274: Error Codes [5305, 5306] Detail Code 134

    [7-7 Error Code Definitions and Solutions: Codes [5000 - 5999] ] 7-7-15 Error Codes [5305, 5306] 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 275: 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 276: 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 277: 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 278: 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 279: 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 280: 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 281: 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 282: 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 283: 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 284: 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 285: 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 286: 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 287: 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 288: 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 289: 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 290: 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 291: Error Code [6840]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-21 Error Code [6840] 1. Error code definition A control communication reception error 2. Error definition and error detection method Indoor/outdoor unit communication error (Signal receiving error) Abnormal if indoor controller board could not receive any signal normally for 6 minutes after turning the power on Abnormal if indoor controller board could not receive any signal normally for 3 minutes.
  • Page 292: Error Code [6842]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-23 Error Code [6842] 1. Error code definition A control communication transmission/reception hardware trouble 2. Error definition and error detection method Indoor/outdoor unit communication error (Transmitting error) Abnormal if "1" receiving is detected 30 times continuously though indoor controller board has transmitted "0". 3.
  • Page 293: Error Code [6843]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-24 Error Code [6843] 1. Error code definition A control communication start bit detection error 2. Error definition and error detection method Indoor/outdoor unit communication error (Signal receiving error) Abnormal if indoor controller board could not receive any signal normally for 6 minutes after turning the power on.
  • Page 294: Error Code [6846]

    [7-8 Error Code Definitions and Solutions: Codes [6000 - 6999] ] 7-8-25 Error Code [6846] 1. Error code definition Start-up time over 2. Error definition and error detection method Start-up time over The unit cannot finish start-up process within 4 minutes after power on. 3.
  • Page 295: 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. - 284 - HWE1314A...
  • Page 296 [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 3. Error source, cause, check method and remedy, Error source Cause Check method and remedy Outdoor unit (1) The model total of indoor units in the system Check the Qj total (capacity code total) of indoor with one outdoor unit exceeds the following ta- units connected.
  • Page 297: 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 298: 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. - 287 - HWE1314A...
  • Page 299 [7-9 Error Code Definitions and Solutions: Codes [7000 - 7999] ] 3. Error source, cause, check method and remedy Error source Cause Check method and remedy Outdoor unit Number of indoor units connected to the outdoor Check whether the number of units con- terminal block (TB3) for indoor/ outdoor transmis- nected to the outdoor terminal block sion lines exceeds limitations described below.
  • Page 300: 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 301: 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 302: 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 303 [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 304 [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 305 [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 306: Chapter 8 Troubleshooting Based On Observed Symptoms

