Toshiba MMU-AP0057MH-E Service Manual
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Toshiba MMU-AP0057MH-E Service Manual

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SERVICE MANUAL
AIR-CONDITIONER (MULTI TYPE)
INDOOR UNIT
<Compact 4-way Cassette type>
MMU-AP0057MH-E (TR)
MMU-AP0077MH-E (TR)
MMU-AP0097MH-E (TR)
MMU-AP0127MH-E (TR)
MMU-AP0157MH-E (TR)
MMU-AP0187MH-E (TR)
R410A
FILE NO. A10-1615
Revision 1 : Jul., 2017
PRINTED IN JAPAN, Jan., 2017
ToMo

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  • Page 1 FILE NO. A10-1615 Revision 1 : Jul., 2017 SERVICE MANUAL AIR-CONDITIONER (MULTI TYPE) INDOOR UNIT <Compact 4-way Cassette type> MMU-AP0057MH-E (TR) MMU-AP0077MH-E (TR) MMU-AP0097MH-E (TR) MMU-AP0127MH-E (TR) MMU-AP0157MH-E (TR) MMU-AP0187MH-E (TR) R410A PRINTED IN JAPAN, Jan., 2017 ToMo...

  • Page 2: Table Of Contents

    CONTENTS PRECAUTIONS FOR SAFETY ..................6 1. SPECIFICATIONS ....................13 2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ............ 15 3. WIRING DIAGRAMS ....................16 4. PARTS RATING ...................... 17 5. REFRIGERANT CYCLE DIAGRAM ............... 18 6. CONTROL OUTLINE ....................19 7. APPLIED CONTROL AND FUNCTIONS (INCLUDING CIRCUIT CONFIGURATION) ............
  • Page 3 • The qualified service person is a person who installs, repairs, maintains, relocates and removes the air conditioners made by Toshiba Carrier Corporation. He or she has been trained to install, repair, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation...
  • Page 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 [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: Precautions For Safety

    PRECAUTIONS FOR SAFETY The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. DANGER Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker for both the indoor and outdoor units to the OFF position. Otherwise, electric shocks may result.
  • Page 7 WARNIG 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 Do not modify the products.Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury. Prohibition of modification. 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).
  • Page 9 After repair work, surely assemble the disassembled parts, and connect and lead the removed wires as before. Perform the work so that the cabinet or panel does not catch the inner wires. If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is caused Assembly / at user’s side.
  • Page 10 When the service panel of the outdoor unit is to be opened in order for the compressor or the area around this part to be repaired immediately after the air conditioner has been shut down, set the circuit breaker to the OFF position, and then wait at least 10 minutes before opening the service panel. If you fail to heed this warning, you will run the risk of burning yourself because the compressor pipes and other parts will be very hot to the touch.
  • Page 11 Declaration of Conformity Manufacturer: TOSHIBA CARRIER CORPORATION 336 Tadehara, Fuji-shi, Shizuoka-ken 416-8521 JAPAN TCF holder: TOSHIBA CARRIER EUROPE S.A.S Route de Thil 01120 Montluel FRANCE Hereby declares that the machinery described below: Generic Denomination: Air Conditioner Model / type: Indoor unit <Compact 4-way Cassette type>...
  • Page 12 Specifications Sound presser level (dBA) Model Weight (kg) Cooling Heating ∗ ∗ MMU-AP0057MH-E 15 (2.5) ∗ ∗ MMU-AP0077MH-E 15 (2.5) ∗ ∗ MMU-AP0097MH-E 15 (2.5) ∗ ∗ MMU-AP0127MH-E 15 (2.5) ∗ ∗ MMU-AP0157MH-E 15 (2.5) ∗ ∗ MMU-AP0187MH-E 15 (2.5) ∗...

