Carrier TOSHIBA MMK-UP0071HP-UL Service Manual
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Carrier TOSHIBA MMK-UP0071HP-UL Service Manual

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FILE NO. SVM-22081
SERVICE MANUAL
MULT TYPE
<High Wall Types>
MMK-UP0071HP-UL
MMK-UP0091HP-UL
MMK-UP0121HP-UL
R410A
January, 2023

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  • Page 1 FILE NO. SVM-22081 SERVICE MANUAL MULT TYPE <High Wall Types> MMK-UP0071HP-UL MMK-UP0091HP-UL MMK-UP0121HP-UL R410A January, 2023...

  • Page 2: Table Of Contents

    Adoption of R410A Refrigerant This Air Conditioner is a new type which adopts a new refrigerant R410A an environmentally friendly refrigerant. CONTENTS PRECAUTION FOR SAFETY ................NEW REFRIGERANT (R410A) ................ 1. SPECIFICATIONS ..................DIMENSIONAL DRAWING ............... WIRING DIAGRAM ................... PARTS RATING..................REFRIGERANTING CYCLE DIAGRAM ...........
  • Page 3 He or she has been trained to install, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such operations by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to these operations.
  • 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: 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 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: New Refrigerant (R410A)

    • Refrigerant R410A This air conditioner adopts a type refrigerant R410A which does not deplete the ozone layer. 1. Safety Caution Concerned to R410A Refrigerant Accompanied with change of refrigerant, the refrigerating oil has been also changed. Therefore, be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into the refrigerating cycle of the air conditioner with new refrigerant during installation work or service work.
  • Page 12 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 2) Tools exclusive for R410A, but can be also used for conventional refrigerant 3) Tools commonly used for R410A and for conventional refrigerant The table below shows the tools exclusive for R410A and their interchangeability.

  • Page 13: Specifications

    1. SPECIFICATIONS Indoor unit : High wall type Model name MMK-UP0071HP-UL MMK-UP0091HP-UL MMK-UP0121HP-UL Cooling Capacity 12.0 (kBTU/h) Heating Capacity 10.5 13.5 (kBTU/h) 1Ph. 208/230V ~ 60Hz Power supply Electrical Running current 0.15 0.16 0.18 characteristics Power consumption 0.015 0.016 0.017 (kW) Height (in)

  • Page 14: Dimensional Drawing

    2. DIMENSIONAL DRAWING 31.4"(798) Air Filter Air Inlet Front Panel Grille Inlet 9.0"(230) Back Body 2.0" 2.0" (50) (50) Air Outlet Heat Exchanger Knock Out System Knock Out System 2.6" 2.2" 2.2" 2.6" (55) (55) (66.5) (66.5) 2.3" 0.7" Installation plate hanger (58) (19) 0.9"...

  • Page 15: Wiring Diagram

    3. WIRING DIAGRAM - 15 -...

  • Page 16: Parts Rating

    4. PARTS RATING 4-1. Parts Rating Parts Name Type Specications Fan motor (for indoor) ICF-340-30-6 Output (Rated) 30W, DC340V 4 phase, DC12V Louver motor 24BYJ48A-080 16.4"(418mm) 10kΩ at 77˚F(25˚C) Thermo. Sensor (TA sensor) Heat exchanger sensor (TC1 sensor) 10kΩ at 77˚F(25˚C) Ø0.16"(4mm), 19.7''(500mm) Heat exchanger sensor (TC2 sensor) 10kΩ...

  • Page 17: Refrigeranting Cycle Diagram

    5. REFRIGERANTING CYCLE DIAGRAM Liquid side Gas side Strainer Capillary tube Air heat exchanger at indoor side Pulse Motor Valve (PMV) Distributor Sensor (TCJ) Sensor (TC2) Sensor (TC1) Sensor Fan motor (TA) Functional part name Functional outline Pulse Motor Valve (Connector CN82 (6P): Blue) 1) Controls super heat in cooling operation 2) Controls under cool in heating operation...

