Toshiba MCY-MHP0404HS(J)-E Service Manual
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SERVICE MANUAL

AIR-CONDITIONER (MULTI TYPE)
OUTDOOR UNIT

Model name:

MCY-MHP0404HS(J)-E/0504HS(J)-E/0604HS(J)-E
MCY-MHP0404HS-TR/0504HS-TR/0604HS-TR
MCY-MHP0404HS(J)/0504HS(J)/0604HS(J)
MCY-MHP0404HS-ID/0504HS-ID/0604HS-ID
MCY-MHP0404HS-A/0504HS-A/0604HS-A
This service manual provides relevant explanations about new outdoor unit.
Please refer to the following service manuals for each indoor units.
<4-way Cassette Type>
(MMU-AP****H)
(MMU-AP***4HP*)
(Made in Thailand model)
<2-way Cassette Type>
(MMU-AP****WH*)
<Concealed Duct Standard Type>
(MMD-AP***6BHP*)
(Made in Thailand model)
<Slim Duct Type>
(MMD-AP024, A0274SPH*)
<Concealed Duct High Static Pressure Type>
(MMD-AP***6HP*)
(Made in Thailand model)
<High-wall Type>
(MMK-AP***4MH*)
(Made in Thailand model)
(MMK-AP***3H*)
(Made in Thailand model)
<Console Type>
(MML-AP****NH*)
(Made in Thailand model)
<Ceiling Type>
(MMC-AP***7HP*)
(Made in Thailand model)
<Floor Standing Type>
(MMF-AP***6H*)
<Other indoor units>
(MM*-AP*****H*)
Service Manual No.
A08-004
SVM-13011
A10-007
SVM-14069
A12-005
SVM-15032
SVM-09059
A10-034
SVM-11036
SVM-13085
A10-1420
A10-033
FILE NO. A10-1510

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Summary of Contents for Toshiba MCY-MHP0404HS(J)-E

  • Page 1: Service Manual

    FILE NO. A10-1510 SERVICE MANUAL AIR-CONDITIONER (MULTI TYPE) OUTDOOR UNIT Model name: MCY-MHP0404HS(J)-E/0504HS(J)-E/0604HS(J)-E MCY-MHP0404HS-TR/0504HS-TR/0604HS-TR MCY-MHP0404HS(J)/0504HS(J)/0604HS(J) MCY-MHP0404HS-ID/0504HS-ID/0604HS-ID MCY-MHP0404HS-A/0504HS-A/0604HS-A This service manual provides relevant explanations about new outdoor unit. Please refer to the following service manuals for each indoor units. Service Manual No.
  • Page 2: Table Of Contents

    Contents Precautions for safety ..........7 1 Product summary .
  • Page 3 8 Test operation ............8 Test operation .
  • Page 4 9-7. Sensor characteristics ............147 9-8.
  • Page 5 The qualified service person is a person who installs, repairs, maintains, relocates and removes the air conditioners made by Toshiba Carrier Corporation. He or she has been trained to install, repair, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation...
  • Page 6 Definition of Protective Gear When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and ‘safety’ work clothing. In addition to such normal protective gear, wear the protective gear described below when undertaking the special work detailed in the table below. Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns, electric shocks and other injuries.
  • Page 7: Warning Indications On The Air Conditioner Unit

    Warning indications on the air conditioner unit [Confirmation of warning label on the main unit] Confirm that labels are indicated on the specified positions If removing the label during parts replace, stick it as the original. WARNING ELECTRICAL SHOCK HAZARD Disconnect all remote electric power supplies before servicing.
  • Page 8: Precautions For Safety

    Precautions for safety The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. DANGER Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker for both the indoor and outdoor units to the OFF position.
  • Page 9 WARNING Before starting to repair the air conditioner, read carefully through the Service Manual, and repair the air conditioner by following its instructions. Only qualified service person is allowed to repair the air conditioner. Repair of the air conditioner by unqualified person may give rise to a fire, electric shocks, injury, water leaks and/or other problems.
  • Page 10 If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts with the electrical control box cover of one or more of the indoor units and the service panel of the outdoor unit removed in order to find out exactly where the trouble lies, put a sign in place so that no-one will approach the Do not bring a work location before proceeding with the work.
  • Page 11 When the refrigerant gas leaks, find up the leaked position and repair it surely. If the leaked position cannot be found up and the repair work is interrupted, pump-down and tighten the service valve, otherwise the refrigerant gas may leak into the room. The poisonous gas generates when gas touches to fire such as fan heater, stove or cooking stove though the refrigerant gas itself is innocuous.
  • Page 12 Only a qualified installer or qualified service person is allowed to install the air conditioner. If the air conditioner is installed by an unqualified individual, a fire, electric shocks, injury, water leakage, noise and/or vibration may result. Before starting to install the air conditioner, read carefully through the Installation Manual, and follow its instructions to install the air conditioner.
  • Page 13: Declaration Of Conformity

    Declaration of Conformity Manufacturer: Toshiba Carrier Air Conditioning (China) Co., Ltd. Building 1, No.60, 21st Avenue, Baiyang Street, Hangzhou Economic and Technological Development Area China Authorized Representative / Nick Ball TCF holder: Toshiba EMEA Engineering Director Toshiba Carrier UK Ltd.
  • Page 14 New refrigerant (R410A) This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety caution concerned to new refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed.
  • Page 15 4. Tools (1) Required Tools for R410A Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types. 1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22)) 2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22) 3) Tools commonly used for R410A and for conventional refrigerant (R22) The table below shows the tools exclusive for R410A and their interchangeability.
  • Page 16: Product Summary

    Product summary 1-1. Outdoor unit Corresponding HP Power supply MCY-MHP0404HS-E MCY-MHP0504HS-E MCY-MHP0604HS-E MCY-MHP0404HSJ-E MCY-MHP0504HSJ-E MCY-MHP0604HSJ-E Power supply MCY-MHP0404HS-TR MCY-MHP0504HS-TR MCY-MHP0604HS-TR Single-phase MCY-MHP0404HS-ID MCY-MHP0504HS-ID MCY-MHP0604HS-ID 220-240V (50Hz) MCY-MHP0404HS-A MCY-MHP0504HS-A MCY-MHP0604HS-A Power supply MCY-MHP0404HS MCY-MHP0504HS MCY-MHP0604HS Single-phase MCY-MHP0404HSJ MCY-MHP0504HSJ MCY-MHP0604HSJ 220-240V (50Hz) 220V (60Hz) Cooling capacity (kW) *...
  • Page 17: Branching Joints And Headers

    1-3. Branching joints and headers Model name Appearance i o j RBM-BY55E 1-4. PMV kit Model type Indoor unit capacity type Appearance 005 to 014 type 015 to 027 type...
  • Page 18: Construction Views

    Construction views...
  • Page 19: Wiring Diagram

    Wiring diagram MCY-MHP0404HS(J)-E/0504HS(J)-E/0604HS(J)-E MCY-MHP0404HS-TR/0504HS-TR/0604HS-TR MCY-MHP0404HS(J)/0504HS(J)/0604HS(J) MCY-MHP0404HS-ID/0504HS-ID/0604HS-ID...
  • Page 20 MCY-MHP0404HS-A, MHP0504HS-A, MHP0604HS-A t° t° t° t° t°...
  • Page 21: Parts Rating