    Chapter 8 Troubleshooting Based on Observed Symptoms MA Remote Controller Problems..................... 297 8-1-1 The LCD Does Not Light Up....................... 297 8-1-2 The LCD Momentarily Lights Up and Then Goes Off................. 298 8-1-3 "HO" and "PLEASE WAIT" Do Not Go Off the Screen............... 299 8-1-4 Air Conditioning Units Do Not Operate When the ON Button Is Pressed.
  • Page 307 8-10-13 Solutions for the Main Earth Leakage Breaker Trip ................344 8-10-14 Simple Check on Inverter Circuit Components ................... 345 8-10-15 Troubleshooting Problems with IGBT Module ..................345 8-11 Control Circuit........................... 348 8-11-1 Control Power Supply Function Block....................348 8-11-2 Troubleshooting Problems with Outdoor Unit Transmission Power Supply Circuit ......351 8-12 Measures for Refrigerant Leakage ....................
  • Page 308: 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 309: 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 310: 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 311: 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 312: 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 313: 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 314: 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 315: 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 316: 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 317 [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 321) crease due to clogging of the heat exchanger The fan is not properly controlled as the outdoor temperature cannot be precisely detected by the [7-3-3 Error Code [1302] (during operation)](page...
  • Page 318: 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 319 [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 322) (not enough opening). Temperature reading error on the indoor unit piping Check the thermistor.
  • Page 320: 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 321: 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 322 [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 323: 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 324: 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 325: 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 326: 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 327 [8-6 Troubleshooting Solenoid Valve Problems ] Refrigerant circuit diagram 1) P200, P250, P300, P350, P400 Solenoid valve block SV4d SV4b SV4a CV7a LEV5a TH11 CV3a CV2a ST18 CV8a CV9a SV5b ST1 BV1 CV6a CV4a Solenoid valve block(three compartments) SV4d SV4a SV4b SV4b SV4d...
  • Page 328 [8-6 Troubleshooting Solenoid Valve Problems ] 2) P450, P500 SV4c CV7b Solenoid valve block SV4d SV4a SV4b CV7a LEV5a LEV5b TH11 TH12 SV5b ST18 CV4b CV5b CV2b CV5a CV2a CV3a CV6b ST1 BV1 CV6a CV4a Solenoid valve block(three compartments) SV4d SV4a SV4b SV4b...
  • Page 329 [8-6 Troubleshooting Solenoid Valve Problems ] 3) EP200, EP250, EP300, EP350 Solenoid valve block SV4d CV3a SV4a SV4b CV7a LEV5a TH11 CV2a CV5a ST18 CV8a CV9a SV5b ST1 BV1 CV6a CV4a Solenoid valve block(three compartments) SV4d SV4b SV4a SV4b SV4d SV4a is located behind - 318 -...
  • Page 330 [8-6 Troubleshooting Solenoid Valve Problems ] 4) EP400, EP450, EP500 SV4c CV7b Solenoid valve block CV3a SV4d SV4a SV4b CV7a LEV5a LEV5b TH11 TH12 SV5b ST18 CV4b CV5b CV2b CV5a CV6b CV2a ST1 BV1 CV6a CV4a Solenoid valve block(three compartments) SV4d SV4a SV4b...
  • Page 331 [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). It turns off for 3 minutes after defrosting ends and turns off during the heating-only or heating-main operation when SV9 is ON and the value of 63HS1 is greater than 3.5 MPa [507 psi] even if the frequency becomes the minimum.
  • Page 332: 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 680rpm(EP200 model),790rpm(EP250 mod- el), 630rpm (EP300 model), 750rpm (EP350, EP400, EP450 models) at full speed.
  • Page 333: 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 and 5b), Indoor LEV and BC controller LEV The valve opening changes according to the number of pulses.
  • Page 334 [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 335: Possible Problems And Solutions

    [8-8 Troubleshooting LEV Problems ] 8-8-2 Possible Problems and Solutions Malfunction Judgment method Remedy mode Microcomput- Disconnect the control board connector and connect the When the drive circuit Indoor unit, er driver circuit check LED as shown in the figure below. has a problem, replace Outdoor unit failure...
  • Page 336: Coil Removal Instructions

    [8-8 Troubleshooting LEV Problems ] 8-8-3 Coil Removal Instructions (1) Outdoor unit LEV (LEV5a and 5b) 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 337: 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 338 [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 339: 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 340 [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 341: 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 342 [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 343 [8-9 Troubleshooting Problems with Major Components on BC Controller ] Self-diagnosis LED Measurement data Symbol SW4 setting value LEV1 opening LEV2 opening G1, GA1, LEV3 opening (Standard / main) BC controller bypass SH12 outlet superheat BC controller intermediate SC16 part subcool BC controller liquid-side subcool SC11 GB1, HB1...
  • Page 344 [8-9 Troubleshooting Problems with Major Components on BC Controller ] Troubleshooting Flowchart for LEV 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 345: Troubleshooting Flowchart For Solenoid Valves

    [8-9 Troubleshooting Problems with Major Components on BC Controller ] 8-9-4 Troubleshooting Flowchart for Solenoid Valves (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 346 [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 347: 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. - 336 - HWE1314A...
  • Page 348: 8-10 Troubleshooting Inverter Problems

    [8-10 Troubleshooting Inverter Problems ] 8-10 Troubleshooting Inverter Problems 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.
  • Page 349 [8-10 Troubleshooting Inverter Problems ] Error display/failure condition Measure/inspection item Inverter related errors Implement solutions that correspond to the error codes or preliminary 4250, 4255, 4256, 4220, 4225, 4226, 4230, 4240, 4260, 5301, error codes.[7-1 Error Code and Preliminary Error Code Lists](page 5305, 5306, 0403 221) Main power breaker trip...
  • Page 350: Checking The Inverter Board Error Detection Circuit

    [8-10 Troubleshooting Inverter Problems ] 8-10-2 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 351: Checking The Inverter For Damage During Compressor Operation