  • Page 18: Control Outline

    6. CONTROL OUTLINE 6-1. 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 (1) In heating operation, the upper limit of the fan tap is set by Prevention of one with higher temperature of TC2 sensor and TCJ cold air sensor. discharge • In D and E zones, priority •...
  • 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 2.0F°(1°C) lower than the setting temperature.
  • Page 23 Item Outline of specifications Remarks PRESET operation To operate the air conditioner with the setting (Wireless remote memorized. control specific (1) Press the PRESET button. The setting memorized operation) will be indicated and the air conditioner operates with regards to the setting. •...
  • Page 24 Item Outline of specifications Remarks Secondary Secondary heating can be used while heating operations are performed. heating <Control Outline (Normal Mode)> 1) If the difference between the indoor temperature and the outdoor temperature is large while the air conditioner is operating, turn ON the secondary heating.
  • Page 25 Item Outline of specifications Remarks Secondary DN [C5] Data Secondary heating mode heating (Continued) 0000 Normal mode (Factory default) 0001 Flip mode : Set temp. out (high) [ºF(ºC)] DN [C6] Data "-0015": 5ºF(-15ºC) to "0015": 59ºF(15ºC) -0015 "0000": 32ºF(0ºC) (Factory default) 0015 [ºF(ºC)] DN [C7]...

  • Page 26: Communication Type, Model Names And The Maximum Number Of Connectable Units

    7. COMMUNICATION TYPE, MODEL NAMES AND THE MAXIMUM NUMBER OF CONNECTABLE UNITS 7-1. This air conditioning (U series) has new communication specifications, and TU2C- Link (U series) and TCC-Link (other than U series) differ in a communication type. For the communication type and the model names such as each unit or remote controllers, refer to the following table.

  • Page 27: Configuration Of Control Circuit

    8. CONFIGURATION OF CONTROL CIRCUIT 8-1. Indoor Controller block diagram (MCC-1696) 8-1-1. Connection of wired remote controller Wired header remote controller (Up to 2 link) Schedule timer (weekly timer mode) Display Display LCD Function setup LCD driver Key switch Display LED Function setup Key switch DC5V...
  • Page 28 8-1-2. Connection of Wireless Remote Controller Central control remote controller (Sold separately) Follower unit Indoor unit #1 Header unit Indoor control P.C. board (MCC-1696) Central control communication circuit DC20V Remote controller communication circuit DC12V EEPROM Receiver and Display P.C. board DC5V TA sensor (WP-033)
  • Page 29 8-2. Indoor P.C. Board MCC-1696 - 29 -...
  • Page 30 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 31 8-3. Functions at test run � 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 32 <RBC-AWSU52-UL> In the “Field setting menu” screen, press ] and [ ] to select “Test mode”, and then press [ Set/Fix]  Test mode is set, and returns to the “Field setting menu” screen. Press the [ Return] button 2 times, to open screen (2).
  • Page 33 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 34 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 35: Applied Control