    Parts rating 4-1. Outdoor unit DA422A3T-20MD1 Output: 5.60 kW STF-H01AJ1736A1 AC220-240V, 50/60Hz 4-way valve coil FQ-G593 AC220-240V, 50/60Hz SV2, SV4, SV5 valve coil l i o PQ-M10012-000230 DC12V Pressure sensor (For high pressure) AAG-M35YLTF-1 DC5V 0-3.73MPa Pressure sensor (For low pressure) AAG-L25YLTF-1 DC5V 0-0.98MPa High-pressure SW...
  • Page 22: Parts Layout In Outdoor Unit

    4-4. Parts layout in outdoor unit SV5 valve SV2 valve SV4 valve 4-way valve Low pressure sensor High pressure sensor High-pressure sw TD sensor TL sensor TS sensor (Pulse Motor Valve) Check joint (Low pressure) Check joint (High pressure) sensor sensor...
  • Page 23: Parts Layout In Inverter Assembly

    4-5. Parts layout in inverter assembly 4-5-1. Except “MCY-MHP****HS-A” Model Comp-IPDU P.C.board (MCC-1647) Fan-IPDU P.C.board (MCC-1597) Noise Filter P.C.board (MCC-1551) Power supply terminal block Communication terminal block Interface P.C. board (MCC-1639)
  • Page 24: For "Mcy-Mhp****Hs-A" Model

    4-5-2. For “MCY-MHP****HS-A” Model Comp-IPDU P.C.board (MCC-1647) Fan-IPDU P.C.board (MCC-1597) Noise Filter P.C.board (MCC-1551) Demand response P.C.board (MCC-1653) Transformer (TT-02-2-R) Power supply terminal block Communication terminal block Interface P.C. board (MCC-1639)
  • Page 25: Outdoor (Inverter) Print Circuit Board

    4-6. Outdoor (inverter) print circuit board 4-6-1. Interface P.C. board (MCC-1639) Option input/output Jumper select CN508 CN510 CN513 CN511 CN509 CN512 SW 04,05,15 7-segment LED SW 06,07,09,10 SW 01,02,03 SW 11,12,13,14 PS sensor CN500 SW 16,17 PD sensor CN501 PMV 1 output CN300 Sensor input TL CN523 TS CN505 TE CN520 TD CN502 TO CN507...
  • Page 26: Inverter P.c. Board For Compressor (Mcc-1647) A3-Ipdu

    4-6-2. Inverter P.C. board for compressor (MCC-1647) A3-IPDU Power supply Power supply Input (Reactor) Input (Neutral) Power supply CN05(Black and Red) CN03(White) Input (Live) CN04(Black) Power supply output (Reactor) CN12(Red) Power supply output (Reactor) CN11(Black) High-pressure switch input Compressor output CN500(Black) W-phase CN203(Black)
  • Page 27: Fan Motor Ipdu (Mcc-1597) For Upper Fan And Lower Fan

    4-6-3. Fan motor IPDU (MCC-1597) for upper fan and lower fan CN700 (Blue) CN500 (Red) CN750 (White) Fan motor output (Upper fan) Power supply input and reactor connecting Fan motor output (Lower fan) CN504 (Blue) CN505 (Red) CN502 (White) UART communication UART communication DC280 V input...
  • Page 28: Noise Filter (Mcc-1551)

    4-6-4. Noise filter (MCC-1551) CN04 (White) CN02 (White) Power supply output (Neutral) Line Filter Power supply input (Neutral) CN03 (Black) CN08 (White) CN01 (Black) Power supply output (Live) Power supply output Power supply input...
  • Page 29: Refrigerant Piping Systematic Drawing

    Refrigerant piping systematic drawing Outdoor unit Sensor (TO) Heat exchanger Sensor (TE) Capillary tube Solenoid valve (SV5) Strainer 4-Way valve Sensor (TS) Solenoid valve (SV4) Strainer Check joint Solenoid valve High pressure Check joint (SV2) sensor Sensor (TL) High pressure Low pressure sensor Capillary...
  • Page 30 Explanation of functional parts Functional part na (Hot gas bypass) (Connector CN311 : White) 1) Low pressure release function 2) High pressure release function 3) Gas balance function during stop time 4) Hot gas bypass into accumulator (Start compensation valve of compressor) Solenoid valve (Connector CN312: Red) 1) For gas balance start...
  • Page 31: Control Outline

    Control outline Outdoor unit Item Description of operation, numerical data, and other information Remarks 1. Pulse PMV1 control motor valve 1) During air conditioner operation, the pulse count of a PMV (pulse motor valve) is (PMV) controlled between 30 and 500. control 2) During cooling, the PMV opening is controlled on the basis of measurements provided by the TL temperature sensor and the PD pressure sensor (subcool...
  • Page 32 Item Description of operation, numerical data, and other information Remarks 2. Outdoor 2. Heating fan control fan control 1) Outdoor fan speed (mode) is controlled on the basis of measurements provided by (continued) the TE temperature sensor. 2) If TE > 25 °C is continuously detected for 5 minutes, the operation may stop. 3) For a specified period after air conditioner startup and during defrosting, this control is disabled.
  • Page 33 Item Description of operation, numerical data, and other information Remarks 1. SV2 gas balance control 6. Release This control function is aimed at achieving gas balance by opening SV2 while valve control compressor is turned off so as to reduce its startup load the next time it is turned on.
  • Page 34 Item Description of operation, numerical data, and other information Remarks 7. Frequency High pressure release control release This function is to correct the operation command of the compressor and suppress the control rise of high pressure. 1) Control contents The operation frequency is decreased by 1 step when PD pressure 3.4 MPa.
  • Page 35 Item Description of operation, numerical data, and other information Remarks 8. A3-IPDU 2. Heat sink temperature detection control A3-IPDU is provided with a TH sensor. control 1) This control performs the IGBT overheat protection by the detection of the TH (continued) sensor in Module Q201 for compressor driven in A3-IPDU.
  • Page 36 <Other points to note> Cooling operation under low outside temperature conditions 1) If pressure falls to extremely low levels, indoor units may be shut down via freeze prevention control based on the indoor TC sensor. 2) If pressure falls to extremely low levels, frequency may be reduced via cooling capacity control. 3) When the discharge temperature sensor reading falls below 60 °C, the frequency may be increased above the level called for by the command received from the indoor unit.
  • Page 37: Applied Control For Outdoor Unit

    Applied control for outdoor unit The outdoor fan high static pressure support and priority operation mode setting (cooling / heating / number of units / or priority indoor unit) functions are made available by setting relevant switches provided on the interface P.C. board of the outdoor unit.
  • Page 38 (2) Indoor unit setup method for priority indoor unit mode The setting can be changed only when the system is at rest. (Be sure to turn off the system prior to this operation.) Push the buttons simultaneously and hold for at least 4 seconds.
  • Page 39: Applied Control Of Outdoor Unit

    7-3. Applied control of outdoor unit 7-3-1. Optional P.C. board of outdoor unit installation Placing position Install the optional P.C. boards on top of the interface P.C. board in the outdoor unit. Be sure to turn off the power switch before installing. (1) Holes for installing supports are provided on the top of the interface P.C.
  • Page 40 Optional control P.C. boards provide access to a range of functions as listed below. Control P.C. board to be used Outdoor unit interface P.C. board setting* Jumper to be PCDM4E PCMO4E PCIN4E Connector No. DIP SW No. removed Power peak-cut control (Standard) –...
  • Page 41: Power Peak-Cut Control (Standard)

