Toshiba MMK-AP0072H Service Manual
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Toshiba MMK-AP0072H Service Manual

Toshiba MMK-AP0072H Service Manual

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See also: Owner's Manual , Owner's Manual Installation and Operation

SERVICE MANUAL

MMK-AP0072H
MMK-AP0092H
MMK-AP0122H
• 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.
• The service parts will be supplied by TCTC.
FILE NO. SVM-05052
<High Wall Type>
PRINTED IN JAPAN, Apr.,2005 ToMo

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Summary of Contents for Toshiba MMK-AP0072H

  • Page 1: Service Manual

    FILE NO. SVM-05052 SERVICE MANUAL <High Wall Type> MMK-AP0072H MMK-AP0092H MMK-AP0122H • 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. • The service parts will be supplied by TCTC.

  • Page 2: Table Of Contents

    FILE NO. SVM-05052 CONTENTS SAFETY CAUTION .................... 3 1. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ........8 2. WIRING DIAGRAM ..................9 3. PARTS RATING ..................10 4. REFRIGERANTING CYCLE DIAGRAM ........... 23 5. CONTROL OUTLINE ................24 6. APPLIED CONTROL ................30 7.

  • Page 3: Safety Caution

    FILE NO. SVM-05052 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 FILE NO. SVM-05052 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 FILE NO. SVM-05052 • 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 FILE NO. SVM-05052 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)
  • Page 7 FILE NO. SVM-05052 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. Leave it as it is for 1 to 2 minutes and check the indicator of the compound gauge does not return.

  • Page 8: Construction Views (External Views)

    FILE NO. SVM-05052 1. CONSTRUCTION VIEWS (EXTERNAL VIEWS) Model: MMK-AP0072H, AP0092H, AP0122H Air inlet part Air outlet gril Knockout Knockout 54.5 54.5 Hock for insulation plate Drain pipe Refrigerant pipe connecting port Refrigerant pipe connecting port Gas side Ø9.5 Liquid side Ø6.4...

  • Page 9: Wiring Diagram

    FILE NO. SVM-05052 2. WIRING DIAGRAM...

  • Page 10: Parts Rating

    FILE NO. SVM-05052 3. PARTS RATING 3-1. Parts Rating Parts Name Type Specications ICF-340-30 Fan motor (for indoor) Output (Rated) 30W, 280-340V DC MF-340-30 Grille motor MP24Z Thermo. Sensor (TA sensor) 318mm 10kΩ at 25°C Heat exchanger sensor (TC1 sensor) Ø4, 600mm 10kΩ...

  • Page 11: Parts Name Of Remote Controller

    FILE NO. SVM-05052 3-3. Parts Name of Remote Controller Operation section • Using a remote controller, maximum 8 indoor units can be operated. • After the operation contents have been once set up, the remote controller can be operated by pushing ON/OFF buttons only.
  • Page 12 FILE NO. SVM-05052 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 pushing button only. UNIT Air volume select button button Selects the desired air volume mode.

  • Page 13: Correct Usage

    FILE NO. SVM-05052 3-4. Correct Usage When you use the air conditioner for the first time or when you change the SET DATA value, follow the proce- dure below. From the next time, the operation displayed on the remote controller will start by pushing the button only.
  • Page 14 FILE NO. SVM-05052 3-5. Automatic Operation (Super Heat Recovery Type Only) When you set the air conditioner in mode or switch over from AUTO operation because of some settings change, it will automatically select either cooling, heating, or fan only operation depending on the indoor tem- perature.

  • Page 15: Timer Operation

    FILE NO. SVM-05052 3-6. TIMER Operation A type of timer operation can be selected from the following three types. 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. ON timer : The operation starts when the time of timer has reached the set time.

  • Page 16: Troubles And Causes

    FILE NO. SVM-05052 3-7. Re-Installation DANGER Ask the dealer or an installation professional to re-install the air conditioner to a new place or move it to another place and to observe the following items. If the air conditioner is inappropriately by installed by yourself, it may cause electric shock or fire.
  • Page 17 FILE NO. SVM-05052 3-9. Information Confirmation before operation Protective device (High pressure switch) • Turn on the power switch 12 hours before starting This device stops automatically an operation when the operation. excessive force is applied on the air conditioner. •...