    9. APPLIED CONTROL 9-1. Setup of Selecting Function in Indoor Unit (Be Sure to Execute Setup by a Wired Remote Controller) <RBC-AMT***> Push the buttons simultaneously and hold for at CODE No. least 4 seconds. SET DATA 00 01 SETTING TEST UNIT No.
  • Page 36 <RBC-AWSU52-UL> Press [ Menu] to open the “Menu” Press and hold [ Menu] and [ ] at the same time to open “Field setting menu”  Press and hold 4 seconds. In the “Field setting menu” screen, press ] and [ ] to select “DN setting”, and then press [ Set/Fix]...
  • Page 37 Indoor unit function Code No. (DN Code) table (includes functions needed to perform applied control on site) Description Item At shipment Filter display delay timer 0000: None 0001: 150H Depending on model 0002: 2500H 0003: 5000H type 0004: 10000H t l i f 0001: High degree of dirt (Half of standard time) Central control address 0001: No.1 unit...
  • Page 38 Description Item At shipment ° : F ° 0001: °F c i t Depending on model type High-ceiling adjustment (Air flow selection) Timer setting 0000: Available 0001: Unavailable 0000: Available (wired remote controller) (can be performed) (cannot be performed) Dual set point 0000: Unavailable 0002: Available 0000: Unavailable...
  • Page 39 Item Description At shipment Notice code 0000: None 0000: None number 01 0001 ~ 0255 : Notice code 0129 : Notice code (201) Notice code 0000: None 0130 : Notice code (202) number 02 (0001 ~ 0255 : TU2C-LINK only) Notice code 0000: None number 03...
  • Page 40 Type DN code “10” Value Type Model MMU-UP****HP-UL 4 Way Cassette 0001 MMK-UP****HP-UL 0008 High wall *1 Default value stored in EEPROM mounted on service P.C. board Indoor Unit Capacity DN code “11” Setting data Type Disable 0000 * 0001 0003 0005 * EEPROM initial value on the P.C.board for indoor unit servicing.
  • Page 41 9-2. Applied Control in Indoor Unit � Remote location ON/OFF control box (TCB-IFCB-4UL) [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 42 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 43 <RBC-AWSU52-UL> Press [ Menu] to open the “Menu” Press and hold [ Menu] and [ ] at the same time to open “Field setting menu” Press and hold 4 seconds. In the “Field setting menu” screen, press [ ] and [ ] to select “DN setting”, and then press [ Set/Fix] Press [...
  • Page 44 Auto-off feature control [Function] • This function controls the indoor units individually. It is used when the start operation from outside is unnecessary but the stop operation is necessary. • A card switch box or card lock helps protect customers from forgetting to turn off the indoor unit. (not including the following Card Input 3) •...
  • Page 45 [Control items] External contact terminal Function Close (Status that card is inserted) Open (Status that card is taken out) Manual prohibition release Manual prohibition Card Input 1 (Manual operation) (Operation stop) Manual prohibition release Manual prohibition Card Input 2 (Automatic operation) (Operation stop) Operation status continues Operation status continues and setting temperature...
  • Page 46 [The example of Card Input 5 setting] Code No. (DN) setting External contact terminal Case. [16A] [16b] [16C] [16d] [16F] [170] [171] [172] [173] Close (Status that card is inserted) Open (Status that card is taken n out) data data data data data...
  • Page 47 Notice code signal Notice code is a function dedicated to TU2C-Link communication. See service manual for u series outdoor unit for details of Notice code. [Function] • Notice Code is issued if there is signal input to connector of outdoor unit P.C. board. This can be used in cases such as when confirming state of outdoor unit (filter clogging, etc.) by air conditioner system.
  • Page 48 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 49 <Indoor unit address> 13 13 13 13 13 Push the TEMP. buttons repeatedly to set the CODE No. to Push the TIME buttons repeatedly to set an indoor unit address. Push the button. (It is OK if the display turns on.) <Group address>...
  • Page 50 <Indoor unit address> ] to set the item code No. to 13. ] to black highlight the item code (DN), and then press [ ] and [ Press [ ] to set the data indoor unit address. Press [ ] to black highlight the data, and then press [ ] and [ After finishing setting the data of the item code (DN), press [ Set/Fix]...
  • Page 51 To find an indoor unit’s position from its address Procedure to know the position of indoor unit body by address while indoor unit No. is known. • Confirm each indoor unit address while indoor unit is stopped. (Be sure to stop air conditioner.) <RBC-AMT >...
  • Page 52 <RBC-AWSU52-UL> [Procedure] The position of indoor unit body by address Push the [ MENU] button to display the menu screen. Push and hold the [ MENU] button and the [ ] button at the same time to display the “Field setting menu”. →...
  • Page 53 Check code clearing function How to clear the check code using the wired remote controller <RBC-AMT > 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.
  • Page 54 <RBC-AW5U52-UL> Displays the last 10 check codes, and at which unit and when they occurred. In the “Field setting menu” screen, press ] and [ ] to select “Alarm history”, and then press [ Set/Fix] NOTE • The check code history data shows a history of 10 occurrences. If the occurrences exceed 10, the oldest data is deleted. •...
  • Page 55 Monitoring function of wired remote controller <RBC-AMT > 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 56 <RBC-AWSU52-UL> Displays the codes and data indicating the operating condition and temperature of each sensor on the indoor units, outdoor units, and remote controllers. In the “Field setting menu screen, press ” ] and [ ] to select “Monitor function ”...