    7-3-2. Power peak-cut control (standard) L1: Display lamp ensuring power peak cut control Outdoor unit Locally procured Optional PCB Power Display supply Outdoor unit relay interface PCB Shield [OPERATION] wire PJ17 CN513 SW07 [ON] [OFF] Bit 2 OFF Shield Connection cable wire For SW1 and SW2, be sure to provide no- voltage contacts for each terminal.
  • Page 42: Power Peak-Cut Control (Extended)

    <SW07 Bit 2 OFF (two-step control)> Power peak-cut control is enabled as long as SW1, as shown on the wiring diagram, is ON (continuously). Jumper wire Input 0 % (forced stop) 60 % capacity (upper limit regulated) 100 % (normal operation) 100 % (normal operation) Note 1: Specifications of display relay contact The terminal for display output ([Operation] terminal) must satisfy the following electrical rating.
  • Page 43: Snowfall Fan Control

    7-3-4. Snowfall fan control Outdoor unit Locally procured Connection Outdoor unit Optional PCB Snowfall sensor cable interface PCB COOL Shield HEAT wire SW1: Snowfall detection switch (snowfall sensor) Operation An external snowfall signal turns on the outdoor unit fan. Terminal Input signal Operation Snowfall fan control...
  • Page 44: Night Operation (Sound Reduction) Control

    7-3-6. Night operation (sound reduction) control Outdoor unit Locally procured Connection Outdoor unit Optional PCB cable interface PCB COOL HEAT Shield wire SW1: Night time signal switch Operation This function decreases noise at night or other times as necessary. Terminal Input signal Operation Night time control...
  • Page 45: Operation Mode Selection Control

    7-3-7. Operation mode selection control Outdoor unit Locally procured Connection Outdoor unit Optional PCB cable interface PCB COOL HEAT Shield wire SW1: Cooling mode specified input switch SW2: Heating mode specified input switch NOTE SW1: COOL mode selection switch SW2: HEAT mode selection switch Input signal Operation Remarks...
  • Page 46: Error / Operation Output

    7-3-8. Error / Operation output Locally procured Outdoor unit (See “NOTE”) Outdoor unit Optional PCB interface PCB OUTPUT1 SW16 OUTPUT2 OUTPUT3 Shield wire Operation In-operation output: An in-operation indication signal is output as long as at least one indoor unit is in operation in the line.
  • Page 47: Demand Response For Australia

    7-4. Demand response for Australia Models for Australia are appliances for DRED (Demand Response Enabling Device) that complies with AS/NZS 4755.3.1. These models support only DRM1. AS/NZS 4755 DRM1 DRM2 DRM3 Demand response mode Description DRM1 Compressor off DRM2 Not available DRM3 Not available DRED installation position...
  • Page 48 Demand response P.C. board DRC signal reception connector CN01 DRC signal Transformer output transmission connector CN102 connector CN104,CN105, DB100 CN106 LED indicator D101 Power supply protection fuse F100 (250V/3.15A) Transformer input Power supply input connector CN101 connector CN100...
  • Page 49: Test Operation

    Test operation 8-1. Procedure and summary of test operation A test operation is executed with the following procedure.When a problem occurs at any step, remove the causes of the problem referring to “9 Troubleshooting.” This main power supply check shall be done before operation Checks before test operation switch turns ON This main power supply check shall be done before operation...
  • Page 50: Check Items Before Test Operation (Before Powering-On)

    8-2. Check items before test operation (before powering-on) Prior to the test operation, check the following items to verify there are no problems with the installation work. Main check items for electric wiring The communication system differs from that of R22 or R407 refrigerant “Modular Multi system” air conditioners. Check wiring points again carefully.
  • Page 51 (2) In the case that a central control system is connected (before address setup) Central remote controller (1) (2) To other refrigerant line Other refrigerant line SW13 SW14 CN10 SW13 SW14 Outdoor unit CN10 CN02 SW30 CN02 SW30 To indoor unit Indoor unit Remote Remote...
  • Page 52 Checklist 1 Using Checklist 1, check that there are no problems with the installation work. Is the capacity of the circuit breaker Outdoor unit Indoor unit (Earth leakage breaker) appropriate? Is the gauge of the Outdoor unit Indoor unit power cable correct? n i l Central control system connection terminals (U3, U4) Is the power of indoor units supplied collectively?
  • Page 53 Checklist 2 Calculate the additional amount of refrigerant from the following: Additional refrigerant Additional refrigerant Compensation by Real length of liquid charge amount per 1 m charge amount at local outdoor HP pipe liquid pipe site (Table 2) (Table 1) Firstly enter the total length for each liquid pipe in the following table and then calculate the additional amount of refrigerant by pipe length.
  • Page 54: Check At Main Power-On

    8-3. Check at main power-on After turning on the main power of the indoor units and outdoor unit in the refrigerant line to conduct a test operation, check the following items in each outdoor and indoor unit. (After turning on the main power, be sure to check in order: indoor unit outdoor unit.) <Check on the outdoor unit>...
  • Page 55: Address Setup

    8-4. Address setup This product requires address setup before operation. Follow this procedure for address setup. 8-4-1. Precautions (1) Address setup is not performed simply by turning on the power supply. (2) For indoor units, address setup can be done either by manual address setup or by automatic address setup: Automatic address setup: Setup from SW15 on the interface P.C.
  • Page 56: Address Setup Procedure

