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Toshiba SUPER MMK-AP0073H1 Service Manual
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Toshiba SUPER MMK-AP0073H1 Service Manual

Toshiba SUPER MMK-AP0073H1 Service Manual

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SERVICE MANUAL
• This Service Manual describes contents of the new High Wall indoor unit.
For the outdoor unit, refer to the Manual with FILE NO. A03-009, A05-004, A05-015.
• The service parts will be supplied by TCTC.
MMK-AP0073H1
MMK-AP0093H1
MMK-AP0123H1
MMK-AP0153H1
MMK-AP0183H1
MMK-AP0243H1
FILE NO. SVM-16057-1
<High Wall Type>
Revised no November, 2018

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Summary of Contents for Toshiba SUPER MMK-AP0073H1

  • Page 1 FILE NO. SVM-16057-1 SERVICE MANUAL <High Wall Type> MMK-AP0073H1 MMK-AP0093H1 MMK-AP0123H1 MMK-AP0153H1 MMK-AP0183H1 MMK-AP0243H1 • This Service Manual describes contents of the new High Wall indoor unit. For the outdoor unit, refer to the Manual with FILE NO. A03-009, A05-004, A05-015. •...

  • Page 2: Table Of Contents

    CONTENTS SAFETY CAUTION .................... 3 1. CONSTRUCTION VIEWS (EXTERNAL VIEWS)......... 8 2. WIRING DIAGRAM ..................9 3. PARTS RATING ..................10 4. REFRIGERATING CYCLE DIAGRAM ............40 5. CONTROL OUTLINE ................41 6. APPLIED CONTROL ................48 7. TROUBLESHOOTING ................55 8.

  • Page 3: Safety Caution

    SAFETY CAUTION The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents, and keep them. WARNING Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main unit, otherwise an electric shock is caused when a leak occurs.
  • Page 4 WARNING After repair work, surely assemble the disassembled parts, and connect and lead the removed cables as before. Perform the work so that the cabinet or panel does not catch the inner cables. If incorrect assembly or incorrect cable connection was done, a disaster such as a leak or Assembly/Cabling fire is caused at user’s side.
  • Page 5 • 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 6 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 7 5. Recharge of Refrigerant When recharge of the refrigerant is required, charge the new refrigerant with the specified amount in the procedure as described below. Recover the refrigerant and check there is no refrigerant in the equipment. When the pressure has lowered until indication of the compound gauge pointed -0.1MPa (–76cmHg), open fully the handle Low and turn off the power of vacuum pump.

  • Page 8: Construction Views (External Views)

    1. CONSTRUCTION VIEWS (EXTERNAL VIEWS) 1-1. Indoor Unit Model: MMK-AP0073H1, MMK-AP0093H1, MMK-AP0123H1, MMK-AP0153H1, MMK-AP0183H1, MMK-AP0243H1 1050 Front panel Air filter Air inlet Heat exchanger Knock out system Knock out system 72 78 Installation plate hanger Wireless remote controller Remote controller holder Installation plate hanger Connecting pipe (0.39m) Drain hose...

  • Page 9: Wiring Diagram

    2. WIRING DIAGRAM Model: MMK-AP0073H1, MMK-AP0093H1, MMK-AP0123H1, MMK-AP0153H1, MMK-AP0183H1, MMK-AP0243H1 Pulse motor valve Louver motor motor 5 4 3 2 1 GRN & YEL Heat Outdoor unit 6 5 4 3 2 1 6 5 4 3 6 5 4 3 2 exchanger CN22 1 2 3 4 5...