  • Page 13: Specifications

    1. SPECIFICATIONS Compact 4-Way Cassette Type 50/60Hz Model name MMU-AP0057MH-E/-TR MMU-AP0077MH-E/-TR MMU-AP0097MH-E/-TR Cooling Capacity Heating Capacity Electrical Power supply 1phase 50Hz 230V(220V-240V) /1phase 60Hz 220V charastaristics Separate power supply for indoor units is required.) Running current 0.16 0.15 0.23 0.21 0.24...
  • Page 14 Compact 4-Way Cassette Type 50/60Hz Model name MMU-AP0127MH-E/-TR MMU-AP0157MH-E/-TR MMU-AP0187MH-E/-TR Cooling Capacity Heating Capacity Electrical Power supply 1phase 50Hz 230V(220V-240V) /1phase 60Hz 220V charastaristics Separate power supply for indoor units is required.) Running current 0.25 0.23 0.28 0.26 0.46 0.46 Power consumption 0.027 0.027...

  • Page 15: Construction Views (External Views)

    2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) – 15 –...

  • Page 16: Wiring Diagrams

    3. WIRING DIAGRAMS – 16 –...

  • Page 17: Parts Rating

    4. PARTS RATING Indoor unit Model MMU-AP 0057MH∗ 0077MH∗ 0097MH∗ 0127MH∗ 0157MH∗ 0187MH∗ Fan motor ICF-340D60-1 Pulse motor EFM-MD12TF Pulse motor valve EFM-25YGTF-2 EFM-40YGTF-3 louver motor MSBPC20F04 Float switch FS-0218-102 Drain pump motor MDP-1401 TA sensor Lead wire length: 818 mm Vinyl tube TC1 sensor Ø4 size lead wire length: 400 mm Vinyl tube TC2 sensor...

  • Page 18: Refrigerant Cycle Diagram

    5. REFRIGERANT CYCLE DIAGRAM Indoor unit Liquid side Gas side Strainer Capillary tube Heat exchanger at indoor side Pulse Motor Valve (PMV) Strainer Sensor (TCJ) Sensor (TC2) Sensor (TC1) Sensor Fan motor (TA) Explanation of functional parts in indoor unit Functional part name Functional outline Pulse Motor Valve...

  • Page 19: Control Outline

    6. CONTROL OUTLINE 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) Setting of indoor fan speed and existence of air direction adjustment Based on EEPROM data, select setting of the indoor fan...
  • Page 20 Item Outline of specifications Remarks Room temp. 2) Using the Item code 06, the setup temperature in heating Shift of suction control operation can be corrected. temperature in heating (Continued) operation Setup data Setup temp. correction +0˚C +2˚C +4˚C +6˚C Except while sensor of the remote controller is Setting at shipment...
  • Page 21 Item Outline of specifications Remarks Air speed 1) Operation with (HH), (H), (L) or [AUTO] mode is carried HH > H+ > H > L+ > L > UL selection out by the command from the remote controller. 2) When the air speed mode [AUTO] is selected, the air speed varies by the difference between Ta and Ts.
  • Page 22 Item Outline of specifications Remarks Air speed selection Selection of high ceiling * Only AP015 can set up Type 1 and Type 3. type CODE No. : (Continued): [5d] or selection of high ceiling on P .C. board SW501 Standard Type 1* Type 3* CODE No.
  • Page 23 Item Outline of specifications Remarks Freeze prevention 1. In all cooling operation, the air conditioner operates TC1: Temperature of indoor control (Low temp. as de-scribed below based upon temp. detected by heat exchanger sensor release) TC1, TC2 and TCJ sensors. •...
  • Page 24 Item Outline of specifications Remarks Recovery control The indoor unit which is under STOP/Thermo-OFF • The indoor unit which is for heating status or which operates in [FAN] mode performs the under thermo-OFF (COOL) refrigerant (Oil) following controls when it received the heating status or which operates in refrigerant (Oil) recovery signal from the outdoor unit.
  • Page 25 Item Outline of specifications Remarks Display of < READY> Displayed on the remote controller • < READY> display [READY] 1) When the following check codes are indicated No display for wireless [HEAT READY] type remote controller • Open phase of power supply wiring [P05] was detected. •...
  • Page 26 Item Outline of specifications Remarks Louver control 1) Louver position setup • When the louver position is changed, the position moves necessarily to downward discharge position once to return to the set position. • The louver position can be set up in the following operation range.
  • Page 27 Item Outline of specifications Remarks Louver control <<Selection of Swing mode>> (Continued) • For the Swing mode, the following three types of modes are selectable and settable by keeping Swing/Direction SWING/FIX button pushed for 4 seconds or more on the remote controller.
  • Page 28 Item Outline of specifications Remarks Louver control • If there is the locked louver in the unit, [ ] goes on the For the setting operation, refer to [How to set louver remote controller screen. (Continued) lock] of Installation Manual. •...
  • Page 29 Item Outline of specifications Remarks Occupancy 1) During the Occupancy sensor operation (DN code: [B5] The Occupancy sensor can sensor [0001] and [B6] [0002 to 0005]), when there is no be set up by wired remote people in the Occupancy sensor range, it is controller RBC-AMS54E* automatically switched to the operation for the absence.