    8-4-3. Address setup procedure (Single refrigerant line): ress setting procedure 1 Central control of 2 or more refrigerant lines: go to Address setting procedure 2 When controlling a single refrigerant line When controlling 2 or more refrigerant lines (Example) centrally centrally Address setting procedure...
  • Page 57 (Example) Controlling 2 or more refrigerant lines as a group Outdoor Outdoor System wiring diagram Indoor Indoor Indoor Indoor (Group control) Remote controller Address setting procedure 2 Set a line address for each system using SW 13 and 14 on the interface P.C. board on the outdoor unit of each system.
  • Page 58 Be sure to disconnect the relay connectors CN10 which mounted interface P.C. board from CN02, on all the outdoor unit that will be connected to the central control. CN02 CN10 Communication terminal board Turn on indoor units first, and then turn on outdoor unit. About 1 minute after turning the power on, confirm that the 7-segment display on the interface U.
  • Page 59 Set the central control address. (For the setting of the central control address, refer to the installation manuals of the central control devices.) Outdoor unit interface P.C. board 7-segment display SW30 * Outdoor units are connected to the same central control, except the outdoor unit with the smallest line address number.
  • Page 60 Switch setting (setting example when controlling 2 or more refrigerant lines centrally) Outdoor units (setting manually) *The items in bold font must be set manually. Outdoor unit’s Outdoor unit Outdoor unit Outdoor unit Factory default interface P.C. board SW13, 14 (Line (system) address) DIP switch 2 of SW30 (Terminator of indoor /...
  • Page 61 Manual address setting with the remote controller Procedure when setting indoor units’ addresses first under the condition that indoor wiring has been completed and outdoor wiring has not been started (manual setting using the remote controller) Wiring example of 2 refrigerant lines Refrigerant line 2 Refrigerant line 1 Outdoor...
  • Page 62 <Line (system) address> Push the TEMP. buttons repeatedly to set the CODE No. to Push the TIME buttons repeatedly to set a line address. (Match the address with the address on the interface P.C. board of the outdoor unit in the same refrigerant line.) Push button.
  • Page 63 Confirming the indoor unit addresses and the position of an indoor unit using the remote controller Confirming the numbers and positions of indoor units To see the indoor unit address of an indoor unit having location data. When the unit is individual (the indoor unit is paired with a wired remote controller one-to-one), or it is a group-controlled one.
  • Page 64 (Execute it while the units are stopped.) The indoor unit numbers in a group are indicated one after another. The fan and louvers of the indicated units are activated. Push and hold the buttons at the same time for more than 4 seconds. •...
  • Page 65 To select another line address Push the button to return to step • After returning to step , select another line address and check the indoor unit addresses of the line. Push the button to finish the procedure. Changing the indoor unit address using a remote controller To change an indoor unit address using a wired remote controller.
  • Page 66 To change all the indoor unit addresses using an arbitrary wired remote controller. (The method is available when the addresses have already been set automatically.) (When communication wirings of 2 or more refrigerant lines are interconnected for central control) NOTE You can change the addresses of indoor units in each refrigerant line using an arbitrary wired remote controller.
  • Page 67 Push the TIME buttons repeatedly to change the value of the indoor unit address in SET DATA. Change the value in SET DATA to that of a new address. Push the button to confirm the new address on SET DATA. Push the button (left side of the button) repeatedly to select another address to change.
  • Page 68 Turn on the indoor and outdoor units of the refrigerant line to be initialized in addresses. About one minute after turning on the power, confirm that the 7-segment display on the outdoor unit indicates “U.1. - - -” and operate the interface P.C. board on the outdoor unit of the refrigerant line as follows.
  • Page 69 In the case of an increase in address-undefined indoor units (extension, etc.) To set up the indoor address of a unit with an address that is undefined due to the extension of indoor units or replacement of P.C. board, etc., follow the methods below. Method 1 Set up an address individually from a wired remote controller.
  • Page 70: Check After Address Setup When Central Control System Is Connected

    8-4-4. Check after address setup when central control system is connected When the central control system is connected, check that the following setup has finished after address setup. Central remote controller To other refrigerant line Outdoor unit Other refrigerant line Outdoor unit Outdoor unit SW13 SW14...
  • Page 71: Troubleshooting In Test Operation

    8-5. Troubleshooting in test operation If there are phenomena such as the output of a check code or the remote controller is not accepted when powered- on after wiring work or during address setup operation, the following causes are considered. 8-5-1.
  • Page 72: Operation From The Indoor Remote Controller Is Not Accepted, And A Check Code Is Displayed On The 7-Segment Display Of The Interface P.c. Board Of The Outdoor Unit

    8-5-2. Operation from the indoor remote controller is not accepted, and a check code is displayed on the 7-segment display of the interface P.C. board of the outdoor unit. Outdoor Indoor remote unit 7- controller segment status display Line addresses and indoor addresses of all the connected Set up addresses.
  • Page 73: In Checking The Number Of Connected Outdoor Units And Connected Indoor Units After

    8-5-4. In checking the number of connected outdoor units and connected indoor units after address setup, a lower number of connected units is displayed. (There are outdoor / indoor units that do not operate in a test operation.) Miswiring of communication lines between indoor units After modification of wiring, set up the addresses again and The number of connected indoor...
  • Page 74: Test Operation Check

    8-6. Test operation check 8-6-1. Fan check START Check code appears Push the Start / Stop button on the remote controller. When a check code has been displayed on the remote controller, remove the cause of the check code, referring to "Check code and check position Check code displayed on remote controller and...
  • Page 75: Cooling / Heating Test Operation Check

    8-6-2. Cooling / Heating test operation check The cooling / heating test operation check can be performed on both the indoor remote controller and the outdoor unit interface P.C. board. (1) Test operation start / stop operation Test operation from the indoor remote controller Wired remote controller: Refer to the items below in “Test operation”...
  • Page 76 Wireless remote controller (4-way Cassette Wireless remote controller (Ceiling type and type) 1-way Cassette SH type) Procedure Operation content Procedure Operation content When Temporary button is pushed for 10 Start seconds or more, “Pi!” sound is heard and Push Temporary operation button. the operation changes to a forced cooling •...
  • Page 77 (2) Test operation START Refer to "Test operation procedure" Test operation for one indoor unit of the indoor remote controller. The operation does not start for approximately 3 minutes after Operation starts powering-on or stopping operation. Note: After powering-on, it may require up to 10 minutes to start the operation due to the initial communications of the system.
  • Page 78 Note 1: Criteria for the difference between suction and discharge temperatures (1) Cooling operation After operating for a minimum of 30 minutes in “COOL” mode, if the T dry bulb temperature difference between suction and discharge air of the indoor unit is 8 °C or more, it is normal. (2) Heating operation After operating for a minimum of 30 minutes in “HEAT”...
  • Page 79: Service Support Function

    8-7. Service support function 8-7-1. Check function for connecting of refrigerant and control lines This function is provided to check misconnection of the refrigerant pipes and the control transmission line (Wiring over lines) between indoor unit and outdoor unit by using the switch on the interface P.C. board of the outdoor unit. However, be sure to check the following items prior to executing this check function.
  • Page 80 Operation start (7-segment display) Press the push-switch SW04 on the interface P.C. board of the outdoor unit for 2 seconds or more. The operation starts. Cooling Operation Check that 7-segment display [B] shows [CC] for Heating cooling and [ HH] for heating. Confirmation of check results (1) (7-segment display) This check operation...
  • Page 81: Function To Start / Stop (On / Off) Indoor Unit From Outdoor Unit

    8-7-2. Function to start / stop (ON / OFF) indoor unit from outdoor unit The following functions of the indoor unit can start or stop by the switches on the interface P.C. board of the outdoor unit. Cooling test Changes the mode of all the [Setup] Section A Section B...
  • Page 82: Operation Procedure

    (1) Cooling test operation function This function is provided to change collectively the mode of all the indoor units connected to the same system for the cooling test operation mode, by using switches on the interface board of the outdoor unit. <Operation procedure>...
  • Page 83 (2) Heating test operation function This function is provided to change collectively the mode of all the indoor units connected to the same system for the heating test operation mode, by using switches on the interface board of the outdoor unit. <Operation procedure>...
  • Page 84 (3) Batch start / stop (ON / OFF) function This function is provided to start / stop collectively all the indoor units connected to the same system by using switches on the interface board of the outdoor unit. <Operation procedure> Be sure to turn on the power at indoor Power ON side before power-ON of outdoor unit.
  • Page 85 (4) Individual start / stop (ON / OFF) individual test operation function This function is provided to start / stop (ON / OFF) individually each indoor unit connected to the same system by using switches on the interface board of the outdoor unit. Set SW01 [16] and set SW02, SW03 to indoor address No.
  • Page 86: Checkcode Clearing Function

