Инструкция на Мультизональные VRF системы Toshiba (сервис-мануалы) бренда Toshiba

FILE NO. SVM-09059

SERVICE MANUAL <High Wall Type> MMK-AP0073H (IN) MMK-AP0093H (IN) MMK-AP0123H (IN) MMK-AP0153H (IN) MMK-AP0183H (IN) MMK-AP0243H (IN) • This Service Manual describes contents of the new High Wall indoor unit. For the outdoor unit, refer to the Manual with FILE NO. A03-009, A05-004, A05-015. • The…

SAFETY CAUTION

The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents, and keep them. WARNING Check earth wires. Before troubleshooting or repair…

Assembly/Cabling

Insulator check Ventilation After repair work, surely assemble the disassembled parts, and connect and lead the removed cables as before. Perform the work so that the cabinet or panel does not catch the inner cables. If incorrect assembly or incorrect cable connection was done, a disaster such as a…

This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to New Refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has…

4. Tools

(1) Required Tools for R410A Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types. 1) Tools exclusive for R410A (Those which cannot be used for conventional…

5. Recharge of Refrigerant

When recharge of the refrigerant is required, charge the new refrigerant with the specified amount in the procedure as described below. Recover the refrigerant and check there is no refrigerant in the equipment. When the pressure has lowered until indication of the compound gauge pointed -0.1MPa…

1. CONSTRUCTION VIEWS (EXTERNAL VIEWS)

1-1. Indoor Unit Model: MMK-AP0073H (IN), MMK-AP0093H (IN), MMK-AP0123H (IN), MMK-AP0153H (IN), MMK-AP0183H (IN), MMK-AP0243H (IN) 1050 Front panel Air filter Heat exchanger Knock out system 72 Installation plate hanger Knock out system 7 7 73.5 73.5 320 Air inlet Wireless remote controller 82…

2. WIRING DIAGRAM

Model: MMK-AP0073H (IN), MMK-AP0093H (IN), MMK-AP0123H (IN), MMK-AP0153H (IN), MMK-AP0183H (IN), MMK-AP0243H (IN) Pulse motor valve Louver motor Fan motor BLK HBS YEL YEL YEL YEL WHI CN22 RED S Heat exchanger BLU YEL WHI BLK GRN & YEL RED BRW BLU ORN YEL WHI F CN82 (BLU) CN210 (WHI) CN50 (WHI) CN67…

3. PARTS RATING

3-1. Parts Rating Parts Name No. Type Specications ICF-340-30-4 MF-340-30-1RT Output (Rated) 30W, 280-340V DC 1 Fan motor (for indoor) 2 Grille motor MP24Z3T Output (Rated) 1W, 16 poles DC 3 Thermo. Sensor (TA sensor) 318mm 10kΩ at 25°C 4 Heat exchanger sensor (TC1 sensor) Ø4,600mm 10kΩ at 25°C 5…

3-3. Parts Name of Remote Controller

n Display section In the display example, all indicators are displayed for the explanation. In reality only, the selected contents are indicated. • When turning on the main power switch and leak breaker at the first time, SETTING flashes on the display part of the remote controller. • While this…

Air volume select display 19 Unit Number display The selected air volume mode is displayed. (AUTO) (HIGH) (MED.) (LOW) Unit number of the indoor unit selected with the unit select button or abnormal indication of the indoor/outdoor unit. 20 Central control display 15 Louver Number display Displayed…

n Operation section

Push each button to select a desired operation. • The details of the operation needs to be set up once, afterward, the air conditioner can be used by ON / OFF button only. pushing 1 8 TEMP. FILTER RESET TEST ON / OFF TIMER SET FAN MODE TIME SAVE VENT SWING/FIX UNIT LOUVER SET CL FAN button (Air…

3-4. Correct Usage

• When you use the air conditioner for the first time or when you change the SET DATA value, follow the procedure below. ON / OFF button only. From the next time, the operation displayed on the remote controller will start by pushing the n Preparation Turn on the main power switch and/or the leakage…

• Start the cooling operation after approx. 1 minute. [In case of heating (For Heat-pump model only)] • The heating operation mode is selected in accordance with the room temperature and operation starts after approximately 3 to 5 minutes. • After the heating operation has stopped, FAN operation may…

u 4-way Air Discharge Cassette Type (1H series), Compact 4-way Type

• When the air conditioner is not operating, the louvers automatically direct downward. • While the air conditioner is in ready status for heating, the louvers direct upward. The swinging operation starts after heating ready status has been cleared, but “SWING on the remote controller even if the…