  • Page 30: Applied Control And Functions (Including Circuit Configuration)

    7. APPLIED CONTROL AND FUNCTIONS (INCLUDING CIRCUIT CONFIGURATION) 7-1. Indoor controller block diagram 7-1-1. In Case of Connection of Wired (Simple) Remote Controller Wired(Simple) header remote controller (Up to 2 units) Schedule timer Display LCD Function setup Display driver Key switch Display LED Function setup DC5V...

  • Page 31: In Case Of Connection Of Wireless Remote Controller

    7-1-2. In Case of Connection of Wireless Remote Controller Indoor unit #1 (Header) (Follower) (Follower) Indoor control P.C. board (MCC-1643) DC20V Remote controller communication circuit EEPROM DC5V TA sensor DC12V Same Same TC1 sensor as left as left TC2 sensor Driver TCJ sensor Outside output...

  • Page 32: Connection Of Both Wired (Simple) Remote Controller And Wireless Remote Controller

    7-1-3. Connection of Both Wired (Simple) Remote Controller and Wireless Remote Controller Wired(Simple) header remote controller Schedule timer Function setup Display Display LCD driver Key switch EEPROM Function setup DC5V DC5V Power Display LED Key switch circuit Power Remote controller Secondary circuit communication circuit...

  • Page 33: Indoor Print Circuit Board

    7-2. Indoor Print Circuit Board (MCC-1643) – 33 –...

  • Page 34: Optional Connector Specifications Of Indoor P.c. Board

    7-3. Optional connector specifications of indoor P.C. board – 34 –...

  • Page 35: Test Operation Of Indoor Unit

    7-4. Test operation of indoor unit 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 36 In case of wireless remote controller Turn on the power of the air conditioner. When power is turned on for the first time after installation, it takes approx. 5 minutes until the remote controller becomes available. In the case of subsequent power-on, it takes approx. 1 minute until the remote controller becomes available.
  • Page 37 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 38: Method To Set Indoor Unit Function Dn Code

    7-5. Method to set indoor unit function DN code (When performing this task, be sure to use a wired remote controller.) <Procedure> To be performed only when system at rest Push the buttons simultaneously and hold for at least 4 seconds. The unit No.
  • Page 39 Function CODE No. (DN Code) table (includes all functions needed to perform applied control on site) Item Description At shipment Filter display delay timer 0000: None 0001: 150H 0002 : 2500H 0002: 2500H 0003: 5000H 0004: 10000H Dirty state of filter 0000: Standard 0000: Standard 0001: High degree of dirt (Half of standard time)
  • Page 40 Item Description At shipment B7 Occupancy sensor 0000: Stand by 0001: operation stop 0000: Stand by operation at absent time Whether the power 0000: Invalid 0001: Valid 0001: Valid saving mode can be set by the remote controller Wireless remote 0000: A 0001: B 0000: A...
  • Page 41 Type DN code “10” Value Type Model ∗∗∗ ∗ 0014 Compact 4-way Cassette MMU-AP Indoor Unit Capacity DN code “11” Value Capacity 0000* Invalid 0041 005 type 0001 007 type 0003 009 type 0005 012 type 0007 015 type 0009 018 type *1 Default value stored in EEPROM mounted on service P.C.