    8-7-3. Check code clearing function (1)Clearing from the main remote controller Check code clearing in outdoor unit Check code of the outdoor unit currently detected is cleared by the unit of one refrigerant circuit system to which the indoor units operated by the remote controller is connected. (Check code of the indoor unit is not cleared.) For clearing check codes, the service monitor function of the remote controller is used.
  • Page 87 (2)Clearing check code by using switches on the interface board of the outdoor unit Using the switches on the interface P.C. board of the outdoor unit, this function is to clear the currently detected check code for each refrigerant circuit system without resetting the power supply. Check codes in both outdoor and indoor units are once cleared, and check code detection is performed again.
  • Page 88: Remote Controller Distinction Function

    8-7-4. Remote controller distinction function This function is provided to distinguish the remote controller connected to the indoor unit from the outdoor unit for a refrigerant circuit system by using switches on the interface P.C. board of the outdoor unit. <Distinction procedure>...
  • Page 89: Pulse Motor Valve (Pmv) Forced Open / Close Function In Indoor Unit

    8-7-5. Pulse motor valve (PMV) forced open / close function in indoor unit This function is provided to open or close forcedly PMV for 2 minutes in all the indoor units by the switch operation on the interface P.C. board of the outdoor unit. This function is also used to open PMV fully when turning off the power and executing an operation.
  • Page 90: Solenoid Valve Forced Open / Close Function In Outdoor Unit

    8-7-7. Solenoid valve forced open / close function in outdoor unit This function is provided to forcedly open each solenoid valve mounted in the outdoor unit by the switch operation on the interface P.C. board in the outdoor unit. Use this function to check there is no refrigerant clogging with ON / OFF operation of the solenoid valve.
  • Page 91: Fan Operation Check In Outdoor Unit

    8-7-8. Fan operation check in outdoor unit This function is provided to check the fan operation of the outdoor unit by using switches on the interface P.C. board in the outdoor unit. The frequency of the fan speed can be controlled by setting of the switches. Use this function to check the operation or abnormal sound in the fan system.
  • Page 92: Manual Adjustment Function Of Outside Temperature (To) Sensor

    8-7-9. Manual adjustment function of outside temperature (TO) sensor This function is provided to fix TO sensor value manually by the switch operation on the interface P.C. board in the outdoor unit. When the unit stops abnormally due to TO sensor failure, etc, an emergent operation is available by setting up the value manually to position near the current outside temperature.
  • Page 93: Refrigerant Leakage Detection

    8-7-10. Refrigerant leakage detection The refrigerant leakage can be confirmed by using the switches on Interface PCB of the outdoor unit. If there is a leak, the location must be found in order to recover the refrigerant. After that, implement appropriate countermeasure and refill the refrigerant to its standard volume.
  • Page 94: Service Support Function List

    8-7-11. Service support function list SW01 SW02 SW03 7-segment di Refrigerant circuit and control communication line check function (Cooling [J . C] operation) Refrigerant circuit and control communication line check function (Heating operation) l l u l l o n i l e l l v i t .
  • Page 95: Monitor Function Of Remote Controller Switch

    8-7-12. Monitor function of remote controller switch When using a remote controller with the model name RBC-AMT32E, the following monitor functions can be used. Calling of service monitor display screen <Content> The sensor temperature or operation status of the remote controller, indoor unit, or the outdoor unit can be known by calling up the service monitor mode from the remote controller.
  • Page 96: Troubleshooting

    Troubleshooting 9-1. Overview (1) Before engaging in troubleshooting (a) Applicable models Indoor units: MMO-APOOO, Outdoor units: MCY-MHPOOO4 (b) Tools and measuring devices required Screwdrivers (Philips, flat head), spanners, long-nose pliers, nipper, pin to push reset switch, etc. Multimeter, thermometer, pressure gauge, etc. (c) Things to check prior to troubleshooting (behaviors listed below are normal) A compressor would not start Could it just be the 3-minute delay period (3 minutes after compressor...
  • Page 97: Before Troubleshooting

    9-1-1. Before Troubleshooting Australian demand response model A1 series corresponds to DRED (Demand response enabling device) by AS/NZS 4755.3.1. DRM1 are executed as follows, upon directions from the power company. Be sure to confirm they are not operated before usually troubleshooting. Air conditioner demand response Demand response mode Description...
  • Page 98 Troubleshooting for Demand Unit Demand P.C. board is failed. Exchange of transformer, Fuse exchange of Demand F100 is melted. P.C. board Take off wiring of Exchange of transformer, CN102. Short-circuit is exchange of Demand found between “~” and P.C. board “~”...
  • Page 99: Troubleshooting Method

    9-2. Troubleshooting method The remote controllers (main remote controller and central controller) and the interface P.C. board of an outdoor unit are provided with an LCD display (remote controller) or a 7-segment display (outdoor interface P.C. board) to display operational status. Using this self-diagnosis feature, the trouble site / trouble part may be identified in the event of a trouble by following the method described below.
  • Page 100 (Check code detected by main remote controller) Check code Display of receiving unit Outdoor 7-segment display Indicator light block Main Typical trouble site check code remote Operation Timer Ready Sub-code Flash controller No master remote controller, troubled Signals cannot be received from indoor unit; master –...
  • Page 101 List of Check Codes (Outdoor Unit) IPDU: Intelligent Power Drive Unit (Inverter P.C. board) : Lighting, : Flashing, : Goes off (Check codes detected by outdoor interface - typical examples) ALT: Flashing is alternately when there are two flashing LED SIM: Simultaneous flashing when there are two flashing LED Check code Display of receiving unit...
  • Page 102 Check code Display of receiving unit Outdoor 7-segment display Indicator light block TCC-LINK Typical trouble site Description of check code central control or main remote Operation Timer Ready Sub-code controller Flash display Outdoor EEPROM is troubled (alarm and check – shutdown for outdoor unit and continued code operation...
  • Page 103 (Errors detected by IPDU featuring in outdoor unit - typical examples) Check code Display of receiving unit Outdoor 7-segment display TCC-LINK Indicator light block central control Typical trouble site Description of check code or main remote Operation Timer Ready Sub-code Flash controller display...
  • Page 104: Troubleshooting Based On Information Displayed On Remote Controller

    9-3. Troubleshooting based on information displayed on remote controller Using main remote controller (RBC-AMT32E) (1) Checking and testing When a trouble occurs to an air conditioner, a check code and indoor unit No. are displayed on the display window of the remote controller. Check codes are only displayed while the air conditioner is in operation.
  • Page 105 Using TCC-LINK central remote controller (TCB-SC642TLE2) (1) Checking and testing Display of Unit No. Display of check code When a trouble occurs to an air conditioner, a check code and indoor unit No. are displayed on the display window of the remote controller. Check codes are only displayed while the air Alternate blinking conditioner is in operation.
  • Page 106 Using indoor unit indicators (receiving unit light block) (wireless type) To identify the check code, check the 7-segment display on the outdoor unit. To check for check codes not displayed on the 7-segment display, consult the “List of Check Codes (Indoor Unit)” in “9-2. Troubleshooting method”.
  • Page 107 check code Discharge temperature sensor (TD) trouble Operation Timer Ready Heat exchanger temperature sensor (TE) trouble Liquid temperature sensor (TL) trouble Outdoor unit temperature sensor Outside air temperature sensor (TO) trouble troubles Alternate blinking Suction temperature sensor (TS) trouble Heat sink sensor (TH) trouble Wiring trouble in heat exchanger sensor (TE) and liquid temperature sensor (TL) Outdoor unit temperature sensor wiring / installation trouble Wiring trouble in outdoor high pressure sensor (PD) and low pressure sensor (PS)
  • Page 108: Check Codes Displayed On Remote Controller And Outdoor Unit (7-Segment Display On I/F Board) And Locations To Be Checked