  • Page 57: Troubleshooting

    10. TROUBLESHOOTING 10-1. Overview (1) Before engaging in troubleshooting (a) Applicable models All Super Modular Multi System (SMMS- ) models. (Indoor units: MM -UP , Outdoor units: MMY-M P (b) Tools and measuring devices required • Screwdrivers (Philips, flat head), spanners, long-nose pliers, nipper, pin to push reset switch, etc. •...
  • Page 58 10-2. Troubleshooting method The remote controllers (main remote controller and central control device) and the interface P.C. board of an outdoor unit are provided with an 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 59 (Check code detected by remote controller) Check code Display of receiving unit Outdoor 7-segment display Indicator light block Typical trouble site Description of trouble Remote control Operation Timer Ready Sub-code Flash No master remote control, Signals cannot be received from indoor unit; –...
  • Page 60 List of Check Codes (Outdoor Unit) (Check code detected by 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 61 Check code Display of receiving unit Outdoor 7-segment display Central Indicator light block control or main Typical problem site Description of problem remote Operation Timer Ready Sub-code Flash controller display Outdoor suction 01: TS1 sensor Outdoor suction temperature sensor temperature sensor 03: TS3 sensor (TS1,TS3) has been open/short-circuited.
  • Page 62 Check code Display of receiving unit Outdoor 7-segment display Central Indicator light block Typical problem site Description of problem control or main remote Operation Timer Ready Sub-code Flash controller display P.C.board P.C.board Compressor Fan Motor Compressor Fan Motor Trouble in number of There are insufficient number of P.C.
  • Page 63 (Check code detected by Inverter of Compressor featuring in outdoor unit - typical examples) Check code Display of receiving unit Outdoor 7-segment display Central Indicator light block Typical problem site Description of proplem control or main remote Operation Timer Ready Sub-code controller Flash...
  • Page 64 10-3. Troubleshooting by check Display on Remote Controller <RBC-AMT > (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 65 <RBC-AWSU52-UL> Check code When an error occurs in the air conditioner, the check Indoor unit number code and the indoor unit number flash on the display of the remote controller. * The check code is only displayed during the operation. When the check code and indoor unit number are displayed, pressing [ Return] opens the “Check”...
  • Page 66 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 67 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 68 Cause of trouble Light block Check code Operation Timer Ready Occupancy sensor trouble 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 69 10-4. Check Codes Displayed on Remote Controller and SMMS series 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 Check code detection Main Outdoor 7-segment display Description...
  • Page 70 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code No. of indoor Indoor unit Indoor-outdoor All stop Condition 1 • Check power supply to units from communication One indoor unit or more indoor unit.
  • Page 71 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Too many All stop • Combined capacity of • Check capacities of indoor Capacity over indoor units indoor units is too large.
  • Page 72 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Detected Outdoor All stop Outdoor header unit • Check check code outdoor unit No. follower unit receives trouble code from displayed on outdoor trouble outdoor follower unit.
  • Page 73 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code TD2 sensor All stop Sensor resistance is infinity • Check connection of TD2 trouble or zero (open/short circuit). sensor connector.
  • Page 74 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Outdoor All stop Readings of high-pressure • Check connection of high- pressure Pd sensor and low-pressure pressure Pd sensor sensor wiring Ps sensor are switched.
  • Page 75 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code TD1 sensor All stop Discharge temperature of • Check installation of TD1 miswiring compressor 1 (TD1) does sensor.
  • Page 76 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code 01: TK1 oil Oil level All stop No temperature change is • Check for disconnection of circuit trouble detection detected by TK1 despite TK1 sensor.
  • Page 77 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Outdoor All stop Initial setting of I/F P.C. • Check model setting of — capacity not set board has not been P.C.
  • Page 78 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code 1∗: Compressor Activation of All stop High-pressure SW is • Check connection of high- 1 side high-pressure activated.
  • Page 79 Check code Location Check code 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 address trouble •...
  • Page 80 Check code Location Check code 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 (TD2) exceeds 115 ˚C. valves (gas side, liquid TD2 trouble side) to confirm full opening.
  • Page 81 Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code 1∗: Fan P.C. Fan INV. Outdoor fan All stop Protected operation of Fan • Check fan motor. board 1 P.C.
  • Page 82 Check codes Displayed on by Central Control Device Check code Location Check code detection Main Outdoor 7-segment display Description System status Check items (locations) condition(s) remote Check detection Sub-code controller code Indoor unit Indoor-remote Stop of There is no communication •...
  • Page 83 Points to Note When Servicing Compressor (1) When checking the outputs of inverters, remove the wiring from all the compressors. How to Check Inverter Output (1) Turn off the power supply. (2) Remove compressor leads from the compressor P.C. board. (The model with two compressor should remove the wiring for two sets (6 leads).
  • Page 84 10-5. Diagnostic Procedure for Each Check Code (Indoor Unit) - 84 -...
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  • Page 92 10-6. Sensor Characteristics Indoor Unit Temperature sensor characteristics Indoor TA sensor Temperature Resistance [˚F (˚C)] [kΩ] Resistance 32 (0) 33.9 [kΩ] 41 (5) 26.1 50 (10) 20.3 59 (15) 15.9 68 (20) 12.6 77 (25) 10.0 86 (30) 95 (35) 104 (40) 113 (45) 122 (50)