  • Page 18: Adjustment Of Air Direction

    FILE NO. SVM-05052 3-10. Adjustment of Air Direction To increase the cooling/heating efficiency, be sure to make proper use of the discharge flap for cooling or heating operation. As the characteristics of air, cool air collects at lower levels, and hot air collects at higher levels. CAUTION Set the flap so that air blows out horizontally.

  • Page 19: Air Conditioner Operations And Performance

    FILE NO. SVM-05052 3-11. Air Conditioner Operations and Performance 3 minutes protection function 3-minutes protection function prevents the air conditioner from starting for initial 3 minutes after the main power switch/circuit breaker is turned on for re-starting the air conditioner. Power failure Power failure during operation will stop the unit completely.
  • Page 20 FILE NO. SVM-05052 3-12. Maintenance For maintenance, be sure to turn off the main power switch. WARNING • Please do not intend to do the daily maintenannce and/or Air Filter cleaning by yourself. Otherwise, you may contact with revolving fan or active electrity when you insert your hands into the unit during running of the air conditioners.
  • Page 21 FILE NO. SVM-05052 Return the air filter • Insert the upper portion of air filter confirming to fit it is right and left edges on the indoor unit until it is firmly set. • Close the air inlet grille. If the FILTER lamp on the indoor unit is indicated, press the FILTER button on the remote controller or the TEMPORARY button on the indoor unit to turn off the lamp.

  • Page 22: When The Following Symptoms Are Found

    FILE NO. SVM-05052 3-13. When the Following Symptoms are Found Check the points described below before asking repair servicing. Symptom Cause Outdoor unit • White misty cold air • Fan of the outdoor unit stops automatically and performs defrost or water is out. operation.

  • Page 23: Refrigeranting Cycle Diagram

    FILE NO. SVM-05052 4. REFRIGERANTING CYCLE DIAGRAM Liquid side Gas side Strainer Capillary tube Air heat exchanger at indoor side Pulse Motor Valve (PMV) Strainer Sensor (TCJ) Sensor (TC2) Sensor (TC1) Sensor Fan motor (TA) Functional part name Functional outline Pulse Motor Valve (Connector CN082 (6P): Blue) 1) Controls super heat in cooling operation...

  • Page 24: Control Outline

    FILE NO. SVM-05052 5. CONTROL OUTLINE 5-1. Indoor Unit Control Specifications Item Outline of specifications Remarks Power supply (1) Distinction of outdoor unit • Judgment of outdoor unit is reset. When the power supply is reset, the outdoor units are •...
  • Page 25 FILE NO. SVM-05052 Item Outline of specifications Remarks Prevention of (1) In heating operation, the upper limit of the fan tap is set by cold air one with higher temperature of TC2 sensor and TCJ discharge sensor. • In D and E zones, priority •...
  • Page 26 FILE NO. SVM-05052 Item Outline of specifications Remarks Recovery control (1) The indoor unit which stops operation, thermostat is OFF, • Recovery operation is for cooling or operates in FAN mode opens PMV of the indoor unit by usually executed every 2 refrigerant and oil the specified opening degree when signal of refrigerant hours.
  • Page 27 FILE NO. SVM-05052 Item Outline of specifications Remarks “ ” and “ ” <Operation standby> ..Display on wired type • “ ” goes on. display (1) • “P05” is one of displays of power wire missingand when • Not displayed on the wired (Operation and it’s detected.
  • Page 28 FILE NO. SVM-05052 Item Outline of specifications Remarks Hi POWER When you press the Hi POWER button during cooling, operation heating or A operation, the air conditioner will start the (Wireless remote following operation. control specific • Cooling operation operations) Performs the cooling operation at 1°C lower than the setting temperature.
  • Page 29 FILE NO. SVM-05052 Item Outline of specifications Remarks MEMORY operation Start the air conditioner in the operation mode which you want the remote control to memorize. (1) Press this button briefly to standby memorizing the setting. All the icons currently displayed except for the clock display and mark flashes.

