Toshiba MMD-AP0726HP-E Service Manual
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Toshiba MMD-AP0726HP-E Service Manual

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SERVICE MANUAL

INDOOR UNIT
Concealed Duct High Static Pressure Type
<
MMD-AP0726HP-E
MMD-AP0966HP-E
MMD-AP0726HP-TR
MMD-AP0966HP-TR
R410A
AMP Air Conditioning
AIR-CONDITIONER
FILE NO. SVM-16013
MULTI TYPE
>
www.ampair.co.uk | sales@ampair.co.uk

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Summary of Contents for Toshiba MMD-AP0726HP-E

  • Page 1: Service Manual

    FILE NO. SVM-16013 SERVICE MANUAL AIR-CONDITIONER MULTI TYPE INDOOR UNIT Concealed Duct High Static Pressure Type < > MMD-AP0726HP-E MMD-AP0966HP-E MMD-AP0726HP-TR MMD-AP0966HP-TR R410A AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...

  • Page 2: Table Of Contents

    CONTENTS PRECAUTIONS FOR SAFETY ................6 1. SPECIFICATIONS ....................13 2. FAN CHARACTERISTICS ..................14 3. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ............ 15 4. WIRING DIAGRAMS ....................17 5. PARTS RATING ....................... 18 6. REFRIGERANT CYCLE DIAGRAM ................ 19 7. CONTROL OUTLINE ....................20 8.

  • Page 3: Original Instruction

    • 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

    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

    Declaration of Conformity Manufacturer: TOSHIBA CARRIER (THAILAND) CO., LTD. 144 / 9 Moo 5, 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 Specifications Sound pressure level (dBA) Weight (kg) Model Main unit Cooling Heating MMD-AP0726HP-E MMD-AP0966HP-E MMD-AP0726HP-TR MMD-AP0966HP-TR – 12 – AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...

  • Page 13: Specifications

    1. SPECIFICATIONS Concealed Duct High Static Pressure Type (50/60Hz) AP0726HP-E (TR) AP0966HP-E (TR) Model name MMD- Cooling capacity …Note 1 (kW) 22.4 28.0 Heating capacity …Note 1 (kW) 25.0 31.5 Electrical Power supply 1 phase 50Hz 230V(220V-240V) / 1 phase 60Hz 220V characteristics Running current (50/60Hz) 2.80...

  • Page 14: Fan Characteristics

    2. FAN CHARACTERISTICS AP072 type Standard Standard    Air Air    Flow Flow    : :     3800 3800    (m3/h) (m3/h) Standard Standard    Air Air    Flow Flow    : :     3800 3800    (m3/h) (m3/h) 350 ...

  • Page 15: Construction Views (External Views)

    3. CONSTRUCTION VIEWS (EXTERNAL VIEWS) Unit : mm – 15 – AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
  • Page 16 Duct arrangement Unit : mm <Air outlet> 1296(Outside) 98 100100100100100100100100100100100 98 90 90 90 <Air inlet> 1316 58 200 200 58 1297 Electrical control box – 16 – AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...

  • Page 17: Wiring Diagrams

    4. WIRING DIAGRAMS – 17 – AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...

  • Page 18: Parts Rating

    5. PARTS RATING Model MMD-AP 0726HP* 0966HP* KF-340W1000-1 Fan motor EFM-MD12TF-3 Pulse motor Pulse motor valve EFM-A0YGTF-2 TA sensor Lead wire length:218mm ∅4 size lead wire length:1000mm Vinyl tube (Blue) TC1 sensor ∅6 size lead wire length:1000mm Vinyl tube (Black) TC2 sensor ∅6 size lead wire length:1000mm Vinyl tube (Red) TCJ sensor...