  • Page 42: Applied Control Of Indoor Unit

    7-6. Applied control of indoor unit Control system using remote controller interface (TCB-IFCB-4E2) Wiring and setting • In the case of group control, the control system functions as long as it is connected to one of the indoor units (control P.C. board) in the group. If it is desired to access the operation and trouble statuses of other units, relevant signals must be brought to it from those units individually.
  • Page 43 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 44 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. 2E 2E 2E 2E 2E • 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 45 Manual address setting using the remote controller Procedure when setting indoor units’ addresses first under the condition that indoor wiring has been completed and outdoor wiring has not been started (manual setting using the remote controller) Wiring example of 2 refrigerant lines Refrigerant line 1 Refrigerant line 2 Outdoor...
  • Page 46 <Line (system) address> 12 12 12 12 12 Push the TEMP. buttons repeatedly to set the CODE No. to Push the TIME buttons repeatedly to set a system address. (Match the address with the address on the interface P.C. board of the header outdoor unit in the same refrigerant line.) Push button.
  • Page 47 Confirming the indoor unit addresses and the position of an indoor unit using the remote controller Confirming the numbers and positions of indoor units To see the indoor unit address of an indoor unit which you know the position of When the unit is individual (the indoor unit is paired with a wired remote controller one-to-one), or it is a group-controlled one.
  • Page 48 To find an indoor unit’s position from its address When checking unit numbers controlled as a group TEMP. ON / OFF TIMER SET MODE TIME SAVE VENT Stop FILTER RESET TEST SWING/FIX UNIT LOUVER (Execute it while the units are stopped.) The indoor unit numbers in a group are indicated one after another.
  • Page 49 To check all the indoor unit addresses using an arbitrary wired remote controller. (When communication wirings of 2 or more refrigerant lines are interconnected for central control) TEMP. ON / OFF TIMER SET MODE TIME SAVE VENT FILTER RESET TEST SWING/FIX UNIT LOUVER (Execute it while the units are stopped.)
  • Page 50 Changing the indoor unit address using a remote controller To change an indoor unit address using a wired remote controller. The method to change the address of an individual indoor unit (the indoor unit is paired with a wired remote controller one-to-one), or an indoor unit in a group. (The method is available when the addresses have already been set automatically.) TEMP.
  • Page 51 To change all the indoor unit addresses using an arbitrary wired remote controller. (The method is available when the addresses have already been set automatically.) (When communication wirings of 2 or more refrigerant lines are interconnected for central control) NOTE You can change the addresses of indoor units in each refrigerant line using an arbitrary wired remote controller.
  • Page 52 TEMP. ON / OFF TIMER SET MODE TIME SAVE VENT FILTER RESET TEST SWING/FIX UNIT LOUVER Finish 5, 7 Press to finish setting Push the TIME buttons repeatedly to change the value of the indoor unit address in SET DATA. Change the value in SET DATA to that of a new address.
  • Page 53 Check code clearing function How to clear the check code using the wired remote controller Clearing a check code of the outdoor unit Clear the currently detected outdoor unit for each refrigerant line to which the indoor unit controlled by the remote controller is connected. (The indoor unit check code is not cleared.) Use the service monitoring function of the remote controller.
  • Page 54 Monitoring function of wired remote controller The following monitoring function is available if the remote controller of RBC-ATM32E is used. TEMP. ON / OFF TIMER SET MODE TIME SAVE VENT FILTER RESET TEST SWING/FIX UNIT LOUVER Content Enter the service monitoring mode using the remote controller to check the sensor temperature or operation status of the remote controller, indoor unit, and outdoor unit.
  • Page 55 Target outdoor unit (SMMS-e) Unit Remote controller display example Room temperature (Use to control) ×1 ˚C Room temperature (Remote controller) ×1 ˚C Indoor suction air temperature (TA) × ˚ l i o × ˚ [0024]=24˚C l i o × ˚ l i o ×...