  • Page 30: Applied Control

    FILE NO. SVM-05052 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. UNIT Push , and buttons simultaneously for 4 seconds or more.
  • Page 31 FILE NO. SVM-05052 Table: Function selecting item numbers (DN) (Items necessary to perform the applied control at the local site are described.) Item Description At shipment Filter sign lighting time 0000 : None 0001 : 150H 0001 : 150H 0002 : 2500H 0003 : 5000H 0004 : 10000H Dirty state of filter...
  • Page 32 FILE NO. SVM-05052 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 H 0001 0003 0005 6-1-2. Applied Control in Indoor Unit n Remote location ON/OFF control box (TCB-IFCB-4E) [Wiring and setup] •...
  • Page 33 FILE NO. SVM-05052 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 34 FILE NO. SVM-05052 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 set to the connected indoor unit.
  • Page 35 FILE NO. SVM-05052 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...
  • Page 36 FILE NO. SVM-05052 Wall-Type P.C. Board Optional Switch/Connector Specifications Connector Function Specifications Remarks OFF: No terminator resistor, Setup at shipment OFF: No terminator resistor. Bit 1 Terminator resistor ON: Terminator resistor provided Only 1 unit is ON during central control by custom only. provided/Not provided SW01 OFF: Remote controller A...

  • Page 37: Troubleshooting

    FILE NO. SVM-05052 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 38: Check Code List

    FILE NO. SVM-05052 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 39 FILE NO. SVM-05052 Check code Wireless remote controller Sensor block display Outdoor 7-segment display Judging Main remote of receiving unit Check code name AI-NET central device controller control display Ready Timer Operation Flash display Sub code ¤ ¤ — — Indoor TCJ sensor error Indoor ¤...
  • Page 40 FILE NO. SVM-05052 Check code Wireless remote controller Sensor block display Outdoor 7-segment display Judging Main remote of receiving unit Check code name AI-NET central device controller control display Ready Timer Operation Flash display Auxiliary code ¤ ¤ — — Indoor fan motor error Indoor ¤...
  • Page 41 FILE NO. SVM-05052 7-2-2. New Check Code 1. Difference between the TCC LINK and AI-NET check code The displaying method of the check code changes in this model and after. AI-NET check code TCC Link Used characters Hexadecimal notation, 2 digits Alphabet + Decimal notation, 2 digits Characteristics of code Few classification of communication/...
  • Page 42 FILE NO. SVM-05052 7-3-2. In Case of TCC-LINK Central Control Remote Controller (TCB-SC642TLE) 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.
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  • Page 55 FILE NO. SVM-05052 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 56: Diagnosis Procedure For Each Check Code