  • Page 10: Parts Rating

    3. PARTS RATING 3-1. Parts Rating Parts Name Type Specications ICF-340-30-4 Fan motor (for indoor) Output (Rated) 30W, 340V DC Grille motor MP24Z3N Output (Rated) 1W, 16 poles DC 268mm Thermo. Sensor (TA sensor) 10kΩ at 25°C Ø4, 650mm Heat exchanger sensor (TC1 sensor) 10kΩ...
  • Page 11 3-3. Parts Name of Remote Controller n Display section In the display example, all indicators are displayed for the explanation. Display In reality only, the selected contents are indicated. section • When turning on the main power switch and leak breaker at the first TEMP.
  • Page 12 9 20 19 Air volume select display Unit Number display The selected air volume mode is displayed. Unit number of the indoor unit selected with the unit select button or abnormal indication (AUTO) (HIGH) of the indoor/outdoor unit. (MED.) (LOW) Central control display Louver Number display Displayed when the air conditioner is used...
  • Page 13 n Operation section Push each button to select a desired operation. • The details of the operation needs to be set up once, afterward, the air conditioner can be used by ON / OFF pushing button only. TEMP. ON / OFF TIMER SET MODE TIME...
  • Page 14 3-4. Correct Usage • When you use the air conditioner for the first time or when you change the SET DATA value, follow the procedure below. ON / OFF From the next time, the operation displayed on the remote controller will start by pushing the button only.
  • Page 15 [In case of cooling] • Start the cooling operation after approx. 1 minute. [In case of heating (For Heat-pump model only)] • The heating operation mode is selected in accordance with the room temperature and operation starts after approximately 3 to 5 minutes. •...
  • Page 16 u 4-way Air Discharge Cassette Type (1H series), Compact 4-way Type • When the air conditioner is not operating, the louvers automatically direct downward. • While the air conditioner is in ready status for heating, the louvers direct upward. The swinging operation starts after heating ready status has been cleared, but “SWING ”...
  • Page 17 TIMER SET MODE TIME SAVE VENT FILTER RESET TEST SWING/FIX UNIT LOUVER Unit select button n How to set up the wind direction n How to stop swinging SWING/FIX SWING/FIX Push during operation. Push at a desired position while the louver is swinging.
  • Page 18 3-6. Timer Operation • A type of timer operation can be selected from the following three types. (Setting of up to 168 hours is enabled.) OFF timer : The operation stops when the time of timer has reached the set time. Repeat OFF timer : Every time, the operation stops after the set time has passed.
  • Page 19 3-7. Installation Installation place CAUTION • Check that the air conditioner is not installed in a place subject to combustible gas leak. Accumulation of combustible gas around the unit may cause a fire. • Drain the dehumidified water from the indoor unit and outdoor unit to a well-drained place. •...
  • Page 20 3-8. Maintenance WARNING Be sure to turn off the main power switch prior to the maintenance. • Please do not intend to do the daily maintenance and/or Air Filter cleaning by yourself. Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to have a service person do it.
  • Page 21 NOTE • For environmental conservation, it is strongly recommended that the indoor and outdoor units of the air conditioner in use be cleaned and maintained regularly to ensure efficient operation of the air conditioner. When the air conditioner is operated for a long time, periodic maintenance (once a year) is recommended. Furthermore, regularly check the outdoor unit for rust and scratches, and remove them or apply rustproof treatment, if necessary.
  • Page 22 u High Wall Type • Open the air inlet grille. Lift the air inlet grille up to the horizontal position. • Take hold of the left and right handles of the air filter and lift it up slightly, then pull downward to take it out from the filter holder.
  • Page 23 3-9. Air Conditioner Operations and Performance Check before operation WARNING • Check whether earth wire is disconnected or out of place. • Check that air filter is installed to the indoor unit. Turn on the power switch 12 hours or more •...
  • Page 24 3-10. When the Following Symptoms are Found Check the points described below before asking repair servicing. Symptom Cause Outdoor unit • White misty cold air or • Fan of the outdoor unit stops automatically and performs defrost water is out. operation.
  • Page 25 Confirmation and check When a trouble occurred in the air conditioner, the check code and the indoor unit No. appear on the display part of the remote controller. The check code is only displayed during the operation. If the display disappears, operate the air conditioner according to the following “Confirmation of error history”...

  • Page 40: Refrigerating Cycle Diagram

    4. REFRIGERATING CYCLE DIAGRAM Liquid side Gas side Strainer Capillary tube Air heat exchanger at indoor side Pulse Motor Valve (PMV) Strainer Sensor (TCJ) Sensor Sensor (TC2) (TC1) Sensor Fan motor (TA) Functional part name Functional outline Pulse Motor Valve (Connector CN082 (6P): Blue) 1) Controls super heat in cooling operation 2) Controls under cool in heating operation...

  • Page 41: Control Outline

    5. CONTROL OUTLINE 5-1. Control Specifications Item Outline of specifications Remarks When power 1) Distinction of outdoor unit supply is reset When the power supply is reset, the outdoors are distinguished and the control is selected according to the distinguished result. 2) If resetting the power supply during occurrence of a trouble, the check code is once cleared.
  • Page 42 Item Outline of specifications Remarks Air speed selection 1) Operation with (HH), (H), (L) or [AUTO] mode is HH > H+ > H > L+ > L > UL carried out by the command from the remote controller. For the wireless remote controller type, (HH), (H+), (H), (L+), (L) or [AUTO] operation is carried out.
  • Page 43 Item Outline of specifications Remarks Recov ery control for The indoor unit which is under STOP/Thermo-OFF • Recov ery operation is cooling oil status or which operates in [FAN] mode performs the usually performed ev ery (Refrigerant) following controls when it receiv ed the cooling oil 2 hours.
  • Page 44 Item Outline of specifications Remarks Display of <OPERATION READY> Displayed on the remote controller • < > display OPERATION 1) When the following check codes are indicated No display for wireless READY] remote controller • Open phase of power supply wiring [P05] was detected. PRE-HEAT] •...
  • Page 45 Item Outline of specifications Remarks Louver control 1) Louver position setup (Wired type) • The louver position can be set up in the following operation range. In cooling/dry operation In heating/fan operation • In group operation, the louver positions can be set up collectively or individually.
  • Page 46 Item Outline of specifications Remarks COMFORT When you push the COMFORT SLEEP button during cooling, • [ ] display SLEEP operation heating or A operation, the air conditioner will start the following (Wireless remote operation. controller specific The fan speed display will indicate AUTO and low speed will be used. operations) •...
  • Page 47 Item Outline of specifications Remarks QUIET operation When you push the QUIET button during cooling, • [ ] display (Wireless remote heating, fan only or A operation, the air conditioner will controller specific start the following operation. operation) • The fan speed display will indicate AUTO and low speed will be used.