  • Page 19: Refrigerant Cycle Diagram

    6. 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 20: Control Outline

    7. CONTROL OUTLINE Indoor unit Control specifications Item Specification outline Remarks Upon power 1. Identification of outdoor unit supply reset When the power supply is reset, the outdoor unit is identified, and control is redirected according to the identification result. 2.
  • Page 21 Item Specification outline Remarks Fan speed 1. The fan operates in one of the four speed modes of “HIGH (HH)”, “MED HH > H+ > H > (H)”, “LOW (L)” and “AUTO” on the basis of a command issued via the L+ >...
  • Page 22 Item Specification outline Remarks Cold air 1. In heating operation, the upper limit of the fan tap is set according to the TCJ: Indoor heat discharge lower of whichever is the higher between TC2 sensor and TCJ sensor exchanger prevention temperatures, on the one hand, and TC1 sensor temperature, on the sensor control...
  • Page 23 Item Specification outline Remarks • Recovery operation Cooling oil While the outdoor unit is recovering cooling oil (refrigerant), the indoor normally takes (refrigerant) units perform the following control tasks: place roughly every recovery control [common for operational (cooling thermostat ON / thermostat OFF / FAN), 2 hours.
  • Page 24 Item Specification outline Remarks Filter sign 1. The indoor fan’s cumulative hours of operation are counted, and when “FILTER ” displayed display these exceed the prescribed value (2500H), a filter replacement signal (not applicable is sent to the remote controller to display a filter sign on it. to wireless type) 2.
  • Page 25 Item Specification outline Remarks DC motor 1) When the fan operation has started, positioning of the stator and the rotor are performed. (Moves slightly with tap sound) 2) The motor operates according to the command from the indoor controller. Notes) •...

  • Page 26: Applied Control And Functions (Including Circuit Configuration)

    8. APPLIED CONTROL AND FUNCTIONS (INCLUDING CIRCUIT CONFIGURATION) 8-1. Indoor controller block diagram 8-1-1. In Case of Connection of Wired (Simple) Remote Controller Wired (Simple) header remote controller (Up to 2 units) Schedule timer Display LCD Display Function setup driver Key switch Display LED Function setup...

  • Page 27: In Case Of Connection Of Wireless Remote Controller

    8-1-2. In Case of Connection of Wireless Remote Controller Indoor unit #1 (Header) (Follower) (Follower) Wireless remote controller kit Indoor control P.C. Board Receiving P.C. Board (MCC-1643) DC20V Remote conroller Remote conroller communication circuit communication circuit Emergent EEPROM operation Power circuit TA sensor DC5V...

  • Page 28: Connection Of Both Wired (Simple) Remote Controller And Wireless Remote Controller

    8-1-3. Connection of Both Wired (Simple) Remote Controller and Wireless Remote Controller Schedule timer Wired (Simple) header remote controller Display LCD Function setup Display driver Key switch EEPROM Function setup DC5V DC5V Power Display LED Key switch circuit Remote controller Secondary Power communication circuit...

  • Page 29: Indoor Circuit Design Board Mcc-1643

    8-2. Indoor Circuit Design Board MCC-1643 – 29 – AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...

  • Page 30: Optional Connector Specifications Of Indoor P.c. Board

    8-2-1. Optional connector specifications of Indoor Circuit Design Board – 30 – AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...

  • Page 31: Fan Ipdu P.c. Board (Mcc-1610)

    8-2-2. Fan IPDU P.C. Board (MCC-1610) Power relay output CN602 CN602 CN702 UART CN504 communication between CN504 UART CN505 communication between CN705 Application control kit Fan motor output U-phase (TCB-PCUC1E) CN705 CN704 CN505 Fan motor output V-phase CN704 CN703 Fan motor output W-phase CN703 CN511 CN500...

  • Page 32: Noise Filter (Mcc-1551)

    8-2-3. Noise filter (MCC-1551) CN04 (White) CN04 (White) Power supply input Power supply output (Neutral) (Neutral) Line Filter CN03 (Red) CN08 (Blue) CN01 (Red) Power supply output (Live) Power supply output Power supply input (Live) for drain pump kit *option –...

  • Page 33: Test Operation Of Indoor Unit

    8-3. Test operation of indoor unit 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 34: Method To Set Indoor Unit Function Dn Code

    8-4. 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 35 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 According to type 0002: 2500H 0003: 5000H 0004: 10000H Dirty state of filter 0000: Standard 0000: Standard 0001: High degree of dirt (Half of standard time)
  • Page 36 Type DN code “10” Value Type Model ∗∗∗ ∗ Concealed Duct High Static Pressure Type MMD-AP 0006 Indoor Unit Capacity DN code “11” Value Capacity 0000* Invalid 0001 007 type 0003 009 type 0005 012 type 0007 015 type 0009 018 type 0011 024 type...