    [8-10 Troubleshooting Inverter Problems ] 8-10-5 Checking the Inverter for Damage during Compressor Operation Items to be checked Phenomena Remedy Put the outdoor unit into opera- Overcurrent-related problems occur im- Check items 8-10-2 through 8-10-4 tion. mediately after compressor startup. for problems.
  • Page 352: Checking The Converter For Damage During Compressor Operation

    [8-10 Troubleshooting Inverter Problems ] 8-10-6 Checking the Converter for Damage during Compressor Operation Items to be checked Phenomena Remedy Operate the outdoor unit. BUS voltage does not boost (does Replace the inverter board. not change)BUS voltage does not boost to approximately between 650 and 750 VDC, or the following errors are detected.
  • Page 353: Checking The Fan Inverter For Damage At No Load

    [8-10 Troubleshooting Inverter Problems ] 8-10-9 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, 5306) (detail code 132) is detected.
  • Page 354: Checking The Fan Inverter For Damage With Load

    [8-10 Troubleshooting Inverter Problems ] 8-10-10 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 motor.
  • Page 355: Solutions For The Main No-Fuse Breaker Trip

    [8-10 Troubleshooting Inverter Problems ] 8-10-12 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 356: Simple Check On Inverter Circuit Components

    [8-10 Troubleshooting Inverter Problems ] 8-10-14 Simple Check on Inverter Circuit Components Turn off the power of the unit and wait at least 10 minutes, check that the voltage between the FT-P and FT-N terminals on the INV board or between the SC-P and SC-N terminals is 20 VDC or less, and then remove the applicable parts from the control box.
  • Page 357 [8-10 Troubleshooting Inverter Problems ] <INV20Y> 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 358 [8-10 Troubleshooting Inverter Problems ] <INV30YC> Judgment value (reference) Black ( + ) SC-L1 SC-L2 SC-L3 SC-B SC-L FT-R21 SC-N SC-L1 ∞ 5 - 200 Ω SC-L2 ∞ 5 - 200 Ω SC-L3 ∞ 5 - 200 Ω Red (-) SC-B ∞...
  • Page 359: 8-11 Control Circuit

    [8-11 Control Circuit ] 8-11 Control Circuit 8-11-1 Control Power Supply Function Block 1) PURY-P200, P250, P300, P350, P400, EP200, EP250, EP300, EP350YLM-A PURY-P200, P250, P300, P350, P400YLM-A1 Power source system (380 ~ 415 VAC) Control system (5 ~ 30 VDC) INV board Noise filter Compressor...
  • Page 360 [8-11 Control Circuit ] 2) PURY-P450, P500, EP400, EP450YLM-A PURY-P450, P500YLM-A1 Power source system (380 ~ 415 VAC) Control system (5 ~ 30 VDC) INV board Noise filter Compressor Rectifier Smoothing capacitor Inverter Noise filter 380 ~ 415 VAC Fuse Fuse Terminal block for Inverter drive...
  • Page 361 [8-11 Control Circuit ] 3) PURY-EP500YLM-A Power source system (380 ~ 415 VAC) Control system (5 ~ 30 VDC) Detection circuit for the power Rectifier supply to the transmission line Smoothing capacitor Compressor Noise filter Noise filter Rectifier Inverter AC Power Source Fuse (380VAC~415) Terminal block for...
  • Page 362: Troubleshooting Problems With Outdoor Unit Transmission Power Supply Circuit

    [8-11 Control Circuit ] 8-11-2 Troubleshooting Problems with Outdoor Unit Transmission Power Supply Circuit 1) PURY-P200 - P500YLM-A(1), PURY-EP200 - EP450YLM-A Check the voltage at the indoor/outdoor transmission terminal block (TB3) of outdoor unit. 24 ~ 30 VDC Check whether the transmission line is disconnected, check for contact failure, and repair the problem.
  • Page 363 [8-11 Control Circuit ] 2) PURY-EP500YLM-A Check the voltage at the indoor/outdoor transmission terminal block (TB3) of outdoor unit. Check whether the transmission line is disconnected, 24 ~ 30 VDC check for contact failure, and repair the problem. Check the voltage at TB3 after removing transmission line from TB3. Check if the indoor/outdoor transmission line is not 24 ~ 30 VDC short-circuited, and repair the problem.
  • Page 364 [8-11 Control Circuit ] Replace the M-NET board 198 ~ 264 VAC Replace the noise filter. Check the voltage between L3 and N at the power supply terminal block TB1. 198 ~ 264 VAC Replace the noise filter. Check and fix any power supply wiring and main power supply problems found.
  • Page 365: 8-12 Measures For Refrigerant Leakage