  • Page 48: Applied Control

    6. APPLIED CONTROL 6-1. Indoor Unit 6-1-1. Setup of Selecting Function in Indoor Unit (Be Sure to Execute Setup by a Wired Remote Controller) <Procedure> Execute the setup operation while the unit stops. TEMP. ON / OFF TIMER SET MODE TIME SAVE VENT...
  • Page 49 Table: Function selecting item numbers (DN) (Items necessary to perform the applied control at the local site are described.) Item Description At shipment Filter display delay timer 0000 : None 0001 : 150H 0001 : 150H 0002 : 2500H 0003 : 5000H 0004 : 10000H Dirty state of filter 0000 : Standard...
  • Page 50 TYPE Indoor unit capacity Item code [10] Item code [11] Setup data Type Abbreviated Model name Setup data Model 0008 High Wall MMK-AP XXX H1 0001 0003 0005 0007 0009 0011 6-1-2. Applied Control in Indoor Unit n Remote location ON/OFF control box (TCB-IFCB-4E2) [Wiring and setup] •...
  • Page 51 n Ventilating fan control from remote controller [Function] • The start/stop operation can be operated from the wired remote controller when air to air heat exchanger or ventilating fan is installed in the system. • The fan can be operated even if the indoor unit is not operating. •...
  • Page 52 n Leaving-ON prevention control [Function] • This function controls the indoor units individually. It is connected with cable to the control P .C. board of the indoor unit. • In a group control, it is connected with cable to the indoor unit (Control P .C. board), and the item code 2E is set to the connected indoor unit.
  • Page 53 n Indoor P.C. Board MCC-1510 TCJ sensor Microcomputer operation LED CN102, DC 5V TC sensor EEPROM Inter-unit wire CN101, DC 5V IC10 CN67, AC 200V HA (T10) CN61, DC 12V Option power supply CN309, AC 200V Option output CN60, DC 12V CN71, DC 5V DISP CN72, DC 5V...
  • Page 54 Wall-Type P.C. Board Optional Switch/Connector Specifications Connector Function Specifications Remarks Terminator resistor OFF: No terminator resistor, Setup at shipment OFF: No terminator resistor. Bit 1 provided/Not provided ON: Terminator resistor provided Only 1 unit is ON during central control by custom only. SW01 OFF: Remote controller A Remote controller A/B...