  • Page 56: Troubleshooting

    8. TROUBLESHOOTING 8-1. Overview (1) Before engaging in troubleshooting (a) Applicable models All Super Modular Multi System (SMMS-e) models. (Indoor units: MM , Outdoor units: MMY-MAP ∗ ∗∗∗ ∗∗∗ ∗ (b) Tools and measuring devices required • Screwdrivers (Philips, flat head), spanners, long-nose pliers, nipper, pin to push reset switch, etc. •...

  • Page 57: Troubleshooting Method

    8-2. Troubleshooting method The remote controllers (main remote controller and central control remote controller) and the interface P.C. board of an outdoor unit are provided with an LCD display (remote controller) or a 7-segment display (outdoor interface P.C. board) to display operational status. Using this self-diagnosis feature, the trouble site / trouble part may be identified in the event of a trouble by following the method described below.
  • Page 58 (Check code detected by main remote controller) Check code Display of receiving unit Outdoor 7-segment display Indicator light block Typical fault site Description of trouble Main remote control Operation Timer Ready Sub-code Flash No master remote control, Signals cannot be received from indoor unit; –...
  • Page 59 List of Check Codes (Outdoor Unit) (Check code detected by SMMS-e outdoor interface - typical examples) If “HELLO” is displayed on the oudoor 7-segment for 1 minute or more, turn off the power supply once and then turn on the power supply again after passage of 30 seconds or more. When the same symptom appears, it is considered there is a possibility of I/F board trouble.
  • Page 60 Check code Display of receiving unit Outdoor 7-segment display TCC-LINK Indicator light block central control Typical problem site Description of problem or main remote Operation Timer Ready Sub-code control Flash display Outdoor heat exchanger Outdoor heat exchanger gas side temperature 01: TG1 gas side temperature sensors (TG1, TG2) have been open/...
  • Page 61 Check code Display of receiving unit Outdoor 7-segment display TCC-LINK Indicator light block central control Typical problem site Description of problem or main remote Operation Timer Ready Sub-code Flash control display Fan- Fan- Sub- Sub- IPDU IPDU IPDU IPDU code code There are insufficient number of IPDUs (P.C.
  • Page 62 (Check code detected by IPDU featuring in SMMS-e standard outdoor unit - typical examples) Check code Display of receiving unit Outdoor 7-segment display TCC-LINK Indicator light block Typical problem site Description of problem central control or main remote Operation Timer Ready Sub-code Flash control...

  • Page 63: Troubleshooting Based On Information Displayed On Remote Controller

    8-3. Troubleshooting based on information displayed on remote controller Using main remote controller (RBC-AMT32E) (1) Checking and testing When a trouble occurs to an air conditioner, a check code and indoor unit No. are displayed on the display window of the remote controller. Check codes are only displayed while the air conditioner is in operation.
  • Page 64 Using indoor unit indicators (receiving unit light block) (wireless type) To identify the check code, check the 7-segment display on the header unit. To check for check codes not displayed on the 7-segment display, consult the “List of Check Codes (Indoor Unit)” in “8-2. Troubleshooting method”. : Blinking (0.5 seconds) : Lighting : Goes off...
  • Page 65 Light block Check code Cause of trouble Heat exchanger temperature sensor (TCJ) trouble Operation Timer Ready Heat exchanger temperature sensor (TC2) trouble Indoor unit temperature Heat exchanger temperature sensor (TC1) trouble sensor trouble Ambient temperature sensor (TA) trouble Alternate blinking Discharge temperature sensor (TF) trouble Discharge temperature sensor (TD1) trouble Discharge Operation Timer...
  • Page 66 Light block Check code Cause of trouble Operation Timer Ready Occupancy sensor trouble Outdoor EEPROM trouble Synchronized blinking Other (indications not involving check code) Light block Check code Cause of trouble Operation Timer Ready – Test run in progress Synchronized blinking Operation Timer Ready Setting incompatibility...