    9-4. Check codes displayed on remote controller and outdoor unit (7-segment display on I/F board) and locations to be checked For other types of outdoor units, refer to their own service manuals. Check code Location Outdoor 7-segment display Check code detection Description System status Check items (locations)
  • Page 109 Check code Location Outdoor 7-segment display Check code detection Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code Remote Duplicated Stop of In two remote controller Check remote controller controller master remote corresponding configuration (including settings.
  • Page 110 Check code Location Outdoor 7-segment display Check code detection Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code Indoor Indoor TCJ Stop of Sensor resistance is infinity Check connection of TCJ unit sensor trouble corresponding or zero (open / short circuit).
  • Page 111 Check code Location Outdoor 7-segment display Check code detection Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code IPDU TH sensor trouble All stop Sensor resistance is zero Trouble in IGBT built-in (short circuit). temperature sensor –...
  • Page 112 Check code Location Outdoor 7-segment display Check code detection Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code IPDU Current All stop Current flow of at least Check current detection detection circuit specified magnitude is circuit wiring.
  • Page 113 Check code Location Outdoor 7-segment display Check code detection Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code Indoor Connection of Stop of There is at least one stand- Check indoor addresses. unit group control corresponding alone indoor unit to which –...
  • Page 114 Check code Location Outdoor 7-segment display Check code detection Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code IPDU Activation of All stop High-pressure SW is Check connection of high-pressure activated. high-pressure SW connector. Check for trouble in PD pressure sensor.
  • Page 115 Check code Location Outdoor 7-segment display Check code detection Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code Inverter DC voltage is too Check for trouble in outdoor Inverter DC All stop high (overvoltage) or too P.C.
  • Page 116 Check code Location Outdoor 7-segment display Check code detection Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code 01: TS All stop Protective shutdown due to Check for insufficiency in condition leakdetection sustained suction refrigerant quantity. (TS condition) temperature at or above Check outdoor service...
  • Page 117 Check code Location Outdoor 7-segment display Check code detection Description System status Check items (locations) Main condition(s) remote detection Check Sub-code controller code (Sub code: *0) *0: IGBT short IPDU Outdoor fan All stop ・Check fan motor. Fan IPDU over current ・Check for trouble in fan circuit IPDU error...
  • Page 118 Errors detected by TCC-LINK central control device Check code Location Check code detection Outdoor 7-segment display Description System status Check items (locations) Main condition(s) remote detection Sub-code controller TCC-LINK TCC-LINK Continued Central control device is Check for trouble in central central control operation unable to transmit signal.
  • Page 119 Points to Note When Servicing Compressor (1) When checking the outputs of inverters, remove the wiring from the compressors. How to Check Inverter Output (1) Turn off the power supply. (2) Remove compressor leads from the IPDU P.C. board (A3-IPDU). (Be sure to remove all the leads.) (3) Turn on the power supply and start cooling or heating operation.
  • Page 120: Diagnosis Procedure For Each Check Code

    9-5. Diagnosis procedure for each check code...
  • Page 143: 7-Segment Display Function

    9-6. 7-segment display function 7-segment display on outdoor unit (interface P.C. board) The interface control P.C. board features a 7-segment LED display designed to check operational status. Display items can be changed by changing the combination of the number settings of rotary switches provided on the P.C. board (SW01, SW02 and SW03).
  • Page 144 (1)Display of system information (displayed on outdoor unit) Refrigerant name Display refrigerant name Refrigerant R410A System capacity A [4]~[6]:4 to 6 HP [HP] Total capacity of indoor units A [i. No. of indoor units connected / A […0.]~[12.]:0 to 12 (No. of units connected) No.
  • Page 145 (2)Display of outdoor unit information (displayed on outdoor unit) Check code B Check code (only latest one displayed) If there is no check code, [– – –] is displayed. If there is sub-code, check code [ ] and sub-code [– ] are displayed alternately, for 3 seconds and 1 second, respectively.
  • Page 146 (3)Display of outdoor cycle data (displayed on outdoor unit) PD pressure data PD pressure (MPaG) is displayed in decimal format. (MPaG: Approx. 10 times magnitude of kg/cm P d. PS pressure data PS pressure (MPaG) is displayed in decimal format. P S.
  • Page 147 (4)Display of indoor unit information (displayed on outdoor unit) Indoor BUS communication signal B Upon receiving signal: [… … 1], Other times: [… … …] receiving status Indoor check code B No check code: [– – –] Indoor HP capacity 0.6 to 6.0 HP : […0.6] to […6.0] Indoor request command B [ #.
  • Page 148: Sensor Characteristics

    9-7. Sensor characteristics Outdoor Unit Temperature sensor characteristics Outdoor TS, TE, TL and TO sensors Temperature [°C] Resistance [k ] 101.7 76.3 57.7 44.0 33.8 Resistance 26.1 [k ] 20.4 (10 °C or below) Resistance [k ] 16.0 (10 °C or above) 12.6 10.0 33.8k...
  • Page 149: Indoor Unit

    Outdoor Unit Pressure sensor characteristics Input / output wiring summary High pressure side (PD) Low pressure side (PS) Pin No. Input / output name Lead wire color Input / output name Lead wire color OUTPUT White — — — — OUTPUT White Black...
  • Page 150 Indoor TC1 sensor Temperature [°C] Resistance [k ] Resistance Resistance [k ] [k ] (10 °C or below) (10 °C or above) Temperature [°C] Indoor TC2 and TCJ sensors Temperature [°C] Resistance [k ] Resistance Resistance [k ] [k ] (10 °C or below) (10 °C or above) Temperature [°C]...
  • Page 151: Pressure Sensor Output Check

    9-8. Pressure sensor output check Outdoor Unit PD sensor characteristics 0 to 4.41 MPa (0.5 to 5 V output for 0 to 4.41 MPa) Voltage readings across pins 1 and 3 of CN501 on outdoor unit interface P.C. board (with negative-side probe of multimeter placed on pin 3) VOLT VOLT...
  • Page 152 Outdoor Unit PS sensor characteristics 0 to 1.47 MPa (0.5 to 5 V output for 0 to 1.47 MPa) Voltage readings across pins 2 and 3 of CN500 on outdoor unit interface P.C. board (with negative-side probe of multimeter placed on pin 3) VOLT VOLT VOLT...
  • Page 153: Outdoor Unit Parts Replacement Methods