  • Page 55: Troubleshooting

    7. TROUBLESHOOTING 7-1. Troubleshooting Summary 1. Before troubleshooting 1) Applied models All Super Module Multi-system type models (Indoor unit: MMX-APXXX, Outdoor unit: MMY-MAPXXX) 2) Required tools / measuring devices • Screwdrivers (Philips, Minus), spanner, radio pinchers, nipper, push pin for reset switch, etc. •...
  • Page 56 7-2. Check Method On the remote controller (Main remote controller, Central control remote controller) and the interface P .C. board of the outdoor unit, a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P .C. board) to display the operation is provided.
  • Page 57 Check code Wireless remote controller Sensor block display Main Outdoor 7-segment display Judging AI-NET of receiving unit Check code name remote device central control controller Ready Timer Operation display display Sub code Flash ¤ ¤ — — Indoor TCJ sensor error Indoor ¤...
  • Page 58 Check code Wireless remote controller Outdoor 7-segment display AI-NET Sensor block display Main central control of receiving unit Check code name Judging remote display device controller Ready Timer Operation Auxiliary code display Flash ¤ ¤ — — Indoor fan motor error Indoor ¤...
  • Page 59 7-3. Troubleshooting by Check Display on Remote Controller 7-3-1. In Case of Main Remote Controller (RBC-AMT32E) 1. Confirmation and check When a trouble occurred on the air conditioner, the check code and the indoor unit No. are displayed on the display section of the remote controller. The check code is displayed while the air condi- tioner operates.
  • Page 60 7-3-2. In Case of TCC-LINK Central Control Remote Controller (TCB-SC642TLE2) ZONE ZONE GROUP CODE 1234 TEST UNIT No. SET DATA SETTING R.C. GROUP SELECT ZONE 1. Confirmation and check When a trouble occurred on the air conditioner, the check code and the indoor unit No. are displayed on the display section of the remote controller.
  • Page 73 7-4-1. Cautions When Servicing for Compressor 1. Removing wires of both compressors check output of the inverter as described below. 7-4-2. How to Check Inverter Output 1. Turn off the power supply. 2. Remove the compressor lead cables from the compressors. (Be sure to remove lead cables of both compressors.) 3.
  • Page 74 7-5. Diagnosis Procedure for Each Check Code Check code Check code name Cause of operation [E01] / [–] Communication error between 1. Remote controller inter-unit cable error indoor and remote controller (Current code / AI-NET) 2. Indoor power error (Detected at remote controller side) 3.
  • Page 75 Check code Check code name Cause of operation [E02] / [–] Remote controller Signal could not be sent to indoor unit. sending error (Current code / AI-NET) Check the communication wire of the remote controller. ∗ It is not displayed on 7-segment display of the central control controller. Is communication cabling between Correct the communication cabling.
  • Page 76 Check code Check code name Cause of operation [E04] / [04] Indoor/Outdoor 1. Power of outdoor unit was firstly turned on. communication circuit error (Current code / AI-NET) 2. Connection error of communication line (Detected at indoor side) between indoor and outdoor 3.
  • Page 77 Check code Check code name Cause of operation [E06] / [04] Decreased number 1. Communication lines (U1, U2) connection of indoor units error between indoor and outdoor (Current code7 / AI-NET) 2. Connector connection error of communication for indoor P .C. board 3.
  • Page 78 Check code Check code name Cause of operation [E07] / [–] Indoor/Outdoor 1. Indoor/outdoor communication end terminal resistance setup error communication circuit error (Current code / AI-NET) (Detected at outdoor side) 2. Indoor/outdoor communication connection error Is setup of end terminal resistance of outdoor unit normal? Correct setup of end terminal resistance.
  • Page 79 Check code Check code name Cause of operation [E08] / [96] Duplicated indoor addresses 1. Indoor addresses are duplicated. (Current code / AI-NET) 2. Switch setup error of wall type P.C. board Sub-code: Duplicated indoor address Using a main remote controller (RBC-AMT32E), check the setup item codes (DN code) 12, 13, and 14. When there is no address duplication, check to the following flowchart.
  • Page 80 Check code Check code name Cause of operation [E12] / [42] Automatic address 1. When indoor automatic address started, other refrigerant circuit system was setting automatic address. start error (Current code / AI-NET) 2. When outdoor automatic address started, the indoor automatic address was being set.
  • Page 81 Check code Check code name Cause of operation [E16] / [89] Connected indoor units 1. There are 48 or more connected indoor units. capacity over (Current code / AI-NET) 2. Capacity over of total connected indoor units. 3. Incorrect setup of indoor/outdoor capacity Sub-code: 00 : Capacity over 49 to 64 of connected units Perform setup of no detection Is backup operation of outdoor unit being set up?
  • Page 82 Check code Check code name Cause of operation [E18] / [97/99] Communication error between 1. Regular communication between indoor header and follower is unavailable. indoor header and follower (Current code / AI-NET) 2. Switch setup error of wall type P.C. board Are remote controller Correct remote controller inter-unit cables (A/B) normal?
  • Page 83 Check code Check code name Cause of operation [E19] / [96] Header outdoor units 1. Misconnection of inter-unit cable between indoor and outdoor quantity error (Current code / AI-NET) 2. Outdoor I/F P.C. board error Sub-code: 00: No header unit 02: Two or more header units Are not communication lines (U1, U2) Connect communication line between indoor between indoor and outdoor connected...
  • Page 84 Check code Check code name Cause of operation [E23] / [15] Communication sending error 1. Inter-unit cable connection error between outdoor units between outdoor units (Current code / AI-NET) 2. Communication connector connection error between outdoor units, I/F P.C. board error 3.
  • Page 85 Check code Check code name Cause of operation [E25] / [15] Duplicated follower Addresses are duplicated by manual setup of outdoor address outdoor address setup (Current code / AI-NET) Do not set up outdoor address manually. Check code Check code name Cause of operation [E26] / [15] Decrease of...
  • Page 86 Check code Check code name Cause of operation [E28] / [d2] Follower outdoor unit error Follower outdoor error (Current code / AI-NET) Sub-code: Detected outdoor unit No. An error occurred on the follower unit. Check the check code of follower unit on 7-segment display on I/F P .C. board of follower unit, and then check according to Diagnose procedure for each check code.