  • Page 67: Check Codes Displayed On Remote Controller And Smms-E Outdoor Unit (7-Segment Display On I/F Board) And Locations To Be Checked

    8-4. Check Codes Displayed on Remote Controller and SMMS-e Outdoor Unit (7-Segment Display on I/F Board) and Locations to Be Checked For other types of outdoor units, refer to their own service manuals. Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations)
  • Page 68 Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Communication Indoor unit Indoor- Stop Displayed when problem is 1. Check connector indoor trouble between Application detected unit (CN521(red) Application control kit Application control kit...
  • Page 69 Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Outdoor- All stop Signal cannot be transmitted • Check power supply to outdoor to other outdoor units for at outdoor units.
  • Page 70 Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Indoor unit Indoor TCJ Stop of Sensor resistance is infinity • Check connection of TCJ sensor problem corresponding or zero (open/short circuit).
  • Page 71 Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Indoor Indoor TF Stop of Sensor resistance is infinity • Check connection of TF unit sensor problem corresponding or zero (open/short circuit).
  • Page 72 Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code IPDU Compressor All stop Overcurrent is detected • Check for defect in Compressor 1 problem several seconds after compressor.
  • Page 73 Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Trouble in All stop Sensor resistance is infinity • Check connection of TK1 TK1 sensor temperature or zero (open/short circuit). sensor connector.
  • Page 74 Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Oil level All stop No temperature change is • Check for disconnection of TK1 oil circuit detection circuit detected by TK1 despite TK1 sensor.
  • Page 75 Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code No. of priority Duplicated All stop More than one indoor units • Check displays on priority indoor units priority indoor have been set up as priority indoor unit and outdoor...
  • Page 76 Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Discharge All stop Discharge temperature • Check outdoor service temperature (TD1) exceeds 115 ˚C. valves (gas side, liquid TD1 problem side) to confirm full opening.
  • Page 77 Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Detected indoor Indoor unit Indoor overflow All stop • Float switch operates. • Check float switch connector. address problem •...
  • Page 78 Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Detected 4-way valve All stop Abnormal refrigerating cycle • Check for defect in main outdoor unit No. reversing data is collected during body of 4-way valve.
  • Page 79 Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code IPDU Outdoor fan All stop (Sub code: #0) • Check fan motor. Element short IPDU problem Fan IPDU over current •...
  • Page 80 Check codes Detected by TCC-LINK Central Control Device Check code Location Problem detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote detection Sub-code controller TCC-LINK TCC-LINK Continued Central control device is • Check for defect in central central control operation unable to transmit signal.

  • Page 81: Diagnostic Procedure For Each Check Code (Indoor Unit)

    8-5. Diagnostic Procedure for Each Check Code (Indoor Unit) * Please refer to the multi outdoor unit service manual excluding these. [P12 trouble] Power off. Is not connection trouble or Repair the connector disconnection on the connector connection. CN210 of indoor unit P.C.
  • Page 82 [E11 trouble] Is the connection for the UART communication Repair of connector connector (Internal board connection. CN521 red/Optional board CN1 red) normal? Is connector Replacement of the lead wire for the UART connectorfs lead wire. communication cut? Red LED (LD1) Lead wire is cut or failure of external output board of input/output board.
  • Page 83 [F30 trouble] Is connection of the occupancy Correct the connector sensor connector connection. (CN214) normal? By the wired remote controller, change the Is DN code [B5] setup? enable DN code [B5] from [0000] → [0001] Is the Occupancy Exchange the Occupancy sensor unit normal? sensor unit Check the indoor main...
  • Page 84 [Wireless remote controller trouble] Use wirelss remote Was wireless controller at the first time remote controller used after install RBC-AX32UM at the first Is connection of lead wire between Repair the connection. CN214 of indoor P.C.board and RBC-AX32UM correct? Replace the RBC-AX32UM Replace the indoor P.C.

  • Page 85: Sensor Characteristics

    8-6. Sensor characteristics Indoor unit Temperature sensor characteristics Indoor TA sensor Temperature [˚C] Resistance [kΩ] 33.9 Resistance 26.1 [kΩ] 20.3 15.9 12.6 10.0 Temperature [˚C] Temperature [˚C] Resistance [kΩ] –20 99.9 –15 74.1 Indoor TC1 sensor –10 55.6 –5 42.2 32.8 25.4 19.8...
  • Page 86 <Maintenance/Check list> Aiming in environmental preservation, it is strictly recommended to clean and maintain the indoor/outdoor units of the operating air conditioning system regularly to secure effective operation of the air conditioner. It is also recommended to maintain the units once a year regularly when operating the air conditioner for a long time.