    Outdoor unit parts replacement methods Step Component Procedure Remarks Common WARNING Front panel (upper) Do not detach the inverter for 5 minutes after turning off the breaker as doing so may cause electric shocks. Front panel (lower) CAUTION Wear gloves when working on it. (Fig.
  • Page 154 Step Component Procedure Remarks Discharge 1. Detachment cabinet 1) Remove the front panels and upper panel. [Step.1] 2) Remove the screws of the discharge cabinet Discharge cabinet (upper) (upper), top of the heat exchanger plate. (M4×10, 1 ) (Fig. 2-1) Heat exchanger (upper) screw (1 position) Discharge...
  • Page 155 Step Component Procedure Remarks Side cabinet 1. Detachment 1) Remove the front panels and upper panel. [Step.1] Side panel (upper) 2) Remove the screws of the side panel (upper), Side panel (lower) top of the heat exchanger plate. (M4×10, 3 ) (Fig. 3-2) 3) Remove the screws of the side panel (upper) and side panel (lower).
  • Page 156 Step Component Procedure Remarks Reactor WARNING replacement Inverter cover (B) Do not detach the inverter for 5 minutes after turning off the breaker as doing so may cause electric shocks. 1. Detachment 1) Remove the front panels, upper panel and discharge cabinets.
  • Page 157 Step Component Procedure Remarks Inverter WARNING assembly Do not detach the inverter for 5 minutes after turning off the breaker as doing so may cause Lead wire clamp electric shocks. of fan motor (1 position) 1. Detachment (Fig. 5-1) 1) Remove the front panels, upper panel, discharge cabinets, side panels, and reactor Fan motor connectors box.
  • Page 158 Step Component Procedure Remarks Inverter 6) Remove the terminal cover of the compressor, assembly and disconnect the compressor leads from the (continued) compressor. (Fig. 5-6) Thermostat Thermostat WARNING Black Black The quick connect terminals of the White White compressor lead wires may become Put on the Put on the loose when they are disconnected.
  • Page 159 Step Component Procedure Remarks Interface ⑥ Interface P.C. board WARNING P.C. board Do not detach the inverter for 5 minutes after turning off the breaker as doing so may cause electric shocks. 1) Perform Step 1 of ① and 3) of ⑤. the board to remove the interface P.C.board.
  • Page 160 Step Component Procedure Remarks Comp-IPDU ⑧ WARNING P.C. board Do not detach the inverter for 5 minutes after turning off the breaker as doing so may cause Noise filter P.C. board electric shocks. 1) Perform Step 1 of ①, Step 2 and Step 3 of ⑤, Step 2 of ⑦.
  • Page 161 Step Component Procedure Remarks Fan IPDU ⑨ WARNING P.C. board Do not detach the inverter for 5 minutes after turning off the breaker as doing so may cause electric shocks. 1) Perform Step 1 of ①, Step 2 and Step 3 of ⑤, Step 2 of ⑦, Step 2 and Step 3 of ⑧.
  • Page 162 Step Component Procedure Remarks Reactor ⑩ WARNING replacement Do not detach the inverter for 5 minutes after turning off the breaker as doing so may cause electric shocks. 1) Perform Step 1 of ①, Step 1 of ④. 2) Remove the screws on the reactor. (M4×8, 4) 3) Mount a new reactor.
  • Page 163 Step Component Procedure Remarks Fan motor 1) Remove the front panels, upper panel, and Turn the flange nut clockwise to loosen it. replacement discharge cabinets, and fan motor leads. [Step.1, Step.2, and “2)” of Step.5] 2) Remove the fl ange nut fi xing the fan motor and propeller fan.
  • Page 164 Step Component Procedure Remarks 12 Compressor 1. Removing the malfunctioning compressor replacement 1) Collect the refrigerant gas with the recovery Inverter fixing equipment. plate (back) 2) Remove the front panels, upper panel, discharge cabinets, side panels, reactor box, and Inverter assembly. [Step.1, Step.2, Step.3, Step.4, and Step.5] Inverter fixing plate (lower)
  • Page 165 Step Component Procedure Remarks 13 Compressor 1. Installation of compressor installation 1) Install the compressor in the reverse procedure of removal. Sound-insulation mat (outside-1) CAUTION Suction pipe Partition plate The tightening torque of the hexagonal bolt to fi x the compressor is 11.0 N•m (110 Kgf•cm). Discharge pipe Compressor 2.
  • Page 166 Step Component Procedure Remarks 14 PMV coil 1. Detachment 1) Remove the front panels, and upper panel. [Step.1] Lead wire clamp 2) Remove the connector connected between the (1 position) interface P.C. board and PMV coil. Banding band CN300 ...PMV coil (6P: white) (4 positions) 3) Remove the lead wire from the lead wire clamp (1 position) and the banding band (3 places).
  • Page 167 Step Component Procedure Remarks 15 Fan guard 1. Detachment Screws (2 positions) 1) Remove the discharge cabinets. [Step.2] Fan guard CAUTION For scratch protection, work on a carton box, cloth, or the like. 2) Remove the screws from the discharge cabinet and fan guard knob.
  • Page 168 Step Component Procedure Remarks 16 Heat 1. Detachment Heat exchanger 4-way valve connecting pipe exchanger 1) Collect the refrigerant gas with the recovery Remove using the burner. assembly equipment. 2) Remove the screw of the inverter assembly, etc. [“2)” to “8)” of Step.12] Header 3) Slide the sensor holder upward to release the lock, and pull it out toward to the center of the...
  • Page 169 Step Component Procedure Remarks 17 Handle 1. Detachment Cushioning (B) (Front panel) 1) Remove the front panels. [“2)” of Step.1] Front panel 2) Remove the cushioning without tearing it. (Fig.17-1) 3) Use a fl athead screwdriver or something to press on the 3 clamp hooks on the handle. (Fig.17-2) Bump to cushion, stick it.
  • Page 170: C. Board Exchange Procedures

    P.C. board exchange procedures 11-1.Interface P.C. board replacement procedure (MCC-1639: 43H69011) This same service P.C. board is installed in different models at the shipment stage. If the P.C. board assembly is to be replaced, check what appears on the inspection display (7-segment display), enter this on the replacement record table, and then follow the replacement steps below to ensure that the assembly is replaced correctly for the model concerned.
  • Page 171 (5) Cut the jumper wires of the service P.C. board as indicated in the table below. These settings are different from the settings for the jumpers on the P.C. board (malfunctioning board) prior to its replacement. If the model setting is not selected, inspection code “L10” will be displayed, and the outdoor unit operation will remain stopped.
  • Page 172: Comp-Ipdu P.c. Board Replacement Procedure (Mcc-1647)

    11-2.Comp-IPDU P.C. board replacement procedure (MCC-1647: 43H69013) 1. Applicable models MCY-MHP0404HS-E MCY-MHP0504HS-E MCY-MHP0604HS-E MCY-MHP0404HSJ-E MCY-MHP0504HSJ-E MCY-MHP0604HSJ-E MCY-MHP0404HS-TR MCY-MHP0504HS-TR MCY-MHP0604HS-TR MCY-MHP0404HS MCY-MHP0504HS MCY-MHP0604HS MCY-MHP0404HSJ MCY-MHP0504HSJ MCY-MHP0604HSJ MCY-MHP0404HS-ID MCY-MHP0504HS-ID MCY-MHP0604HS-ID MCY-MHP0404HS-A MCY-MHP0504HS-A MCY-MHP0604HS-A 2. Shipped parts list Please make sure that before you do the work, the following parts are shipped all. Parts name Quantity P.C.board Replacement Procedure Manual (English and Chinese each 1page A4 paper double side print.)
  • Page 173 Comp-IPDU P.C.board ④ Screw (M4x8) (43H69013) Used to secure the lead wire Screw tightening torque: 1.2 ±0.1 N m ② Single-touch spacer Card spacer ① ③ Screw (M4x14) Push this in the direction of the arrow to unlock and remove the P.C.
  • Page 174: Fan Ipdu P.c. Board Replacement Procedure (Mcc-1597)