FILTER

RESET TEST TIMER SET FAN MODE TIME SAVE VENT SWING/FIX UNIT LOUVER SET CL Unit select button 1 n How to set up the wind direction n How to stop swinging 1 Push 1 Push SWING/FIX during operation. The wind direction changes for every push of the button. SWING/FIX at a desired position while the louver…

3-6. Timer Operation

• A type of timer operation can be selected from the following three types. (Setting of up to 168 hours is enabled.) OFF timer : The operation stops when the time of timer has reached the set time. Repeat OFF timer : Every time, the operation stops after the set time has passed. ON timer : The…

3-7. Installation

Installation place CAUTION • Check that the air conditioner is not installed in a place subject to combustible gas leak. Accumulation of combustible gas around the unit may cause a fire. • Drain the dehumidified water from the indoor unit and outdoor unit to a well-drained place. • Do not put any…

3-8. Maintenance

WARNING Be sure to turn off the main power switch prior to the maintenance. • Please do not intend to do the daily maintenance and/or Air Filter cleaning by yourself. Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to have a service…

NOTE

• For environmental conservation, it is strongly recommended that the indoor and outdoor units of the air conditioner in use be cleaned and maintained regularly to ensure efficient operation of the air conditioner. When the air conditioner is operated for a long time, periodic maintenance (once a…

u High Wall Type

• Open the air inlet grille. Lift the air inlet grille up to the horizontal position. • Take hold of the left and right handles of the air filter and lift it up slightly, then pull downward to take it out from the filter holder. Filter holder Return the air filter • Insert the upper portion of air…

3-9. Air Conditioner Operations and Performance

Check before operation • Check whether earth wire is disconnected or out of place. • Check that air filter is installed to the indoor unit. • Check that the air outlet or inlet is not blocked. • Turn on the main power switch or the circuit breaker for the main power supply to the air conditioner.…

3-10. When the Following Symptoms are Found

Check the points described below before asking repair servicing. Cause Symptom Outdoor unit • White misty cold air or water is out. • Sometimes, noise “Pushu !” is heard. • Fan of the outdoor unit stops automatically and performs defrost operation. • Solenoid valve works when defrost operation…

Confirmation and check

When a trouble occurred in the air conditioner, the check code and the indoor unit No. appear on the display part of the remote controller. The check code is only displayed during the operation. If the display disappears, operate the air conditioner according to the following “Confirmation of error…

2 PRECAUTIONS FOR SAFETY

3-11. Installation Manual 1 ACCESSORY PARTS n Accessory parts Part name Q’ty Shape • 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…

3 SELECTION OF INSTALLATION PLACE

2 PRECAUTIONS FOR SAFETY WARNING CAUTION New Refrigerant Air Conditioner Installation • THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE LAYER. • The characteristics of R410A refrigerant are ; easy to absorb water, oxidizing membrane or oil, and its pressure…

3 SELECTION OF INSTALLATION PLACE

n Wireless remote controller ore Installation plate Cover Insert the cushion between the indoor unit and wall, and tilt the indoor unit for better operation. A C L Hook 170 mm or m ore (Top view) 5 m (Side view) 7m Indoor unit m 45˚ ˚ 45 Reception range Reception range Remote controller Do not allow…

5 CUTTING

A HOLE AND MOUNTING INSTALLATION PLATE 6 PIPING AND DRAIN HOSE INSTALLATION n Cutting a hole ∗ Apply heat-insulation for both refrigerant pipe and drain hose surely so that no dewing generates inside of the equipment. (Use polyethylene foam for insulating material.) In case of installing the…

6 PIPING AND DRAIN HOSE INSTALLATION

u Left-hand connection with piping How to remove the drains cap How to remove the drain hose Clip the drain cap by needle-nose pliers and pull out. 1) Remove the front panel. 2) Remove the screws of drain hose. 3) Pull out the drain hose. Bend the connecting pipe so that it is laid within 43mm above…

7 INDOOR UNIT FIXING

1. Pass the pipe through the hole in the wall, and hook the indoor unit on the installation plate at the upper hooks. 2. Swing the indoor unit to right and left to confirm that it is firmly hooked up on the installation plate. 3. While pushing the indoor unit onto the wall, hook it at the lower part…