  • Page 87 Check code Check code name Cause of operation [F01] / [0F] Indoor TCJ sensor error TCJ sensor Open/Short (Current code / AI-NET) Is TCJ sensor connector (CN102: Yellow) Correct connection of connector. on indoor P.C. board normally connected? Are characteristics of TCJ sensor Replace TCJ sensor.
  • Page 88 Check code Check code name Cause of operation [F03] / [93] Indoor TC1 sensor error TC1 sensor Open/Short (Current code / AI-NET) Is TC1 sensor connector (CN100: Brown) Correct connection of connector. on indoor P.C. board normally connected? Are characteristics of TC1 sensor Replace TC1 sensor.
  • Page 89 Check code Check code name Cause of operation [F07] / [18] TL sensor error TL sensor Open/Short (Current code / AI-NET) This error code means detection of Open/Short of TL sensor. Check disconnection of circuit for connection of connector (TL sensor: CN521, White) and characteristics of sensor resistance value.
  • Page 90 Check code Check code name Cause of operation [F13] / [43] TH sensor error IGBT built-in sensor error in A3-IPDU (Current code / AI-NET) Sub-code: 01: Compressor 1 side 02: Compressor 2 side This error code means IGBT built-in temperature sensor error. Check connection of connectors CN06 on IPDU P .C.
  • Page 91 Check code Check code name Cause of operation [F16] / [43] Outdoor pressure sensor 1. High-pressure Pd sensor and low-pressure sensor Ps are exchanged. miscabling (Pd, Ps) (Current code / AI-NET) 2. Output voltage of each sensor is zero. Correct connection of connectors. Are connection of Pd sensor and Pd sensor: CN501, Red Ps sensor connectors correct?
  • Page 92 Check code Check code name Cause of operation [F23] / [43] Ps sensor error Output voltage error of Ps sensor (Current code / AI-NET) Is connection of Ps sensor Correct connection of connector. connector correct? Connector: CN500, White Are output voltage characteristics Sensor error of Ps sensor normal? ∗...
  • Page 93 Check code Check code name Cause of operation [F29] / [12] Indoor other error Indoor P.C. board error (Current code / AI-NET) EEROM error This error is detected during operation of air conditioner of IC10 non-volatile memory (EEPROM) on indoor unit P .C.
  • Page 94 Check code Check code name Cause of operation [H01] / [1F] Compressor breakdown 1. Outdoor unit power line error (Current code / AI-NET) 2. Compressor circuit system error 3. Compressor error 4. Cause of abnormal overload operation 5. IPDU P.C. board error Sub-code: 01: Compressor 1 side 02: Compressor 2 side Is power voltage of outdoor unit normal? ∗...
  • Page 95 Check code Check code name Cause of operation [H02] / [1d] Compressor error (Lock) 1. Outdoor unit power line error (Current code / AI-NET) 2. Compressor circuit system error 3. Compressor error 4. Refrigerant stagnation in compressor shell 5. IPDU P.C. board error Sub-code: 01: Compressor 1 side 02: Compressor 2 side Is power voltage of outdoor unit normal? *1...
  • Page 96 Check code Check code name Cause of operation [H03] / [17] Current detective 1. Cabling or connector connection error on IPDU P.C. board circuit system error (Current code / AI-NET) 2. IPDU P.C. board error Sub-code: 01: Compressor 1 side 02: Compressor 2 side Wiring or connector connection Correct connector connection or cabling.
  • Page 97 Check code Check code name Cause of operation [H04] / [44] Compressor 1 case thermo operation 1. Case thermo circuit error (Current code / AI-NET) 2. I/F P .C. board error 3. Service valve closed 4. Outdoor PMV clogging [H14] / [44] Compressor 2 case thermo operation 5.
  • Page 98 Check code Check code name Cause of operation [H06] / [20] Low-pressure 1. Service valve close protective operation (Current code / AI-NET) 2. Ps sensor error 3. SV2, SV4 circuit error 4. Miscabling of communication between indoor and outdoor 5. Indoor/outdoor fan and condenser error 6.
  • Page 99 Check code Check code name Cause of operation [H07] / [d7] Oil level down 1. Valves of balance pipes closed. detection protection (Current code / AI-NET) 2. Miscabling or misinstallation of TK1 to TK4 sensors 3. TK1 to TK4 sensor error 4.
  • Page 100 In some cases, it may be difficult to check the leakage of clogging in the following condition of refrigerant stagnation in low ambient temperature condition. In this case, take a longer operating time prior to check. (Criterion: Discharge temperature of TD1 and TD2 are 60°C or higher) (*1) a) Leakage check for SV3A valve (For multiple outdoor unit system) •...
  • Page 101 (*3) Check for solenoid valve of outdoor unit (For multiple outdoor unit system) a) Clogging check for SV3A valve • While outdoor unit is operating, set up SW01/02/03 = [2] [1] [3] to 7-segment display [Hr] [ 2], and push SW04 for 2 seconds or more. •...
  • Page 102 Check code Check code name Cause of operation [H08] / [d4] Oil level detective TK1 to TK4 sensor Open/Short temperature sensor error (Current code / AI-NET) Sub-code: 01: TK1 sensor error 02: TK2 sensor error 03: TK3 sensor error 04: TK4 sensor error The detected error is an oil level detective temperature sensor error.
  • Page 103 Check code Check code name Cause of operation [H16] / [d7] Oil level 1. Detachment of TK2 sensor, miscabling, characteristics error of resistance value detective circuit system error (Current code / AI-NET) (Sub-code: 02) 2. Oil-equalization circuit error (Check valve, capillary clogging, strainer clogging) 3.
  • Page 104 Check code Check code name Cause of operation [H16] / [d7] TK3 temperature 1. Detachment of TK3 sensor, miscabling, characteristics error of resistance value detective circuit error (Current code / AI-NET) (Sub-code: 03) 2. Error of SV3C valve circuit periphery (Check capillary clogging, strainer clogging) 3.
  • Page 105 Check code Check code name Cause of operation [H16] / [d7] TK4 temperature 1. Detachment of TK4 sensor, miscabling, characteristics error of resistance value detective circuit error (Current code / AI-NET) (Sub-code: 04) 2. Check clogging and malfunction of SV3E valve circuit. 3.
  • Page 106 Check code Check code name Cause of operation [L03] / [96] Duplicated indoor header units There were two or more indoor header units in some remote controller group control. (Current code / AI-NET) 1) Check the connection changing of the remote controller after the connection has been changed. 2) If the group configuration and address are normal when power has been turned on, the mode automatically shifts to address setup mode.