    FILE NO. SVM-05052 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 57 FILE NO. SVM-05052 Check code Check code name Cause of operation [E02] / [–] Remote controller sending error Signal could not be sent to indoor unit. (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 58 FILE NO. SVM-05052 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 59 FILE NO. SVM-05052 Check code Check code name Cause of operation [E06] / [04] Decreased number of indoor units 1. Communication lines (U1, U2) connection error between indoor and outdoor (Current code7 / AI-NET) 2. Connector connection error of communica- tion for indoor P .C.
  • Page 60 FILE NO. SVM-05052 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 61 FILE NO. SVM-05052 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-AMT21E), check the setup item codes (DN code) 12, 13, and 14. When there is no address duplication, check to the following flowchart.
  • Page 62 FILE NO. SVM-05052 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 63 FILE NO. SVM-05052 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.
  • Page 64 FILE NO. SVM-05052 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 65 FILE NO. SVM-05052 Check code Check code name Cause of operation [E19] / [96] Header outdoor units quantity error 1. Misconnection of inter-unit cable between indoor and outdoor (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 66 FILE NO. SVM-05052 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 67 FILE NO. SVM-05052 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]...
  • Page 68 FILE NO. SVM-05052 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 69 FILE NO. SVM-05052 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 70 FILE NO. SVM-05052 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 71 FILE NO. SVM-05052 Check code name 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 connec- tor (TL sensor: CN521, White) and characteristics of sensor resistance value.
  • Page 72 FILE NO. SVM-05052 Check code name 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 73 FILE NO. SVM-05052 Check code name Check code name Cause of operation [F16] / [43] Outdoor pressure sensor miscabling 1. High-pressure Pd sensor and low- pressure sensor Ps are exchanged. (Pd, Ps) (Current code / AI-NET) 2. Output voltage of each sensor is zero. Correct connection of connectors.
  • Page 74 FILE NO. SVM-05052 Check code name 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 75 FILE NO. SVM-05052 Check code name Check code name Cause of operation [F29] / [12] Indoor other error Indoor P.C. board error EEROM error (Current code / AI-NET) This error is detected during operation of air conditioner of IC10 non-volatile memory (EEPROM) on indoor unit P .C. board.
  • Page 76 FILE NO. SVM-05052 Check code name 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.
  • Page 77 FILE NO. SVM-05052 Check code name 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.
  • Page 78 FILE NO. SVM-05052 Check code name Check code name Cause of operation [H03] / [17] Current detective circuit system error 1. Cabling or connector connection error on IPDU P.C. board (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 79 FILE NO. SVM-05052 Check code name 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 [H14] / [44] Compressor 2 case thermo operation 4.
  • Page 80 FILE NO. SVM-05052 Check code name Check code name Cause of operation [H06] / [20] Low-pressure protective operation 1. Service valve close (Current code / AI-NET) 2. Ps sensor error 3. SV2, SV4 circuit error 4. Miscabling of communication between indoor and outdoor 5.
  • Page 81 FILE NO. SVM-05052 Check code name 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 82 FILE NO. SVM-05052 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 83 FILE NO. SVM-05052 (*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 84 FILE NO. SVM-05052 Check code name 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 85 FILE NO. SVM-05052 Check code name Check code name Cause of operation [H16] / [d7] Oil level detective circuit system error 1. Detachment of TK2 sensor, miscabling, characteristics error of resistance value (Sub-code: 02) (Current code / AI-NET) 2. Oil-equalization circuit error (Check valve, capillary clogging, strainer clogging) 3.
  • Page 86 FILE NO. SVM-05052 Check code name Check code name Cause of operation [H16] / [d7] TK3 temperature detective circuit error 1. Detachment of TK3 sensor, miscabling, characteristics error of resistance value (Sub-code: 03) (Current code / AI-NET) 2. Error of SV3C valve circuit periphery (Check capillary clogging, strainer clogging) 3.
  • Page 87 FILE NO. SVM-05052 Check code name Check code name Cause of operation [H16] / [d7] TK4 temperature detective circuit error 1. Detachment of TK4 sensor, miscabling, characteristics error of resistance value (Sub-code: 04) (Current code / AI-NET) 2. Check clogging and malfunction of SV3E valve circuit.
  • Page 88 FILE NO. SVM-05052 Check code name 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 (Current code / AI-NET) control. 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 89 FILE NO. SVM-05052 Check code name 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 (Current code / AI-NET) one with priority and on the outdoor unit) Sub-code: No.
  • Page 90 FILE NO. SVM-05052 Check code name 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 91 FILE NO. SVM-05052 Check code name 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 set up so (Current code / AI-NET) as to match with the model.
  • Page 92 FILE NO. SVM-05052 Check code name 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.
  • Page 93 FILE NO. SVM-05052 Check code name 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. to connector CN80? Failure Replace Check outside device.
  • Page 94 FILE NO. SVM-05052 Check code name 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 95 FILE NO. SVM-05052 Check code name Check code name Cause of operation [P04] / [21] Actuation of high-pressure SW 1. High-pressure SW error (Current code / AI-NET) 2. Service valve closed 3. Pd sensor error 4. Indoor/outdoor fan error 5. Indoor/outdoor PMV choke 6.
  • Page 96 FILE NO. SVM-05052 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.
  • Page 97 FILE NO. SVM-05052 Check code name 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. •...
  • Page 98 FILE NO. SVM-05052 Check code name 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.
  • Page 99 FILE NO. SVM-05052 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 100 FILE NO. SVM-05052 Check code name Check code name Cause of operation [P15] / [AE] Gas leak detection 1. Outdoor unit service valve closed (Current code / AI-NET) 2. Outdoor PMV error TS condition (Sub-code: 01) 3. TS1 sensor error 4.
  • Page 101 FILE NO. SVM-05052 Check code name Check code name Cause of operation [P15] / [AE] Gas leak detection 1. Outdoor unit service valve closed (Current code / AI-NET) 2. Outdoor PMV error TD condition (Sub-code: 02) 3. TD sensor error 4.
  • Page 102 FILE NO. SVM-05052 Check code name 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 103 FILE NO. SVM-05052 Check code name 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.
  • Page 104 FILE NO. SVM-05052 Check code name Check code name Cause of operation [P20] / [22] High-pressure protective operation 1. Pd sensor error (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.
  • Page 105 FILE NO. SVM-05052 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 106 FILE NO. SVM-05052 Check code name 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.
  • Page 107 FILE NO. SVM-05052 Check code name 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 108 FILE NO. SVM-05052 Check code name 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 109 FILE NO. SVM-05052 Check code name 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 110 FILE NO. SVM-05052 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 111: Configuration Of Control Circuit

    FILE NO. SVM-05052 8. CONFIGURATION OF CONTROL CIRCUIT 8-1. Indoor Controller Block Diagram 8-1-1. Case of Main (Sub) Remote Controller Connected...
  • Page 112 FILE NO. SVM-05052 8-1-2. Case of Wireless Remote Controller Kit Connected...