  • Page 93: Replacement Of Service P.c. Board

    11. REPLACEMENT OF SERVICE P.C. BOARD Indoor Unit CAUTION <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 94 [1] Setting data read out from EEPROM (Stop the operation of the unit.) <RBC-AMT > [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.
  • Page 95 <RBC-AWSU52-UL> Push the [ MENU] button to display the menu screen. Push and hold the [ MENU] button and the ] button at the same time to display the “Field setting menu”. • Push and hold the buttons for more than 4 seconds. Push the [ ] / [ ] button to select...
  • Page 96 CODE No. required at least 1. The CODE No. for the Indoor unit type and Indoor unit capacity are Contents required to set the rotation number setting of the fan. 0010 Type 2. If the system/indoor/group addresses are different from those 0011 Indoor unit capacity before replacement, the auto-address setting mode starts and the...
  • Page 97 [3] Writing the setting data to EEPROM (Stop the operation of the unit.) <RBC-AMT > Step 1 Push buttons on the remote controller simultaneously for more than 4 seconds. * In the group control operation, the unit No. displayed for the first time is the header unit No.. At this time, the CODE No.
  • Page 98 <RBC-AWSU52-UL> Push the [ Menu] button to display the menu screen. Push and hold the [ Menu] button and the [ ] button at the same time to display the “Field setting menu”. • Push and hold the buttons for more than 4 seconds. ] / [ Push the [ ] button to select “7.
  • Page 99 Change “Code (DN)” to [0002] with the [ ] / [ ] button. (Filter pollution level) Perform the operation of . Check the other “Code (DN)” also, change “Data” into the setting data written down in [1] Setting data read out from EEPROM if the setting data is different. Return] button.
  • Page 100 Table 1.Setting data(CODE No. table(example)) Item Setting data Factory-set value Filter display delay timer 0002 : 2500H Dirty state of filter 0000 : Standard Central control address 00Un/0099 : Unfixed Specific indoor unit priority 0000 : No priority +3.6°F( Heating suction temperature shift Automatic mode 0001 : No automatic Cooling only...

  • Page 101: Installation Manual

    12. INSTALLATION MANUAL Please read this Installation Manual carefully before installing the Air Conditioner. • This Manual describes the installation method of the indoor unit. • For installation of the outdoor unit, follow the Installation Manual attached to the outdoor unit. ADOPTION OF NEW REFRIGERANT This Air Conditioner uses R410A an environmentally friendly refrigerant.
  • Page 102 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 103 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. Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns, electric shocks and other injuries.
  • Page 104 Warning indications on the air conditioner unit Warning indication Description WARNING WARNING ELECTRICAL SHOCK HAZARD Disconnect all remote ELECTRICAL SHOCK HAZARD electric power supplies Disconnect all remote electric power supplies before servicing. before servicing. WARNING WARNING Moving parts. Moving parts. Do not operate unit with grille Do not operate unit with grille removed.

  • Page 105: Precautions For Safety

    PRECAUTIONS FOR SAFETY • Ensure that all Local, National and International regulations are satisfied • Read this “PRECAUTIONS FOR SAFETY” carefully before Installation • The precautions described below include the important items regarding safety. Observe them without fail. • After the installation work, perform a trial operation (test run) to check for any problem.
  • Page 106 • When work is performed at heights, use a ladder which complies with the ISO 14122 standard, and follow the procedure in the ladder’s instructions. Also wear a helmet for use in industry as protective gear to undertake the work. •...
  • Page 107 • If refrigerant gas has leaked during the installation work, ventilate the room immediately. If the leaked refrigerant gas comes in contact with fire, noxious gas may generate. • Use forklift to carry in the air conditioner units and use winch or hoist at installation of them.
  • Page 108 • Install a circuit breaker that meets the specifications in the Installatio Manual and the stipulations in the local regulations and laws. • Install the circuit breaker where it can be easily accessed by the agent • Under no circumstances the power wire must not be extended Connection trouble in the places where the wire is extended may give rise to smoking and/or a fire.
  • Page 109 Relocation • Only a qualified installer or qualified service person is allowed to relocate the air conditioner. It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks, injury, water leakage, noise and/or vibration may result. •...

  • Page 110: Accessory Parts

    ACCESSORY PARTS Part name Q’ty Shape Usage Installation Manual This manual (Hand over to customers) Owner’s Manual (Hand over to customers) Installation plate Wireless remote controller Batteries size AAA Remote controller holder Mounting screw Ø5/32″ (4 mm) × 1.0″ (25 mm) Flat head wood screw Ø1/8″...