  • Page 107 Check code Check code name Cause of operation [L06] / [96] Duplicated indoor units with priority Two or more indoor units with priority are duplicated. (Displayed on the indoor unit other than one (Current code / AI-NET) with priority and on the outdoor unit) Sub-code: No.
  • Page 108 Check code Check code name Cause of operation [L08] / [99]∗ Indoor group / address unset Indoor address unset (Current code / AI-NET) Are powers of all the Turn on the power of indoor units. indoor units turned on? Disconnect connectors between [U1, U2] and [U3, U4].
  • Page 109 Check code Check code name Cause of operation [L10] / [88] Outdoor capacity unset On the outdoor IF P.C. board for service, the model selecting jumper has not been (Current code / AI-NET) set up so as to match with the model. I/F P .C.
  • Page 110 Check code Check code name Cause of operation [L29] / [CF] IPDU quantity error 1. Incorrect model setup in service for I/F P.C. board (Current code / AI-NET) 2. Communication error between IPDU, fan IPDU and I/F 3. IPDU, fan IPDU, I/F P .C. board error Sub-code: 01: IPDU1 error 02: IPDU2 error...
  • Page 111 Check code Check code name Cause of operation [L30] / [b6] Interlock in indoor unit Outside error was input. from outside (Current code / AI-NET) Is outside device connected Check indoor P.C. board. Failure → Replace to connector CN80? Check outside device. Does outside device correctly operate? Failure →...
  • Page 112 Check code Check code name Cause of operation [P03] / [1E] Discharge temp TD1 error 1. Service valve of outdoor unit closed (Current code / AI-NET) 2. Outdoor PMV error 3. TD sensor error 4. Refrigerant shortage, clogging of refrigerant circuit system 5.
  • Page 113 Check code Check code name Cause of operation [P04] / [21] Actuation 1. High-pressure SW error of high-pressure SW (Current code / AI-NET) 2. Service valve closed 3. Pd sensor error 4. Indoor/outdoor fan error 5. Indoor/outdoor PMV choke 6. Indoor/outdoor heat exchanger clogging, air short circuit 7.
  • Page 114 Repair SV4 circuit. Is SV4 circuit normal? Coil error, clogging, disconnection of wiring, etc. Refrigerant overcharge, Heating operation clogging,pipe breakage, abnormal overload condition Does heating indoor fan normally operate? Is connector Is indoor connection, PMV normal? coil normal? Repair faulty parts. Is there a cause to Are connector connection, interfere operation of...
  • Page 115 Check code Check code name Cause of operation [P05] / [AF] Open phase, negative phase 1. Power supply open phase (Current code / AI-NET) 2. Power supply negative phase • Check the phase power line of outdoor unit. • Check error of outdoor I/F P .C. board. •...
  • Page 116 Check code Check code name Cause of operation [P12] / [11] Indoor fan motor error 1. Fan motor connector error (Current code / AI-NET) 2. Fan motor error 3. Indoor P.C. board error 4. Cross-flow fan bearing error Turn off breaker once. Turn on breaker after approx.
  • Page 117 P.C. board Indoor fan starts rotating by connecting plug socket. CN210 [P.C. board fan motor output voltage (DC) check] 6 Blue 5 Yellow Measure voltage between pin (GND (Minus): Black) Yellow 4 White pin (V line (Plus): Yellow) of connector CN210. Black 3 Black 2 —...
  • Page 118 Check code Check code name Cause of operation [P15] / [AE] Gas leak detection 1. Outdoor unit service valve closed TS condition (Sub-code: 01) (Current code / AI-NET) 2. Outdoor PMV error 3. TS1 sensor error 4. Refrigerant shortage, clogging refrigerant circuit 5.
  • Page 119 Check code Check code name Cause of operation [P15] / [AE] Gas leak detection 1. Outdoor unit service valve closed TD condition (Sub-code: 02) (Current code / AI-NET) 2. Outdoor PMV error 3. TD sensor error 4. SV4 circuit error 5.
  • Page 120 Check code Check code name Cause of operation [P17] / [bb] Discharge temp TD2 error 1. Outdoor unit service valve closed (Current code / AI-NET) 2. Outdoor PMV error 3. TD sensor error 4. Refrigerant shortage, clogging of refrigerant circuit 5.
  • Page 121 Check code Check code name Cause of operation [P19] / [08] 4-way valve operation error 1. 4-way valve error (Current code / AI-NET) 2. TS1 sensor/TE1 sensor error 3. Pd sensor/Ps sensor error 4. TE sensor/TL sensor misconnection Sub-code: Detected outdoor unit No. Is 4-way valve coil Correct connector connection.
  • Page 122 Check code Check code name Cause of operation [P20] / [22] High-pressure 1. Pd sensor error protective operation (Current code / AI-NET) 2. Service valve closed. 3. Indoor/outdoor fan error 4. Indoor/outdoor PMV clogging 5. Indoor/outdoor heat exchanger clogging 6. SV2 circuit error 7.
  • Page 123 Heating operation Is connector connection of indoor Does heating indoor fan heat exchanger fan or normally operate? fan motor normal? Is indoor PMV normal? Repair faulty parts. Are characteristics Is connector connection of sensor TC2 and TCJ coil normal? resistance normal? Repair faulty parts.
  • Page 124 Check code Check code name Cause of operation [P22] / [1A] Outdoor fan IPDU error 1. Fan lock (Current code / AI-NET) 2. Fan IPDU P.C. board error 3. Overload cause 4. External cause such as blast 5. Fan IPDU power P.C. board error Sub-code: 0 ∗...
  • Page 125 Check code Check code name Cause of operation [P26] / [14] G-Tr short-circuit protection error 1. Outdoor unit power error (Current code / AI-NET) 2. IPDU error/Cable connection error 3. Compressor error 4. IPDU P.C. board error Sub-code: 01: Compressor 1 side 02: Compressor 2 side Is power voltage of outdoor unit normal? Correct power line.
  • Page 126 Check code Check code name Cause of operation [P29] / [16] Compressor position 1. Cable/connector connection error detective circuit error (Current code / AI-NET) 2. Compressor error 3. IPDU P.C. board error Sub-code: 01: Compressor 1 side 02: Compressor 2 side Are connector connection Check and correct circuit and cables and wiring normal?
  • Page 127 Check code Check code name Cause of operation [–] / [97] AI-NET communication line error AI-NET communication line error (Current code / AI-NET) Are AI-NET X and Y Correct communication line. communication lines normal? Are connections of CN01, CN02, and CN03 connectors on network adaptor P.C.
  • Page 128 7-5-1. Indoor Unit n Temperature sensor characteristics Characteristic-1 Indoor TA sensor Temperature [˚C] Characteristic-2 Indoor TC1, TC2, TCJ sensors 90 100 Temperature [˚C]...