  • Page 87: Board Exchange Procedures

    9. P.C. BOARD EXCHANGE PROCEDURES Indoor unit 9-1. Replacement of indoor P.C. boards Part code Model type P.C. board type ∗∗∗ 431-6V-592 MMU-AP 7MH series MCC-1643 <Note: when replacing the P.C. board for indoor unit servicing> The nonvolatile memory (hereafter called EEPROM, IC503) on the indoor unit P.C. board before replacement includes the model specific type information and capacity codes as the factory-set value and the important setting data which have been automatically or manually set when the indoor unit is installed, such as system/ indoor/group addresses, high ceiling select setting, etc.
  • Page 88 [1] Setting data read out from EEPROM The setting data modified on the site, other than factory-set value, stored in the EEPROM shall be read out. Step 1 Push button on the remote controller simultaneously for more than 4 seconds. * When the group operation control is performed, the unit No.
  • Page 89 B) In case that power of the indoor units cannot be turned on individually (Case 1) a) Remove temporarily the group wire connected to the terminal blocks A and B of the exchanged indoor unit. b) After connecting the remote controller wire only to the removed terminal block, turn on power of the indoor units and proceed to [3].
  • Page 90 Step 4 Write the on-site setting data to the EEPROM, such as address setting, etc. Perform the steps 1 and 2 above again. Step 5 Change the CODE No. (DN) to “ ” by pushing buttons for the temperature setting. (this is the setting for the filter sign lighting time.) Step 6 Check the setting data displayed at this time with the setting data put down in [1].
  • Page 91 Table 1. Setting data (CODE No. table (example)) CODE No. (DN) Item Setting data Factory-set value Filter sign lighting time Depending on Type Filter pollution level 0000: standard Central control address 0099: Not determined Heating suction temperature shift 0002: +2 ˚C Cooling only 0000: Heat pump Type...

  • Page 92: Detachments

    10. DETACHMENTS WARNING CAUTION Be sure to stop operation of the air conditioner before Be sure to put on gloves during working time; work and then turn off switch of the breaker. otherwise an injury will be caused by a part etc. No.
  • Page 93 No. Part name Procedure Remarks 1. Detachment Adjust corner cap 1) Remove the air intake grille. (Refer to 1 of 2) Loosen the fixing screws on the adjust corner cap. (Ø4 × 12, 4 pcs.) Adjust corner 3) Slide the adjust corner cap to outside to remove it. Screw 2.
  • Page 94 No. Part name Procedure Remarks 1. Detachment Control P.C. board Clamp 1) Remove the electric parts cover. (Refer to 1 of 2) Remove connectors which are connected from the control P.C. board to the other parts and then remove wiring from the clamp. NOTE Unlock the lock of the housing part and then remove the connector.
  • Page 95 No. Part name Procedure Remarks 1. Detachment Drain pan 1) Remove the ceiling panel and the electrical parts covers. Fixing screws (Refer to items -1 and -1.) 2) Remove the wiring cover. (Fixing screw Ø4 × 8, 3pcs.) 3) Remove the wiring fixing plate. (Fixing screw Ø4 ×...
  • Page 96 No. Part name Procedure Remarks 1. Detachment Drain pump 1) Remove the drain pan. (Refer to -1.) 2) Remove the drain pump connector (CN504: 2P, White) connected to the control P.C. board and remove the lead wires from the clamp. 3) Remove the fixing screws to remove the drain pump.
  • Page 97 No. Part name Procedure Remarks 1. Detachment Fan motor Shoulder screws (Black) 1) Remove the turbo fan, electric parts cover, wiring cover and wiring fixing plate. (Refer to -1-2, -1-3.) 2) Remove the fan motor connector (CN210, White, 7P) Motor lead wire cover connected to the control P.C.
  • Page 98 No. Part name Procedure Remarks 1. Detachment 1) Remove the drain pan. (Refer to -1.) 2) Pull out the sensor to be exchanged from the sensor Sensor holder. 3) Remove the connector connected to the control P.C. board, and take off wires from the clamp. (Refer to 2.
  • Page 99 No. Part name Procedure Remarks 1. Detachment Heat exchanger 1) Recover refrigerant gas. 2) Remove the refrigerant pipe at indoor unit side. 3) Remove the drain pan. (Refer -1.) 4) Disconnect the heat exchanger sensor (TC1, TC2, TCJ), PMV lead wires connectors from the control P.C. board, and then remove their lead wires from the clamp.