    [8-12 Measures for Refrigerant Leakage ] 8-12 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 366 [8-12 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 367: 8-13 Compressor Replacement Instructions

    [8-13 Compressor Replacement Instructions ] 8-13 Compressor Replacement Instructions Follow the procedures below (Steps 1 through 6) 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 368 [8-13 Compressor Replacement Instructions ] Compressor cover Compressor cover (right) (top) 4. Remove the compressor cover (top). 5. Remove the compressor wires, compressor cover, and the right. Protection for the sealing material Suction piping Protection for the compressor cover 6. Place protective materials on the insulation lining of the compressor cover and on the sealing material on the compressor suction pipe to protect them from the torch flame, debraze the pipe, and replace the...
  • Page 369: Solenoid Valve Block And Check Valve Replacement Instructions

    [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] 8-14 Solenoid Valve Block and Check Valve Replacement Instructions 1. R410A CITY MULTI R2 Solenoid valve block ASSY (SV4a, SV4b, SV4d), Check valve (CV4a, CV6a, CV8a, CV9a) replacement instructions * Following instructions show procedures for replacing service parts for Solenoid valve block ASSY (SV4a, SV4b, SV4d), Check valve (CV4a, CV6a, CV8a, CV9a).
  • Page 370 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] 3. Procedures * Precautions for starting replacement • Check that the main power supply is OFF. • Check that no refrigerant is in the outdoor unit. Remove each part according to the 1)-3) procedures on the figure above right before replacing service parts. Mount the removed parts back in place in a reversed procedure of 1)-3) on the figure next page after replacing service parts.
  • Page 371 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] 2) Remove the control box and the partition plate. 3) Remove the cable that is fixed 1) Remove the upper and to the Frame M ASSY and lower service panels remove the Frame M ASSY.
  • Page 372 [8-14 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 previous page. Debraze I-L parts (total 4 places), and remove the Check valve ASSY.
  • Page 373 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] Detailed View of Part A Brazing or debrazing pipes Check valve replacement J (ø15.88) I (ø28.6) CV6a CV4a 2 (ø15.88) 1 (ø28.6) When replacing CV4a: 5 (ø22.2) Remove the brazing 1. 3 (ø28.6) When replacing CV6a: Remove the brazing 2.
  • Page 374 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] 2. R410A CITY MULTI R2 Solenoid valve block ASSY (SV4a, SV4b, SV4d), Check valve (CV4a, CV6a, CV8a) replacement instructions * Following instructions show procedures for replacing service parts for Solenoid valve block ASSY (SV4a, SV4b, SV4d), Check valve (CV4a, CV6a, CV8a).
  • Page 375 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] 3. Procedures * Precautions for starting replacement • Check that the main power supply is OFF. • Check that no refrigerant is in the outdoor unit. Remove each part according to the 1)-3) procedures on the figure above right before replacing service parts. Mount the removed parts back in place in a reversed procedure of 1)-3) on the figure next page after replacing service parts.
  • Page 376 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] 2) Remove the control box. 3) Remove the cable that is fixed to 1) Remove the upper the Frame M ASSY and lower service and remove the Frame M ASSY. panels (Panel FU and FB).
  • Page 377 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] (2) Check valve (CV4a, CV6a, CV8a) replacement procedures Remove the Solenoid valve block ASSY following "(1) Solenoid valve block ASSY (SV4a, SV4b, SV4d) replacement procedures" on the previous page. Debraze H-K parts (total 4 places), and remove the Check valve ASSY. Replace the Check valve (CV4a, CV6a, CV8a) to be serviced while it is removed from the unit.
  • Page 378 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] Detailed View of Part A Brazing or debrazing pipes I (ø15.88) K (ø15.88) *This figure does not show heat exchanger. Check valve replacement CV6a CV4a (ø15.88) When replacing CV4a: Remove the brazing 1. (ø22.2) When replacing CV6a: Remove the brazing 2.
  • Page 379 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] 3. R410A CITY MULTI R2 Solenoid valve block ASSY (SV4a, SV4b, SV4d), Check valve (CV4a, CV6a, CV8a, CV9a) replacement instructions * Following instructions show procedures for replacing service parts for Solenoid valve block ASSY (SV4a, SV4b, SV4d), Check valve (CV4a, CV6a, CV8a, CV9a).