  • Page 129: Configuration Of Control Circuit

    8. CONFIGURATION OF CONTROL CIRCUIT 8-1. Indoor Controller Block Diagram 8-1-1. Case of Main (Sub) Remote Controller Connected Main (Sub) master remote controller Weekly timer (Up to 2 sets) Display part Display part Function setup driver Key switch Function setup Display part DC5V Key switch...
  • Page 130 8-1-2. Case of Wireless Remote Controller Kit Connected Indoor unit Main P.C. board (MCC-1510) DC20V Remote controller communication circuit Central control Central control EEPROM remote controller communication circuit (Option) *1 Sensor display TA sensor P.C. board DC5V (MCC-5044) TC sensor Same Same Sensor...

  • Page 131: How To Replace Main Parts

    9. HOW TO REPLACE MAIN PARTS WARNING • Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with the repairs. Electric shocks may occur if the main power supply switch or breakers are not turned off. •...
  • Page 132 9-1. Indoor Unit Part name Procedures Remarks Front panel 1) Stop operation of the air conditioner and turn off its main power supply. 2) Open the air inlet grille, push the arm toward the outside, and remove the grille. 3) Push “PUSH” part under the front panel and remove hooks of the front panel from the Installation plate installation plate.
  • Page 133 Part name Procedures Remarks Electric parts 1) Perform work of item assembly PMV cover PMV cover PMV cover 2) Take off PMV cover fixing screws (2 pcs.) and then remove PMV cover. 3) Take off drain guide fixing screws (2 pcs.) and then remove the drain guide.
  • Page 134 Part name Procedures Remarks <Cautions at work> <AP0243 to AP0153> PMV motor Using spanners by 17mm and 19mm, remove the Spanner push-in part PMV motor. <AP0243 to AP0153> (Main unit side: 17 mm) Using spanners by 16mm and 19mm, remove the PMV motor.
  • Page 135 Part name Procedures Remarks Evaporator 1) Follow to the procedure in the item ‚ . (Heat exchanger) 2) Remove the pipe holder from the rear side of the main unit. 3) Remove 2 fixing screws at the left side 2 screws of the end plate of the heat exchanger.
  • Page 136 Part name Procedures Remarks Bearing 1) Follow to the procedure in the item 2) Remove the 2 screws used to secure the bearing base. 3) Remove the bearing base. 2 screws Bearing base <Caution at assembling> • If the bearing is out from the housing, push it into the specified position and Bearing then incorporate it in the main body.
  • Page 137 Part name Procedures Remarks Fan motor 1) Follow to the procedure till item 2) Loosen the set screw of the cross flow fan. 3) Remove 2 fixing screws of the motor cover and them remove the motor cover. 4) Remove 2 more fixing screws of the motor band and remove the motor band.
  • Page 138 Part name Procedures Remarks <Caution at reassembling> Cross flow 1) To incorporate the fan motor, remove the fan motor rubber (at shaft core side), incorporate the motor into the position in the following figure, and then install the fan motor. 5.0mm •...