  • Page 111: Selection Of Installation Place

    SELECTION OF INSTALLATION PLACE WARNING • Install the air conditioner at enough strong place to withstand the weight of the unit. If the strength is not enough, the unit may fall down resulting in injury. CAUTION • Do not install the air conditioner in a location subject to a risk of exposure to a combustible gas. If a combustible gas leaks and stays around the unit, a fire may occur.
  • Page 112 Installation diagram of Indoor unit For the rear left and left piping Before installing the wireless remote controller Hook Wall 1. Remove the battery cover. Installation 2. Insert 2 new batteries plate (R03 [AAA] type) following the (+) and (−) Insert the cushion between the positions.

  • Page 113: Installation Of Indoor Unit

    Wireless remote controller • A place where there are no obstacles such as a curtain that may block the signal from the indoor unit. • Do not install the remote controller in a place exposed to direct sunlight or close to a heating source, such as a stove.
  • Page 114 Installation of eletrical cover 2 holes type REQUIREMENT In case of group control, electrical cover 1 hole type need to change to electrical cover 2 holes type. ● Step to remove the electrical cover 1 hole. 1) The electical cover 1 hole can be removed by removing the screw securing the electical cover 1 hole and them pulling out the electical cover 1 hole.

  • Page 115: Cutting A Hole And Mounting Installation Plate

    CUTTING A HOLE AND MOUNTING INSTALLATION PLATE Cutting a hole When the installation plate is directly mounted on the wall In case of installing the refrigerant pipes from the rear: 1. . Securely fit the installation plate onto t 1. . Decide the hole position for piping wall by screwing it in the upper and lower 7.1″...

  • Page 116: Piping And Drain Hose Installation

    PIPING AND DRAIN HOSE INSTALLATION Piping and drain hose forming * Apply heat-insulation for both refrigerant pipe and drain hose surely so that no dew generates inside of the equipment. (Use polyethylene foam for insulating material.) Rear right Rear left Bottom left Left Bottom right...
  • Page 117 How to remove the drains cap Clip the drain cap by needle-nose pliers and pull out. How to fix the drains cap 1) Insert hexagonal wrench (dia. 0.2'' (4 mm) in a centre head. 2) Firmly insert drains cap. Do not apply lubricating oil (refrigerant machine oil) when inserting the drain cap.
  • Page 118 In case of bottom right or bottom left piping • After scribing slits of the back body with a knife or a marking-off pin, cut them with a pair of nippers or an equivalent tool. Slit Left-hand connection with piping Bend the connecting pipe so that it is laid within 1.7″...

  • Page 119: Indoor Unit Fixing

    INDOOR UNIT FIXING DRAINAGE 1. . Run the drain hose sloped downward 1. Pass the pipe through the hole in the wall and hook the indoor unit on the installation NOTE plate at the upper hooks. • Hole should be made at a slight downward 2.

  • Page 120: Refrigerant Piping

    REFRIGERANT PIPING Permissible Piping Length and Refrigerant Piping Height Difference Flare nut and flare works are also different from those of the conventional refrigerant. They vary according to the outdoor unit. Take out the flare nut attached to the main For details, refer to the Installation Manual attached unit of the air conditioner, and use it.
  • Page 121 Tightening connection Insulation Insulation for the pipes should be done CAUTION separately for the liquid side and gas side. Because both of the liquid and gas side pipes • Do not apply excessive torque. Otherwise, the become a low temperature during cooling nut may crack depending on the conditions.