9 REFRIGERANT PIPING

Tightening connection Heat insulation CAUTION • Do not apply excessive torque. Otherwise, the nut may crack depending on the conditions. (Unit : N•m) Outer diam. of copper pipe Tightening torque 6.4 mm (dia.) 14 to 18 (1.4 to 1.8 kgf•m) 9.5 mm (dia.) 33 to 42 (3.3 to 4.2 kgf•m) 12.7 mm (dia.) 50 to…

n Power supply wire and communication wires specifications

Indoor unit Power supply wire and communication wires are procured locally. For the power supply specifications, follow the table below. Power supply wiring and communication wiring are to be procured locally. For specifications of the power capacity of the outdoor unit and the power supply wires…

n Wired remote controller wiring

n Wiring Connection • 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. How to connect the power supply wiring and control wiring The power supply wire and the control wire can be connected without removing…

11 APPLICABLE CONTROLS

10 ELECTRIC WORK n Wiring connection for flow selector unit A wired remote controller is necessary for this function. This function cannot be operate with a wireless remote controller. How to connect the wiring of flow selector unit 35 Connect the power supply wire and the communication wire…

11 APPLICABLE CONTROLS

n Change of lighting time of filter sign Procedure 2 UNIT LOUVER Each time you push button, indoor unit numbers in the control group change cyclically. Select the indoor unit you want to change settings. The fan of the selected unit runs and the louvers start swinging. You can confirm the indoor…

12 TEST RUN

A wired remote controller is necessary for this function. This function cannot be operate with a wireless remote controller. In case of wired remote controller 2, 4 3 n Before test run • Before turning on the power supply, carry out the following procedure. 1) Using 500V-megger, check that…

13 TROUBLESHOOTING

n Check method A wired remote controller is necessary for this function. This function cannot be operate with a wireless remote controller. Procedure 1 n Confirmation and check SET When a trouble occurred in the air conditioner, the check code and the indoor unit No. appear on the display part of…

Wireless remote controller

Operation Timer PRE, DEF. 39 ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ l l l ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ l ¡ ¡ ¡ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ ¤ F01 — — F02 — — F03 — — F04 F04 — F05 F05 — F06 F06 — F07 F07 — F08 F08 — F10 — — F12 F12 — F13 F13 01: Comp. 1 sid 02: Comp. 2…

4. REFRIGERATING CYCLE DIAGRAM

Liquid side Gas side Strainer Capillary tube Air heat exchanger at indoor side Pulse Motor Valve (PMV) Strainer Sensor (TC2) Sensor (TCJ) Fan Sensor (TA) Functional part name M Sensor (TC1) Fan motor Functional outline Pulse Motor Valve PMV (Connector CN082 (6P): Blue) 1) Controls super heat in…

5. CONTROL OUTLINE

5-1. Control Specifications No. Item Outline of specifications 1 When power supply is reset 1) Distinction of outdoor unit When the power supply is reset, the outdoors are distinguished and the control is selected according to the distinguished result. 2) If resetting the power supply during…

Outline of specifications

Remarks 5 Air speed selection 1) Operation with (HH), (H), (L) or [AUTO] mode is carried out by the command from the remote controller. For the wireless remote controller type, (HH), (H+), (H), (L+), (L) or [AUTO] operation is carried out. 2) When the air speed mode [AUTO] is selected, the air speed…

Outline of specifications

Remarks 8 Recov ery control for The indoor unit which is under STOP/Thermo-OFF cooling oil status or which operates in [FAN] mode performs the (Refrigerant) following controls when it receiv ed the cooling oil (Refrigerant) recov ery signal from the outdoor unit. 1) Opens PMV of the indoor unit with…

Outline of specifications

Remarks 14 Display of OPERATION [ READY] [ PRE-HEAT] <OPERATION READY> Displayed on the remote controller 1) When the following check codes are indicated • Open phase of power supply wiring [P05] was detected. • There is an indoor unit that detected the indoor overflow [P10]. • There is an indoor…

Louver control Outline of specifications Remarks 1) Louver position setup (Wired type) • The louver position can be set up in the following operation range. In cooling/dry operation In heating/fan operation • In group operation, the louver positions can be set up collectively or individually. 2)…

Outline of specifications

18 COMFORT SLEEP operation (Wireless remote controller specific operations) When you push the COMFORT SLEEP button during cooling, heating or A operation, the air conditioner will start the following operation. The fan speed display will indicate AUTO and low speed will be used. Remarks • [ ]…