  • Page 113: How To Replace Main Parts

    FILE NO. SVM-05052 9. HOW TO REPLACE MAIN PARTS 9-1. Indoor Unit Part name Procedure Remarks Front panel 1) Stop operation of the air conditioner, and then pull out the power supply plug Installation place from the plug socket. 2) Open the suction grille, and then take off Claw fixing screws of the front panel (4 pcs.).
  • Page 114 FILE NO. SVM-05052 Part name Procedure Remarks PMV motor <Caution in works> Screw at PMV main unit side Use spanners to remove PMV motor. (14mm spanner) As the pipes are deformed, do not use Screw at PMV motor side monkey spanners. When there is 100 to the (19mm spanner) ceiling, use a spanner below mm.) 1) Perform work of item...
  • Page 115 FILE NO. SVM-05052 Part name Procedure Remarks Heat 1) Perform work of item exchanger 2) Remove the pipe holder from the rear side of the main unit. 3) Take off fixing screws (2 pcs.) at the left side of the end plate of the heat exchanger. 4) Take off fixing screws (2 pcs.) at the right side of the heat exchanger.
  • Page 116 FILE NO. SVM-05052 Part name Procedure Remarks Fan motor 1) Perform work of item Assemble the fan motor as shown below. 2) Perform work of item 3) Loosen the set screw of the cross-flow fan from the discharge port. 4) Take off fixing screws (2 pcs) to remove the motor band (Right).
  • Page 117 FILE NO. SVM-05052 Part name Procedure Remarks Cross-flow fan 6) Slide the fan motor rightward to remove it. 7) Take off fixing screws (2 pcs.) from fixing support at right side of the heat ex- changer. 8) Lift up the left side of the heat exchanger toward you, and then remove the cross- flow fan.

  • Page 118: Replacement Of Service Indoor P.c. Board

    FILE NO. SVM-05052 10. REPLACEMENT OF SERVICE INDOOR P.C. BOARD Model type P.C. board model Label display on P.C. board MMK-AP 2H 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 replace- ment, 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 119 FILE NO. SVM-05052 2. Every pushing [UNIT] button, the indoor unit address in the group are displayed successively. UNIT Specify the indoor unit No. to be replaced. 3. Using the set temperature buttons, the item code (DN) can be moved up and down one by one.
  • Page 120 FILE NO. SVM-05052 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 121 FILE NO. SVM-05052 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.) 1. Push buttons of the remote controller at the same time for 4 seconds or more. (Corresponded with No.
  • Page 122 Timer set (Wired remote controller) 0000: Available Flap selection of cooling 0000: Standard Indoor unit capacity (Item code [11]) Setup data Model 0000∗ Invalid 0001 MMK-AP0072H 0003 MMK-AP0092H 0005 MMK-AP0122H ∗ Initial value of EEPROM installed on the supplied service P .C. board...

  • Page 123: Exploded Views And Parts List

    FILE NO. SVM-05052 11. EXPLODED VIEWS AND PARTS LIST (For TCJ, TC2) (For TC1) 228 229 NOTE : These service parts are supplied by TCTC. TCTC: TOSHIBA CARRIER Thailand Co. Location Location Part Description Part Description 43T00421 Front Panel Ass’y...
  • Page 124 FILE NO. SVM-05052 TC2, TCJ Ø6mm TC1 Ø4mm Location Location Part Description Part Description 43T69428 P.C. Board 43T60001 Terminal, 15A, 250V 43T69429 43T60002 Terminal Block, 3P , Display Unit 15A, 250V 43T62003 Cord Clamp 43T60362 Terminal 43T61301 Cover-Parts-E 43T50312 Sensor; Heat Exchanger 43T62315 Cover-Connect-P 43T50303...
  • Page 125 TOSHIBA CARRIER CORPORATION...

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