    11-3.Fan IPDU P.C. board replacement procedure (MCC-1597: 43H69008) 1. Applicable models MCY-MHP0404HS-E MCY-MHP0504HS-E MCY-MHP0604HS-E MCY-MHP0404HSJ-E MCY-MHP0504HSJ-E MCY-MHP0604HSJ-E MCY-MHP0404HS-TR MCY-MHP0504HS-TR MCY-MHP0604HS-TR MCY-MHP0404HS MCY-MHP0504HS MCY-MHP0604HS MCY-MHP0404HSJ MCY-MHP0504HSJ MCY-MHP0604HSJ MCY-MHP0404HS-ID MCY-MHP0504HS-ID MCY-MHP0604HS-ID MCY-MHP0404HS-A MCY-MHP0504HS-A MCY-MHP0604HS-A 2. Shipped parts list Please make sure that before you do the work, the following parts are shipped all. Parts name Quantity P.C.board Replacement Procedure Manual (English and Chinese each 4page A3 paper double side print.)
  • Page 175 4. Replacement steps (1) Turn off the power of the outdoor control unit. (Turn off the power of the outdoor unit.) (2) Immediately after turning off the power of the outdoor unit, the electrolytic capacitors inside the unit will still have a high voltage, and there is a risk of electric shocks.
  • Page 176 Upper stage Lower stage fan motor fan motor Exchange ④Current Fuse ③ Card spacer ② Screw (M3x20) Used to secure the rectifier and IPM devices Screw tightening torque:0.55±0.1N/m ③ Card spacer Upper stage fan motor Push this in the direction of the arrow to unlock and remove the P.C.
  • Page 177: Noise Filter P.c. Board Replacement Procedure (Mcc-1551)

    11-4.Noise filter P.C. board replacement procedure (MCC-1551: 43H69012) 1. Applicable models MCY-MHP0404HS-E MCY-MHP0504HS-E MCY-MHP0604HS-E MCY-MHP0404HSJ-E MCY-MHP0504HSJ-E MCY-MHP0604HSJ-E MCY-MHP0404HS-TR MCY-MHP0504HS-TR MCY-MHP0604HS-TR MCY-MHP0404HS MCY-MHP0504HS MCY-MHP0604HS MCY-MHP0404HSJ MCY-MHP0504HSJ MCY-MHP0604HSJ MCY-MHP0404HS-ID MCY-MHP0504HS-ID MCY-MHP0604HS-ID MCY-MHP0404HS-A MCY-MHP0504HS-A MCY-MHP0604HS-A 2. Shipped parts list Please make sure that before you do the work, the following parts are shipped all. Parts name Quantity P.C.board Replacement Procedure Manual (English and Chinese each 1page A4 paper double side print.)
  • Page 178 Noisefilter P.C.board (43H69012) ② Single-touch spacer ③ Screw (M3x20) ⑤ Screws (M4x8) P.C.board Used to secure lead wires screw ③ Screw tightening torque: the P.C. board 1.2 ±0.1 ④ Screws (M4x8) Used to secure lead wires ① Card edge spacer Screw tightening torque: 1.2 ±0.1 Push this in the...
  • Page 179: Exploded Diagram / Parts List

    Exploded diagram / parts list...
  • Page 180 43H00020 PANEL, ASSY, TOP 43H19014 GUARD, FAN 43H19012 PLATE, STAY 43H07004 GUARD, FIN, SIDE 43H11006 INSULATOR, SOUND, INNER 43H11007 INSULATOR, SOUND, OUTER, LARGE 43H11008 INSULATOR, SOUND, OUTER, SMALL 43H07005 HANDLE 43H15004 MARK, TOSHIBA, MiNi-SMMS 43H88019 OWNER'S MANUAL, MCY-MHP604HS-E 43H88020 OWNER'S MANUAL, MCY-MHP604HS-TR...
  • Page 181 43H02004 PANEL, ASSY, SIDE, UP 43H00020 PANEL, ASSY, TOP 43H19014 GUARD, FAN 43H19012 PLATE, STAY 43H07004 GUARD, FIN, SIDE 43H11006 INSULATOR, SOUND, INNER 43H11007 INSULATOR, SOUND, OUTER, LARGE 43H11008 INSULATOR, SOUND, OUTER, SMALL 43H07005 HANDLE 43H15004 MARK, TOSHIBA, MiNi-SMMS 43H88021 OWNER’S MANUAL, MCY-MHP604HS...
  • Page 182 43H00020 PANEL, ASSY, TOP 43H19014 GUARD, FAN 43H19012 PLATE, STAY 43H07004 GUARD, FIN, SIDE 43H11006 INSULATOR, SOUND, INNER 43H11007 INSULATOR, SOUND, OUTER, LARGE 43H11008 INSULATOR, SOUND, OUTER, SMALL 43H07005 HANDLE 43H15004 MARK, TOSHIBA, MiNi-SMMS 43H88019 OWNER’S MANUAL, MCY-MHP604HS-E 43H88020 OWNER’S MANUAL, MCY-MHP604HS-TR...
  • Page 183 43H02004 PANEL, ASSY, SIDE, UP 43H00020 PANEL, ASSY, TOP 43H19014 GUARD, FAN 43H19012 PLATE, STAY 43H07004 GUARD, FIN, SIDE 43H11006 INSULATOR, SOUND, INNER 43H11007 INSULATOR, SOUND, OUTER, LARGE 43H11008 INSULATOR, SOUND, OUTER, SMALL 43H07005 HANDLE 43H15004 MARK, TOSHIBA, MiNi-SMMS 43H88021 OWNER’S MANUAL, MCY-MHP604HS...
  • Page 184: Inverter Assembly

    Inverter assembly...
  • Page 185 Q’ty/Set MCY-MHP 0404HS-E 0404HSJ-E 0404HS-TR 0404HS Ref.No. Part No. Description 0504HS-E 0504HSJ-E 0504HS-TR 0504HS 0604HS-E 0604HSJ-E 0604HS-TR 0604HS 43H69011 PC BOARD ASSY MCC-1639 43H69012 PC BOARD ASSY MCC-1551 43H69013 PC BOARD ASSY MCC-1647 43H69008 PC BOARD ASSY MCC-1597 43H50001 HOLDER SENSOR 43H53001 THERMISTOR PTC 43H60001...
  • Page 186 FILE NO. SVM-13011 WARNINGS ON REFRIGERANT LEAKAGE Check of Concentration Limit Important The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas NOTE 2 : leaking out, its concentration will not exceed a set limit. The standards for minimum room volume are as follows.
  • Page 187 TOSHIBA CARRIER CORPORATION 23-17, TAKANAWAN,3 CHOME,MINATOKU TOKYO, 108-0075, JAPAN Copyright © 1999 to 2012 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved. Revision record First issue Oct. 2011 Revision 1 Change 12.Exploded diagram / Parts list Page 179 to184 2012...

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