  • Page 37: Applied Control Of Indoor Unit

    8-5. Applied control of indoor unit Control system using Remote location ON/OFF control box (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.
  • Page 38 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 39 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 40 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 41 <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 42 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 indoor unit. 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 43 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 44 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 45 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 46 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 47 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 48 Check code clearing function How to clear the check code using the wired remote controller Clearing an 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 49 Monitoring function of wired remote controller The following monitoring function is available if the remote controller of RBC-AMT32E 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 50 CODE No. Data name Display format Unit Remote controller display example Room temperature (Use to control) ×1 °C Room temperature (Remote controller) ×1 °C Indoor suction air temperature (TA) ×1 °C Indoor coil temperature (TCJ) ×1 °C [0024]=24°C Indoor coil temperature (TC2) ×1 °C Indoor coil temperature (TC1)

  • Page 51: Troubleshooting

    9. TROUBLESHOOTING 9-1. Overview (1) Before engaging in troubleshooting (a) Applicable models Super Module Multi (SMMS-i, SMMS-e, SHRM-i, SHRM-e) models. (Indoor units: MM ∗-AP ∗ ∗ ∗, 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 52: Troubleshooting Method

    9-2. 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 53 (Check code detected by main remote controller) Check code Display of receiving unit Outdoor 7-segment display Indicator light block Typical trouble on site Description of check code Main remote Operation Timer Ready Sub-code controller Flash Signals cannot be received from indoor unit; master remote No master remote controller, ⎯...
  • Page 54 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 IPDU: Intelligent Power Drive Unit (Inverter P.C.
  • Page 55 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 controller Flash display Outdoor suction Outdoor suction temperature sensor 01: TS1 temperature sensor (TS1,TS3) has been open/short-circuited.
  • Page 56 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 controller Flash display A3-IPDU Fan-IPDU A3-IPDU Fan-IPDU ○ ○ ○ ○ ○ ○...
  • Page 57 (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 proplem central control or main remote Operation Timer Ready Sub-code Flash controller...

  • Page 58: Troubleshooting Based On Information Displayed On Remote Controller

    9-3. Troubleshooting based on information displayed on remote controller Using main remote controller (RBC-AMT32E) (1) Checking and testing When a trouble occurs to an air conditioner, a check code and indoor unit No. are displayed on the display window of the remote controller. Check codes are only displayed while the air conditioner is in operation.
  • Page 59 Using TCC-LINK central control remote controller (TCB-SC642TLE2) (1) Checking and testing When a trouble occurs to an air conditioner, a Display of check code Display of Unit No. check code and indoor unit No. are displayed on the display window of the remote controller. UNIT No.
  • Page 60 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 “9-2. Troubleshooting method”. : Blinking (0.5 seconds) : Lighting : Goes off...
  • Page 61 Cause of trouble Light block Check code 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 62 Cause of trouble Light block Check code Operation Timer Ready Outdoor EEPROM trouble Synchronized blinking Other (indications not involving check code) Cause of trouble Light block Check code Operation Timer Ready – Test run in progress Synchronized blinking Operation Timer Ready Setting incompatibility –...