  • Page 122: Electrical Connection

    ELECTRICAL CONNECTION REQUIREMENT WARNING • For power supply wiring, strictly conform to the 1. Use predefined wire and connect th Local Regulation in each country. certainly. • Run the refrigerant piping line and control wirin Keep the connecting terminal free from line in the same line.
  • Page 123 Power supply wire Recommended wire diameter and wire length for power supply wire. Wire Size : 2 × AWG 12 Power supply wiring Up to 164′1″ (50 m) Ground : 1 × AWG 12 or thicker Electric characteristics Voltage Range (V) MOCP Model Power Supply...
  • Page 124 <In the case of combining with outdoor units of Super Modular Multi System u series (SMMS-u)> AWG20 (Up to 1640'5" (500 m)) Uv line and Uc line (L2, L3, L4) Wire size : AWG18 to AWG16 (2-core shield wire, non-polarity) (Up to 3280'10"...
  • Page 125 [Communication line] (L1+L2+L3) = Up to 6561'8"(2000m) L4 = Up to 328'1 (100m) * Even if the indoor unit and the remote controller are “other than U series”, the wirin specification are the same. Remote control wiring 2-core with non-polarity wire is used for wiring of the remote control wiring and group remote controls wiring. Remote control wiring, remote control inter-unit wiring Wire size: AWG20 In case of wired type only...
  • Page 126 Max. number of connectable indoor units, and communication type Unit type Outdoor unit U series U series U series U series Indoor unit U series U series U series U series Remote controller U series U series U series U series Communication type TU2C-Link TCC-Link...
  • Page 127 Wired remote controller wiring • As the wired remote controller wire has non-polarity, there is no problem if connections to indoor unit terminal blocks A and B are reversed. Wiring diagram Terminal block for remote controller Terminal block wiring of indoor unit Wired remote controller unit Wired remote controller wire...
  • Page 128 Wiring Connection Power supply terminal block How to connect the power supply wiring Terminal block for communication/remote and control wiring controller wiring The power supply wire and the control wire can be Screw connected without removing the front panel. Terminal cover Ground screw REQUIREMENT Connect the power supply wire after connecting...
  • Page 129 Wiring connection for flow selector unit How to connect the wiring of flow selector unit Connect the power supply wire and the communication wire supplied with the flow selector unit to the indoor unit. 1. Remove the air inlet grille. Open the air inlet grille upward and pull it toward you.

  • Page 130: Applicable Controls

    APPLICABLE CONTROLS A wired remote controller is necessary for this function. This function cannot be operate with a wireless remote controller. REQUIREMENT CAUTION • When the unit is used for the first time, it takes Set only the “Code(DN)ˮ shown in the following a while for the remote controller to recognize table: Do not set any other “Code(DN)ˮ.
  • Page 131 After finishing setting the data of the item SET DATA Detection temp shift value code (DN), press [ Set/Fix] 0000 No shift “Continue?” is displayed.  0001 +1.8°F (+1°C) 0002 +3.6°F (+2°C) (Factory setting) 0003 +5.4°F (+3°C) 0004 +7.2°F (+4°C) 0005 +9°F (+5°C) 0006...
  • Page 132 Cancelling swing Group control In a group control, a remote controller can control up to maximum 8 or 16 units. (Depending on the outdoor unit.) • The wired remote controller only can control a group control. The wireless remote controller is unavailable for this control.

  • Page 133: Test Run

    TEST RUN A wired remote controller is necessary for this function. This function cannot be operate with a wireless remote controller. Before test run Execute a test run • Before turning on the power supply, carry out the Use the remote controller to check operations. For following procedure.
  • Page 134 In the “Field setting menu” screen, press ] and [ ] to select “Test mode”, and then press [ Set/Fix] Test mode is set, and returns to the “Field  setting menu” screen. Press the [ Return] button 2 times, to open screen (2). Press [ ON/OFF] Operation starts, and in test mode screen (1)
  • Page 135 In case of wireless remote controller (Forced test operation is performed in a different way.) REQUIREMENT • For the operation procedure, be sure to follow the Owner’s Manual. • Finish the forced cooling operation in a short time because it applies excessive strength to the air conditioner.

  • Page 136: Troubleshooting

    TROUBLESHOOTING Confirmation and check When an error occurs in the air conditioner, the Check code check code and the indoor unit number flash on Indoor unit number the display of the remote controller. * The check code is only displayed during the operation.
  • Page 137 Check method On the wired remote controller, central control remote controller and the interface P.C. Board of the outdoor unit (I/F), a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P.C. Board) to display the operation is provided. Therefore the operation status can be known. Using this self-diagnosis function, a trouble or position with error of the air conditioner can be found as shown in the table below.
  • Page 138 Check code Wireless remote controller Wired Sensor block display of Judging Outdoor unit 7-segment display Check code name remote receiving unit device controller Auxiliary code Operation Timer Ready Flash display 00: Header is not detected Outdoor header units quantity trouble 02: Two or more header units 01: Outdoor unit of other line connected...
  • Page 139 Check code Wireless remote controller Wired Sensor block display of Judging Outdoor unit 7-segment display Check code name remote receiving unit device controller Auxiliary code Operation Timer Ready Flash display ─ Oil level down detective protection 01: TK1 sensor trouble 02: TK2 sensor trouble 03: TK3 sensor trouble Oil level detective temp.
  • Page 140 Check code Wireless remote controller Wired Sensor block display of Judging Outdoor unit 7-segment display Check code name remote receiving unit device controller Auxiliary code Operation Timer Ready Flash display ─ Too many outdoor units connected L29 *1 Inverter quantity information No.
  • Page 141 *1 Inverter quantity information (Super Modular Multi System e and u series (SMMS-e, SMMS-u, SHRM-u)) Comp. Inverter Fan Inverter Trouble Comp. 1 Comp. 2 Comp. 1 + Comp. 2 Fan1 Comp. 1 + Fan1 Comp. 2 + Fan1 Comp. 1 + Comp. 2 + Fan1 Fan2 Comp.
  • Page 142 WARNINGS ON REFRIGERANT LEAKAGE Check of Concentration Limit NOTE 2 The standards for minimum room volume are as The room in which the air conditioner is to be follows. installed requires a design that in the event of (1) ) No partition (shaded porti refrigerant gas leaking out, its concentration will not exceed a set limit.
  • Page 143 CONFIRMATION OF INDOOR UNIT SETUP Prior to delivery to the customer, check the address and setup of the indoor unit, which has been installed in this time and fill the check sheet (Table below). Data of four units can be entered in this check sheet. Copy this sheet according to the No.