  • Page 100: Exploded Views And Parts List

    11. EXPLODED VIEWS AND PARTS LIST MMU-AP0057MH-E (TR), AP0077MH-E (TR), AP0097MH-E (TR), AP0127MH-E (TR) – 100 –...
  • Page 101 MMU-AP0157MH-E (TR), AP0187MH-E (TR) – 101 –...
  • Page 102 ∗∗∗∗ Q’ty/Set MMU-AP MH-E (TR) Location Part No. Description 0057 0077 0097 0127 0157 0187 43120277 FAN, ASSY TURBO, TG321 43122165 BELL MOUTH 43172259 PAN ASSY, DRAIN 4312C161 MOTOR, FAN, ICF-340D60-1(N) 4314N098 MOTOR, PMV, EFM-MD12TF-3 43146713 VALVE, PMV, EDM-B25YGTF-3 43146714 VALVE, PMV, EDM-B40YGTF-3 4314J557 REFRIGERATION CYCLE ASSY...
  • Page 103 E-Parts ∗∗∗∗ Q’ty/Set MMU-AP MH-E (TR) Location Part No. Description 0057 0077 0097 0127 0157 0187 43050425 SENSOR ASSY, SERVICE, TC (F6) 43150320 SENSOR ASSY, SERVICE, TG (F4) 43160574 TERMINAL, 4P 43160626 TERMINAL BLOCK, 2P, 20A 4316V592 PC BOARD ASSY, MCC-1643 43459017 PC BOARD ASSY, TCB-PCUC1E 43F50426...
  • Page 104 Ceiling panel RBC-UM21PG (W)-E Location Q’ty/Set Part No. Description RBC-UM21PG(W)-E 43109441 GRILLE, AIR INLET 43180361 AIR FILTER 4342D001 MOTOR, LOUVER, MSBPC20F04 43107296 OUTLET, AIR FORM 43107297 OUTLET, AIR FORM 43122166 LOUVER ASSY 4310A142 COVER, PANEL ASSY 4310A143 COVER, PANEL ASSY 43107298 PLATE, FIX PANEL (A) 43107299...
  • Page 105 Wireless remote controller kit RBC-AX32UM (W)-E Location Q’ty/Set Part No. Description RBC-AX32UM(W)-E 4316V616 PC BOARD ASSY, REMOTE RECIEVER 43162088 COVER, WRS 43108036 COVER, PANEL WRS 43160665 LEAD 43408061 COVER, WIRELESS 43166018 REMOTE CONTROLLER, WIRELESS, WH-L11SE 43F83071 HOLDER, REMOTE, CONTROLLER – 105 –...
  • Page 106 Occupancy sensor TCB-SIR41UM-E Location Q’ty/Set Part No. Description TCB-SIR41UM-E 43162088 COVER, WRS 43108037 COVER, PANEL WRS 43160666 LEAD 43408062 COVER, SENSOR 43469067 THERMOSTAT – 106 –...
  • Page 107 TOSHIBA CARRIER CORPORATION 72-34 Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa 212-8585, JAPAN Copyright © 2017 TOSHIBA CARRIER CORPORATION, ALL Rights Reserved. Revision record First issue — — Jan., 2017 Revision 1 The item of CODE NO. C2 was deleted. Page 91 Jun., 2017...

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Mmu-ap0077mh-eMmu-ap0097mh-eMmu-ap0127mh-eMmu-ap0157mh-eMmu-ap0187mh-e

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