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Toshiba MMK-AP0074MH-E Service Manual
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Toshiba MMK-AP0074MH-E Service Manual

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See also: Owner's Manual , Installation Manual
FILE NO. A10-034-1

SERVICE MANUAL

MULT TYPE
<High Wall Types>
MMK-AP0074MH-E
MMK-AP0094MH-E
MMK-AP0124MH-E
MMK-AP0074MH-TR
MMK-AP0094MH-TR
MMK-AP0124MH-TR
• This Service Manual describes contents of the new High Wall indoor unit.
For the outdoor unit, refer to the Manual with FILE NO. A10-005, A05-004-1, A05-015.
• The service parts will be supplied by TCTC.
R410A
PRINTED IN JAPAN, Revised on Jul, 2012
ToMo

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Summary of Contents for Toshiba MMK-AP0074MH-E

  • Page 1: Service Manual

    FILE NO. A10-034-1 SERVICE MANUAL MULT TYPE <High Wall Types> MMK-AP0074MH-E MMK-AP0094MH-E MMK-AP0124MH-E MMK-AP0074MH-TR MMK-AP0094MH-TR MMK-AP0124MH-TR • This Service Manual describes contents of the new High Wall indoor unit. For the outdoor unit, refer to the Manual with FILE NO. A10-005, A05-004-1, A05-015.

  • Page 2: Table Of Contents

    CONTENTS PRECAUTION FOR SAFETY ................6 NEW REFRIGERANT (R410A) ............... 12 1. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ........14 2. WIRING DIAGRAM ................... 15 3. PARTS RATING..................16 4. REFRIGERANTING CYCLE DIAGRAM ........... 17 5. CONTROL OUTLINE ................18 6. CONFIGURATION OF CONTROL CIRCUIT ..........24 7.

  • Page 3: Original Instruction

    Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus Qualified installer thoroughly acquainted with the knowledge related to this work.
  • Page 4 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.

  • Page 5: 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 indication Description WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD...

  • Page 6: Precaution 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. Otherwise, electric shocks may result.
  • Page 7 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 (∗1) 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 8 When any of the electrical parts are to be replaced, ensure that the replacement parts satisfy the specifications given in the Service Manual (or use the parts contained on the parts list in the Service Manual). Use of any parts which do not satisfy the required specifications may give rise to electric shocks, Use specified smoking and/ or a fire.
  • Page 9 When the refrigerant gas leaks during work, execute ventilation. If the refrigerant gas touches to a fire, poisonous gas generates. A case of leakage of the refrigerant and the closed room full with gas is dangerous because a shortage Ventilation of oxygen occurs.
  • Page 10 Only a qualified installer (∗1) or qualified service person (*1) 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 11: Declaration Of Conformity

    ∗ ∗ MMK-AP0124MH-TR ∗ Under 70 dBA DECLARATION OF CONFORMITY Manufacturer: Toshiba Carrier (Thailand) Co., Ltd. 144/9 Moo5, Bangkadi Industrial Park, Tivanon Road, Tambol Bangkadi, Amphur Muang, Pathumthani 12000 Thailand Authorized Representative/ Nick Ball TCF holder: Toshiba EMEA Engineering Director Toshiba Carrier UK Ltd.

  • Page 12: New Refrigerant (R410A)

    • 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 13 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 14: Construction Views (External Views)

    1. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ∗ ∗ ∗ Model: MMK-AP0074MH , AP0094MH , AP0124MH 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 (Installation space) 100mm or more...

  • Page 15: Wiring Diagram

    2. WIRING DIAGRAM...

  • Page 16: Parts Rating

    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 at 25°C Heat exchanger sensor (TC2 sensor) Ø6, 800mm 10kΩ...

  • Page 17: Refrigeranting Cycle Diagram

    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 2) Controls under cool in heating operation...

  • Page 18: Control Outline

    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 • Exchange of cooling-only distinguished, and control is exchanged according to the unit distinctive results.
  • Page 19 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 sensor. discharge • When B zone has continued for 6 minutes, the operation •...
  • Page 20 Item Outline of specifications Remarks Cooling oil While the outdoor unit is recovering cooling oil (refrigerant), the • Recovery operation (refrigerant) indoor units perform the following control tasks: normally takes place recovery control [common for operational (cooling thermo ON/thermo OFF/FAN), roughly every 2 hours.
  • Page 21 Item Outline of specifications Remarks Filter sign display (1) The operation time of the indoor fan is integrated and (None in wireless type) stored in memory, and the filter exchange signal is sent to the remote controller to display on the remote ∗...
  • Page 22 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 23 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 24: Configuration Of Control Circuit