  • Page 144: How To Replace Main Parts

    13. HOW TO REPLACE THE MAIN PARTS WARNING • Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with the repairs. Electric shocks may occur if the power plug is not disconnected. • After the repairs have been completed (after the front panel and cabinet have been installed), perform a test run, and check for smoking, unusual sounds and other abnormalities.
  • Page 145 Procedures Part name Remarks Front panel 1) Stop operation of the air conditioner and turn off its main power supply. Front panel 2) Open two screw caps and securely remove Air inlet grille screws (2 pcs.) at the front panel. Hooks of front panel Screw...
  • Page 146 Procedures Part name Remarks 5) Pull out TC1, TC2, TCJ sensors from sensor holder of hear exchanger. (Pay attention to mounting positions of each sensor when reassembling of electric parts. Be sure to apply marking, etc to TC2 and TCJ sensors before removing because their shapes are reassembled.) TC1 sensor...
  • Page 147 Procedures Part name Remarks Fan motor 1) Follow the procedure item 3 and 4 . Cross flow fan 2) Loosen the set screw of the cross flow fan. Cross flow fan Body back 0.1''(3.5mm) Vertical louver Fan motor Hexagon screw driver Set screw 3) Remove 2 fixing screws of the motor band.
  • Page 148 Procedures Part name Remarks Drain pan 1) Follow the procedure item 3 . assembly 2) Remove screw holding the electric part cover. Connectors P.C.board Screw Electric part cover Louver motor connector 3) Disconnect the louver motor connector (5P) from P.C. board assembly. 4) Remove fixing screws of the unit display Unit display and remove unit display.
  • Page 149 Procedures Part name Remarks 1) Follow the procedure item 3 and 7 . Vertical louver Vertical louver 2) Remove 2 fixing screws from the base vertical assembly louver then remove the vertical louver assembly from the body back. Screw Screw Cross flow fan 1) Follow the procedure item 3 and 4 .
  • Page 150 Procedures Part name Remarks Heat exchanger 1) Follow the procedure in item 3 and 4 . (Evaporator) 2) Remove 2 fixing screws at the left side of the heat exchanger. 3) Remove 3 fixing screws at the upper and right side of the heat exchanger. 4) Remove the pipe holder from the rear side of the main unit.

  • Page 151: Exploded Views And Parts List

    14. EXPLODED VIEWS AND PARTS LIST Indoor Unit - 151 -...
  • Page 152 Model name MMK-UP****HP-UL Location Part No. Description 0071 0091 0121 43T09590 GRILLE OF AIR INLET ASSY 43T80349 AIR FILTER 43T00806 FRONT PANEL ASSY 43T00917 CAP SCREW 43T22359 HORIZONTAL LOUVER ASSY 43T72336 DRAIN PAN ASSY 43T79322 DRAIN CAP 43T20344 CROSS FLOW FAN ASSY 43T22358 VERTICAL LOUVER ASSY 43T22312...
  • Page 153 Indoor Unit (Part-E) MCC-1696 SW02 CN60 CN213 CN61 SW01 CN50 CN32 CN81 Model name MMK-UP****HP-UL Location Part No. Description 0071 0091 0121 43TN9872 PC BOARD ASSY(MCC-1696) 43T60448 TERMINAL 43T60078 TERMIMAL BLOCK 43T50392 SENSOR,THERMOSTAT 43T50410 TC-SENSOR 43T50414 TC-SENSOR 43T50306 TEMPERATURE SENSOR 43T60548 ASM-HOUSING(PW) 43T60546...
  • Page 154 144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

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