  • Page 380 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] 3. Procedures * Precautions for starting replacement • Check that the main power supply is OFF. • Check that no refrigerant is in the outdoor unit. Remove each part according to the 1)-3) procedures on the figure above right before replacing service parts. Mount the removed parts back in place in a reversed procedure of 1)-3) on the figure next page after replacing service parts.
  • Page 381 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] 2) Remove the control box and the partition plate. 3) Remove the cable that is fixed 1) Remove the upper and to the Frame M ASSY and lower service panels remove the Frame M ASSY.
  • Page 382 [8-14 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 previous page. Debraze I-L parts (total 4 places), and remove the Check valve ASSY.
  • Page 383 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] Detailed View of Part A Brazing or debrazing pipes Check valve replacement J (ø15.88) I (ø28.6) CV6a CV4a 2 (ø15.88) 1 (ø28.6) When replacing CV4a: 5 (ø22.2) Remove the brazing 1. 3 (ø28.6) When replacing CV6a: Remove the brazing 2.
  • Page 384 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] 4. R410A CITY MULTI R2 Solenoid valve block ASSY (SV4a, SV4b, SV4d), Check valve (CV4a, CV6a, CV8a) replacement instructions * Following instructions show procedures for replacing service parts for Solenoid valve block ASSY (SV4a, SV4b, SV4d), Check valve (CV4a, CV6a, CV8a).
  • Page 385 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] 3. Procedures * Precautions for starting replacement • Check that the main power supply is OFF. • Check that no refrigerant is in the outdoor unit. Remove each part according to the 1)-3) procedures on the figure above right before replacing service parts. Mount the removed parts back in place in a reversed procedure of 1)-3) on the figure next page after replacing service parts.
  • Page 386 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] 2) Remove the control box. 3) Remove the cable that is fixed to 1) Remove the upper the Frame M ASSY and lower service and remove the Frame M ASSY. panels (Panel FU and FB).
  • Page 387 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] (2) Check valve (CV4a, CV6a, CV8a) replacement procedures Remove the Solenoid valve block ASSY following "(1) Solenoid valve block ASSY (SV4a, SV4b, SV4d) replacement procedures" on the previous page. Debraze H-K parts (total 4 places), and remove the Check valve ASSY. Replace the Check valve (CV4a, CV6a, CV8a) to be serviced while it is removed from the unit.
  • Page 388 [8-14 Solenoid Valve Block and Check Valve Replacement Instructions ] Detailed View of Part A Check valve replacement CV4a CV6a (ø15.88) When replacing CV4a: Remove the brazing 1. (ø22.2) When replacing CV6a: Remove the brazing 2. When replacing CV8a: (ø22.2) Remove the brazing 3.
  • Page 389: 8-15 Bc Controller Maintenance Instructions

    [8-15 BC Controller Maintenance Instructions ] 8-15 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 Service panel Loosen...
  • Page 390 [8-15 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 391 [8-15 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 392: Troubleshooting Problems Using The Led Status Indicators On The Outdoor Unit

    [8-16 Troubleshooting Problems Using the LED Status Indicators on the Outdoor Unit ] 8-16 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.
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  • Page 394: 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........................385 9-1-1 How to Read the LED ......................... 385 9-1-2 Initial LED Display..........................386 9-1-3 Clock Memory Function ........................387 LED Status Indicators Table ......................388 - 383 - HWE1314A...
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  • Page 396: 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 397: 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 398: 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 399: Led Status Indicators Table

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  • Page 434 Service Handbook Model PURY-P200, P250, P300, P350, P400, P450, P500YLM-A(1) PURY-P400, P450, P500, P550, P600, P650, P700, P750, P800, P850, P900YSLM-A(1) PURY-EP200, EP250, EP300, EP350, EP400, EP450, EP500YLM-A PURY-EP500,EP550, EP600, EP650, EP700, EP750, EP800, EP850, EP900YSLM-A New publication effective Jan. 2015 Specifications subject to change without notice HWE1314A...