    6. CONFIGURATION OF CONTROL CIRCUIT 6-1. Indoor Controller Block Diagram 6-1-1. Case of Main (Sub) Remote Controller Connected...
  • Page 25 6-1-2. Case of Wireless Remote Controller Kit Connected...
  • Page 26 6-2. 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 27 Wall-Type P.C. Board Optional Switch/Connector Specifications Connector Function Specifications Remarks OFF: No terminator resistor, Setup at shipment OFF: No terminator resistor. Terminator resistor Bit 1 ON: Terminator resistor provided Only 1 unit is ON during central control by custom only. provided/Not provided SW01 OFF: Remote controller A...
  • Page 28 6-3. Functions at test run n Cooling/Heating test run check The test run for cooling/heating can be performed from either indoor remote controller or outdoor interface P .C. board. 1. Start/Finish operation of test run ¤ Test run from indoor remote controller Wired remote controller: Refer to the below item of “Test run”...
  • Page 29 u In case of wireless remote controller REQUIREMENT 1. For the operation procedure, be sure to follow the matter. 2. Finish the forced cooling operation in a short time because it applies excessive strength to the air condi- tioner. 3. A test operation of forced heating is unavailable. Perform a test operation by heating operation using the switches of the remote controller.
  • Page 30 n Check function for operation of indoor unit (Functions at indoor unit side) This function is provided to check the operation of the indoor unit singly without communication with the remote controller or the outdoor unit. This function can be used regardless of operation or stop of the system. However, if using this function for a long time, a trouble of the equipment may be caused.

  • Page 31: Applied Control

    7. APPLIED CONTROL 7-1. 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 FILTER RESET TEST...
  • Page 32 Table: Function selecting item numbers (DN) (Items necessary to perform the applied control at the local site are described.) CODE No. Item Description At shipment [DN] Filter display delay timer 0000 : None 0002 : 2500H 0001 : 150H 0002 : 2500H 0003 : 5000H 0004 : 10000H Dirty state of filter...
  • Page 33 CODE No. Item Description At shipment [DN] Timer setup 0000 : Available (Operable) 0000 : Available (Wired remote controller) 0001 : Unavailable (Operation prohibited) TYPE CODE No. [10] Setup data Type Abbreviated Model name ∗1 008 High Wall MMK-AP XXX H ∗1 : Initial setting value of EEPROM installed on the service P .C.
  • Page 34 7-2. Applied Control in Indoor Unit n Remote location ON/OFF control box (TCB-IFCB-4E2) [Wiring and setup] • Use the exclusive connector for connection with the indoor control P .C. board. • In a group control, the system can operate when connecting with any indoor unit (Control P.C. board) in the group.
  • Page 35 n Ventilating fan control from wired 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 36 n Leaving-ON prevention control (with Wired remote controller) [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 CODE No. is set to the connected indoor unit.
  • Page 37 n Address setup (Manual setting from Wired remote controller) In case that addresses of the indoor units will be determined prior to piping work after wiring work (Example of 2-lines cabling) (Real line: Cabling, Broken line: Refrigerant pipe) • Set an indoor unit per a remote controller. •...
  • Page 38 n Confirmation of indoor unit No. position 1. To know the indoor unit addresses though position of the indoor unit is recognized • In case of individual operation (Wired remote controller : indoor unit = 1 : 1) (Follow to the procedure during operation) <Procedure>...
  • Page 39 n Function selection setup <Procedure> Perform setting while the air conditioner stops. Push buttons simultaneously for 4 seconds or more. TEST The first displayed unit No. is the header indoor unit address in the group control. In this time, fan and louver of the selected indoor unit operate. ò...
  • Page 40 n How to check all the unit No. from an arbitrary wired remote controller <Procedure> Carry out this procedure during stop of system. The indoor unit No. and the position in the identical refrigerant piping can be checked. An outdoor unit is selected, the identical refrigerant piping and the indoor unit No. are displayed one after the other, and then its fan and louver are on.
  • Page 41 n How to change all indoor addresses from an arbitrary wired remote controller (It is possible when setting has finished by automatic addresses.) Contents: The indoor unit addresses in each identical refrigerant piping line can be changed from an arbitrary wired remote controller. ¤...
  • Page 42 n Function to clear error 1. Clearing method from remote controller ¤ How to clear error of outdoor unit In the unit of refrigerant line connected by indoor unit of the remote controller to be operated, the error of the outdoor unit currently detected is cleared. (Error of the indoor unit is not cleared.) The service monitor function of the remote controller is utilized.
  • Page 43 n Monitoring function of wired remote controller switch When using the wired remote controller (Model Name: RBC-AMT32E), the following monitoring function can be utilized. Calling of display <Contents> The temperature of each sensor of the wired remote controller, indoor unit and outdoor unit and the operat- ing status can be checked by calling the service monitor mode from the wired remote controller.