  • Page 139: Replacement Of Service Indoor P.c. Board

    10. REPLACEMENT OF SERVICE INDOOR P.C. BOARD Model type P.C. board model Label display on P.C. board MMK-AP 3H1 series MCC-1510 04DD M01 [Requirement when replacing the service indoor P.C. board assembly] In the non-volatile memory (Hereinafter said EEPROM, IC10) installed on the indoor P .C. board before replacement, the type and capacity code exclusive to the corresponding model have been stored at shipment from the factory and the important setup data such as refrigerant line /indoor unit /group address in (AUTO/MANUAL) mode have been stored at installation.
  • Page 140 UNIT LOUVER 2. Every pushing [Unit, Louver ] button, the indoor unit address in the group are displayed successively. Specify the indoor unit No. to be replaced. 3. Using the set temperature buttons, the CODE No. (DN) can be moved up and down one by one. 4.
  • Page 141 CASE 2 C) In case that power of the indoor units cannot be turned in individually. ( a) Remove all CN41 connectors of the indoor units in the same group except those of the exchanged indoor unit. b) Turn on power of the indoor units and proceed to ∗...
  • Page 142 H3 3 Writing of the setup contents to EEPROM (The contents of EEPROM installed on the service P .C. board have been set up at shipment from the factory.) TEST 1. Push buttons of the remote controller at the same time for 4 seconds or more. (Corresponded with No.
  • Page 143 CODE No. table (Please record the objective unit data at field) Item Memo At shipment Filter sign lighting time 0001: 150 hour Dirty state of filter 0000: Standard Central control address 0099: Unfixed Heating suction temp shift 0002: +2°C PRE-DEF indication selection 0000: Standard Cooling auto mode existence 0001: No auto mode...

  • Page 144: Exploded Views And Parts List

    11. EXPLODED VIEWS AND PARTS LIST 11-1. Indoor Unit Model: MMK-AP0073H1, MMK-AP0093H1, MMK-AP0123H1 Detail Drawi-ng A Location Location Part No. Description Part No. Description 43T22312 Bearing Ass’y 43T49044 Cover PMV Plate, Installation Assembly 43T70313 Hose, Drain 43T82342 Motor, Fan, MF340-30-2 43T20016 Fan Ass’y, Cross Flow 43T21407...
  • Page 145 Indoor Unit (Part-E) Model: MMK-AP0073H1, MMK-AP0093H1, MMK-AP0123H1 Location Location Part No. Description Part No. Description 43T50012 Sensor, Heat Exchanger 43T69320 Sensor (TA) 43T50304 Sensor Ass’y 43T6V686 P.C.Board Ass’y, MCC-1510 43T60078 Terminal Block, 2P , 20A 43T69082 P.C.Board Ass’y, MCC-5044 43T60079 Terminal Block, 4P , 1A 43T21397 Louver, Motor, MP24Z3T...
  • Page 146 11-2. Indoor Unit Model: MMK-AP0153H1, MMK-AP0183H1, MMK-AP0243H1 204, 226, 227 216, 231 228, 229 Detail Drawing A Location Location Part No. Description Part No. Description 43T49044 Cover PMV 43T22312 Bearing Ass’y Plate, Installation Assembly 43T82342 43T70313 Hose, Drain 43T03017 Body Ass’y, Back 43T20016 Fan Ass’y, Cross Flow Motor, Fan, MF340-30-2...
  • Page 147 Indoor Unit (Part-E) Model: MMK-AP0153H1, MMK-AP0183H1, MMK-AP0243H1 Location Location Part No. Description Part No. Description 43T50012 Sensor, Heat Exchanger 43T69320 Sensor (TA) 43T50304 Sensor Ass’y 43T6V686 P.C.Board Ass’y, MCC-1510 43T69082 P.C.Board Ass’y, MCC-5044 43T60078 Terminal Block, 2P , 20A 43T60079 Terminal Block, 4P , 1A 43T21397 Louver, Motor, MP24Z3T...
  • Page 148 TOSHIBA CARRIER (THAILAND) CO., LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

This manual is also suitable for:

Super mmk-ap0093h1Super mmk-ap0123h1Super mmk-ap0153h1Super mmk-ap0183h1Super mmk-ap0243h1

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