  • Page 63: (7-Segment Display On I/F Board) And Locations To Be Checked

    9-4. 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 Trouble detection Outdoor 7-segment display Description System status Check items (locations)
  • Page 64 Check code Location Trouble detection Outdoor 7-segment display Main Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Duplicated indoor address Indoor Duplicated All stop More than one indoor unit • Check indoor addresses. are assigned same address. unit indoor address •...
  • Page 65 Check code Location Trouble detection Outdoor 7-segment display Main Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Trouble in Indoor Stop of Periodic communication • Check remote controller unit communication corresponding between indoor header and wiring.
  • Page 66 Check code Location Trouble detection System Outdoor 7-segment display Main Description Check items (locations) condition(s) status remote detection Check Sub-code controller code IPDU All stop Communication is disrupted • Check wiring and A3-IPDU Fan-IPDU A3-IPDU Fan-IPDU communication between IPDUs (P.C. connectors involved in trouble boards) in inverter box.
  • Page 67 Check code Location Trouble detection System Outdoor 7-segment display Main Description Check items (locations) status condition(s) remote detection Check Sub-code controller code TO sensor All stop Sensor resistance is infinity • Check connection of TO trouble or zero (open/short circuit). sensor connector.
  • Page 68 Check code Location Trouble detection System Outdoor 7-segment display Main Description Check items (locations) status condition(s) remote detection Check Sub-code controller code Indoor Other indoor Stop of Indoor P.C. board does not • Check for defect in indoor P.C. trouble –...
  • Page 69 Check code Location Trouble detection Outdoor 7-segment display Main Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Low oil level All stop Operating compressor <All outdoor units in protection detects continuous state of corresponding line to be low oil level for about 2 hours.
  • Page 70 Check code Location Trouble detection Outdoor 7-segment display System Description Check items (locations) Main status condition(s) remote detection Check controller Sub-code code 01: TK1 oil circuit trouble • Check for disconnection of TK1 sensor. Oil level All stop 02: TK2 oil circuit trouble Check resistance characteristics of TK1 •...
  • Page 71 Check code Location Trouble detection Outdoor 7-segment display Main Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Indoor Outdoor units Stop of In case of different outdoor • Check outdoor unit model. unit model corresponding unit (Not corresponded to (Check whether the –...
  • Page 72 Check code Location Trouble detection Outdoor 7-segment display Main Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Trouble in No. All stop Insufficient number of IPDUs • Check model setting of A3-IPDU Fan-IPDU A3-IPDU Fan-IPDU of IPDUs are detected when power is P.C.
  • Page 73 Check code Location Trouble detection System Outdoor 7-segment display Main Description Check items (locations) status condition(s) remote detection Check Sub-code controller code 01: Compressor 1 side IPDU Activation of high- All stop High-pressure SW is • Check connection of high- 02: Compressor 2 side pressure SW activated.
  • Page 74 Check code Location Trouble detection Outdoor 7-segment display Main Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Outdoor liquid All stop <During cooling operation> • Check full-close operation of outdoor PMV (1, 3, 4). backflow When system is in cooling detection trouble operation, high pressure is...
  • Page 75 Check code Location Trouble detection Outdoor 7-segment display Main Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code Detected outdoor unit No. 4-way valve All stop Abnormal refrigerating cycle • Check for defect in main reversing trouble data is collected during body of 4-way valve.
  • Page 76 Check code Location Trouble detection Outdoor 7-segment display Main Description System status Check items (locations) condition(s) remote detection Check Sub-code controller code (Sub code: #0) Fan IPDU over current Check fan motor. protection circuit • Outdoor fan #0:Element short circuit IPDU •...
  • Page 77 Check codes Detected by TCC-LINK Central Control Device Check code Location Trouble detection Outdoor 7-segment display Description System status Check items (locations) Main condition(s) remote detection Sub-code controller TCC-LINK TCC-LINK Continued Central control device is • Check for defect in central central control operation unable to transmit signal.
  • Page 78 Check code Check code name Cause [P12] Indoor fan motor trouble 1. Installation environment trouble 2. Electric parts trouble 3. Wiring error of fan motor connector 4. Fan motor trouble 5. . Indoor P.C. board trouble Power supply ON Measure the power supply voltage and if the voltage is normal or not.

  • Page 79: Sensor Characteristics

    9-5. 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 80: Board Exchange Procedures

    10. REPLACEMENT OF SERVICE P.C. BOARD 10-1. Indoor Circuit Design Board (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 81 [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. TEST Step 1 Push button on the remote controller simultaneously for more than 4 seconds. ∗...
  • Page 82 (Case 1) B) In case that power of the indoor units cannot be turned on individually 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 83 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 84 CODE No. list (Example) CODE No. (DN) Item Setting data Factory-set value Filter sign lighting time Depending on Type Filter pollution leve 0000: standard Central control address 0099: Not determined Heating suction temperature shift 0002: +2°C (Floor standing type: 0) * Automatically selection Existence of automatic COOL/HEAT mode 0001: No auto mode cooling / heating...

  • Page 85: Fan Ipdu P.c. Board (Mcc-1610)

    10-2. Fan IPDU P.C. Board (MCC-1610) Replacement steps: [Remove PCB] (1) Turn off the power supply of the indoor unit and allow at least one minute for the capacitor to discharge. Confirm that the light of the LED (D640) fades away. (2) Remove all the connectors which are connected to the FAN IPDU.