  • Page 44: Troubleshooting

    8. TROUBLESHOOTING 8-1. Troubleshooting Summary 1. Before troubleshooting 1) Applied models  S-MMS Multi type models Indoor unit : MMX-APXXX, Outdoor unit : MMY-MAPXXXXT8X, MMY-MAPXXXHT7X ‚ Super Heat Recovery Multi type models Indoor unit : MMX-APXXX, Outdoor unit : MMY-MAPXXXFT8X ƒ...
  • Page 51 8-3. Troubleshooting by Check Display on Wired Remote Controller n In case of wired remote controller (RBC-AMT32E) 1. Confirmation and check When an error occurred on the air conditioner, the check code and the indoor unit No. are displayed on the display section of the remote controller.
  • Page 52 n In case of central remote controller (TCB-SC642TLE2) ZONE ZONE GROUP CODE 1234 TEST UNIT No. SET DATA R.C. SETTING 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 53 n Indoor unit display part (Receiving unit) (Wireless type) When specifying the check code, check 7-segment display on the center unit. For the check code which is not displayed on the outdoor 7-segment, confirm it in Section “8-2 How to Check / Check code display list (Indoor unit)”. : Goes off, : Goes on, : Flash (0.5 second)
  • Page 54 Lamp indication Check code Cause of trouble occurrence Operation Timer Ready Heat exchanger sensor (TCJ) error ⎫ ⎪ Heat exchanger sensor (TC2) error ⎪ ⎪ Heat exchanger sensor (TC1) error Temp. sensor error in indoor unit ⎬ ⎪ Alternate flash Room temp.
  • Page 55 n Others (Except check code) Lamp indication Check code Cause of trouble occurrence Operation Timer Ready — During test run Simultaneous flash Operation Timer Ready COOL/HEAT disagreement — (Automatic cooling/heating setup to automatic cooling/heating unavailable model, heating setup to cooling only model) Alternate flash...

  • Page 67: Sensor Characteristics

    8-5. Sensor Characteristics Indoor Unit n Temperature sensor characteristics Indoor TA sensor Temperature Resistance [C˚] value [k ] 33.9 26.1 20.3 15.9 12.6 Resistance 10.0 [k ] Temperature [˚C] Indoor TC1 sensor Temperature Resistance [C˚] value [k ] 99.9 74.1 55.6 42.2 32.8...

  • Page 89: How To Replace Main Parts

    10. HOW TO REPLACE MAIN PARTS 10-1. Indoor Unit Part name Procedure Remarks Front panel 1) Stop operation of the air conditioner, and then pull out the power supply plug from the plug socket. Installation place 2) Open the suction grille, and then take off Claw fixing screws of the front panel (4 pcs.).
  • Page 90 Part name Procedure Remarks PMV motor <Caution in works> Use spanners to remove PMV motor. Screw at PMV main unit side (14mm spanner) As the pipes are deformed, do not use monkey spanners. When there is 100 to the Screw at PMV motor side (19mm spanner) ceiling, use a spanner below mm.) 1) Perform work of item...
  • Page 91 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 92 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 93 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 exchanger. 8) Lift up the left side of the heat exchanger toward you, and then remove the cross- flow fan.

  • Page 94: Replacement Of Service Indoor P.c. Board

    11. REPLACEMENT OF SERVICE INDOOR P.C. BOARD Model type P.C. board model MMK-AP ∗∗∗ 4MH series MCC-1510 [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 (AUTO/ MANUAL) mode have been stored at installation.
  • Page 95 H1 Readout of the setup data from EEPROM (Data in EEPROM contents, which have been changed at the local site, are read out together with data in EEPROM set at shipment from the factory.) TEST 1. Push button of the remote controller at the same time for 4 seconds or more. (Corresponded with No.
  • Page 96 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 97 H3 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 button of the remote controller at the same time for 4 seconds or more. (Corresponded with No.
  • Page 98 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 0001: No auto mode Cooling auto mode existence...

  • Page 99: Exploded Views And Parts List

    12. EXPLODED VIEWS AND PARTS LIST (For TCJ, TC2) (For TC1) 228 229...
  • Page 100 MMK-AP Location Part No. Description 0074MH-E 0094MH-E 0124MH-E 0074MH-TR 0094MH-TR 0124MH-TR 43T00421 FRONT PANEL ASSY 43T09370 SUCTION GRILLE 43T03326 BACK BODY ASSY 43T80301 AIR FILTER 43T09371 HORIZONTAL LOUVER 43T70001 DRAIN HOSE ASSY 43T79301 CAP-DRAIN 43T21372 MOTOR, STEPPING 43T44370 REFRIGERATION ASSEMBLY 43T44371 DISTRIBUTOR ASSEMBLY 43T47340...
  • Page 101 405 TC2, TCJ Ø6mm TC1 Ø4mm MMK-AP Location Part No. Description 0074MH-E 0094MH-E 0124MH-E 0074MH-TR 0094MH-TR 0124MH-TR 43T60001 TERMINAL 2P 43T60002 TERMINAL BLOCK 3P 43T60362 TERMINAL 4P 43T50317 SENSOR HEAT EXCHANGER, TC1 43T50304 SENSOR HEAT EXCHANGER 43T50313 SENSOR THERMOSTAT 43T69926 PCB BOARD, MCC-1510 43T69429 DISPLAY UNIT, MCC-861...
  • Page 102 TOSHIBA CARRIER CORPORATION 23-17, TAKANAWA 3 CHOME, MINATOKU, TOKYO, 108-8580, JAPAN Copyright © 1999 to 2010 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved.

This manual is also suitable for:

Mmk-ap0094mh-trMmk-ap0124mh-trMmk-ap0094mh-eMmk-ap0124mh-eMmk-ap0074mh-tr

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