  • Page 86: Detachments

    11. 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. Part name Procedure Remarks...
  • Page 87 Part name Procedure Remarks ② Control 2. Attachment P.C. board 1) Mount the control P.C. board in the electrical parts MCC-1643 box as before. 2) Attach the electrical parts box as before. Be sure to wire in the electric parts box as before. NOTE 1 Check if there is no missing or contact failure of the connectors.
  • Page 88 Part name Procedure Remarks ④ 2. Attachment Noise filter 1) Mount the noise filter P.C. board in the electrical parts P.C. board box as before. MCC-1551 2) Attach the electrical parts box as before. 3) Be sure to wire in the electric parts box as before. NOTE 1 Check if there is no missing or contact failure of the connectors.
  • Page 89 Part name Procedure Remarks ⑦ 1. Detachment Fan motor, Wires of 1) Perform 1 of ① to open the electrical parts box cover. the fan 2) Perform 1 of ⑥. motor CN703 3) Remove the connectors of the wires of the fan motor CN704 from the fan control P.C.
  • Page 90 Part name Procedure Remarks ⑦ Fan motor, 2. Attachment Fan, 1) Insert the fan to the shaft. 2) Put the fan in the fan case. Attach the nose plate to the original position on the fan case. 3) Screw the fan motor with the motor fixing plate. (M8 x 20, 2 pcs).
  • Page 91 Part name Procedure Remarks ⑨ Sensor 1. Detachment 1) Perform 1 of ① to open the electrical parts box cover. TC1,TC2,TCJ Screw 2) Loosen the fixing screws of the inspection cover and open the inspection cover. 3) Remove the connectors of the wires of TC1 sensor , TC2 sensor and TCJ sensor from the control P.C.
  • Page 92 Part name Procedure Remarks ⑩ Heat Evaporator partition (DN) exchanger Fixing end plate (UP) 2. Attachment 1) Attach the heat exchanger to the original position, attach the fixing end plate (UP) and evaporator partition (Down) as before. 2) Attach the evaporator partition (back) as before. 3) Wire the wires of TC1 sensor, TC2 sensor, and TCJ sensor as before.

  • Page 93: Exploded Views And Parts List

    12. EXPLODED VIEWS AND PARTS LIST 12-1. MMD-AP0726HP-E(TR), MMD-AP0966HP-E(TR) – 93 – AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
  • Page 94 Q'ty/Set MMD- Location Part No. Description AP0726 AP0966 AP0726 AP0966 HP-E HP-E HP-TR HP-TR 43T21463 MOTOR, FAN 43T20346 FAN, MULTI BLADE, LEFT 43T20345 FAN, MULTI BLADE, RIGHT 43T22347 CASE, FAN, LEFT 43T22346 CASE, FAN, RIGHT 43T44562 REFIGERATION CYCLE ASSY 43T47333 BONNET, 12.7 DIA 43T82333 SOCKET, LIQUID 43T97317 NUT, FLARE, 1/2 IN 43T46473 MOTOR, PMV...
  • Page 95 12-2. Drain pump kit (TCB-DP40DPE) Q'ty/Set Location Part No. Description TCB-DP40DPE 43T77302 PUMP DRAIN 43T51313 FLOAT SWITCH 43T54325 RELAY – 95 – AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...

  • Page 96: Electric Parts

    12-3. Electric Parts MMD-AP0726HP-E(TR), MMD-AP0966HP-E(TR) Location Description Parts No. Q'ty / SET SENSOR ASSY, SERVICE 43T50347 SERVICE-SENSOR 43T50476 SERVICE-SENSOR 43T50477 SERV-TERMINAL 43T60458 TERMINAL 43T60362 ASM-PCB-SERV 43T6V669 ASM-PCB-SERV 43T6V670 ASM-PCB-SERV 43T6V671 THERMISTOR, PTC 43T50345 POWER-RELAY 43T54324 HOLDER-TA 43T63356 ASM-PCB(OP) 43459017 CLAMP, DOWN...
  • Page 97 WARNINGS ON REFRIGERANT LEAKAGE Check of Concentration Limit Important The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas NOTE 2 : leaking out, its concentration will not exceed a set limit. The standards for minimum room volume are as follows.
  • Page 98 TOSHIBA CARRIER (THAILAND) CO.,LTD. 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND. AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...

This manual is also suitable for:

Mmd-ap0966hp-eMmd-ap0966hp-trMmd-ap0726hp-tr

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