Outline of specifications

20 QUIET operation (Wireless remote controller specific operation) When you push the QUIET button during cooling, heating, fan only or A operation, the air conditioner will start the following operation. • The fan speed display will indicate AUTO and low speed will be used. 21 SLEEP operation…

6. APPLIED CONTROL

6-1. Indoor Unit 6-1-1. Setup of Selecting Function in Indoor Unit (Be Sure to Execute Setup by a Wired Remote Controller) <Procedure> Execute the setup operation while the unit stops. TEMP. FILTER RESET TEST ON / OFF TIMER SET FAN MODE TIME SAVE VENT SWING/FIX UNIT LOUVER SET CL Push SET CL 4 TEST…

Table: Function selecting item numbers (DN)

(Items necessary to perform the applied control at the local site are described.) DN Item Description 01 Filter display delay timer 0000 : None 0002 : 2500H 0004 : 10000H 02 Dirty state of filter 0000 : Standard 0001 : High degree of dirt (Half of standard time) 0000 : Standard 03 Central control…

TYPE

Indoor unit capacity Item code [10] Item code [11] Setup data Type Abbreviated Model name Setup data Model 0008 High Wall MMK-AP XXX H 0001 007 0003 009 0005 012 0007 015 0009 018 0011 024 6-1-2. Applied Control in Indoor Unit n Remote location ON/OFF control box (TCB-IFCB-4E2) [Wiring and setup] •…

n Ventilating fan control from remote controller

[Function] • The start/stop operation can be operated from the wired remote controller when air to air heat exchanger or ventilating fan is installed in the system. • The fan can be operated even if the indoor unit is not operating. • Use a fan which can receive the no-voltage A contact as an…

n Leaving-ON prevention control

[Function] • This function controls the indoor units individually. It is connected with cable to the control P.C. board of the indoor unit. • In a group control, it is connected with cable to the indoor unit (Control P.C. board), and the item code 2E is set to the connected indoor unit. • It is used…

Wall-Type P.C. Board Optional Switch/Connector Specifications

Function Connector No. Terminator resistor provided/Not provided Pin No. Specifications Bit 1 OFF: No terminator resistor, ON: Terminator resistor provided Setup at shipment OFF: No terminator resistor. Only 1 unit is ON during central control by custom only. Bit 2 OFF: Remote controller A ON…

7. TROUBLESHOOTING

7-1. Troubleshooting Summary 1. Before troubleshooting 1) Applied models All Super Module Multi-system type models (Indoor unit: MMX-APXXX, Outdoor unit: MMY-MAPXXX) 2) Required tools / measuring devices • Screwdrivers (Philips, Minus), spanner, radio pinchers, nipper, push pin for reset switch…

7-2. Check Method

On the remote controller (Main remote controller, Central control remote controller) and the interface P.C. board of the outdoor unit, a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P.C. board) to display the operation is provided. Therefore the operation…

remote

Wireless remote controller

Check code Outdoor 7-segment display Main remote controller display AI-NET central control display Auxiliary code ¤ l l l ¤ ¤ ¤ ¤ ¤ ¤ l l l 1A — — 11 P03 P03 — 1E P04 P04 01: Comp. 1 side 02: Comp. 2 side P05 P05 01: Phase-missing detection 02: Phase order error AF P07 P07 01: Comp. 1 side 02: Comp.…

7-3. Troubleshooting by Check Display on Remote Controller

7-3-1. In Case of Main Remote Controller (RBC-AMT32E) 1. Confirmation and check When a trouble occurred on the air conditioner, the check code and the indoor unit No. are displayed on the display section of the remote controller. The check code is displayed while the air conditioner operates. If the…

7-3-2. In Case of TCC-LINK Central Control Remote Controller (TCB-SC642TLE2)

ZONE ALL ZONE GROUP CODE No. 1234 SET DATA SETTING R.C. UNIT No. TEST No. GROUP SELECT ZONE CL SET 1. Confirmation and check When a trouble occurred on the air conditioner, the check code and the indoor unit No. are displayed on the display section of the remote controller. The check code is…

7-4. Check Code and Check Position Displayed on the Remote Controller and Outdoor Unit

(7-Segment Display of Interface) Check code Main Outdoor 7-segment display remote controller Check code Sub-code Detected AI-NET position central control remote controller Check code name Status Error detection condition Check item (position) — — — Remote controller Communication error between…

Outdoor 7-segment display

remote controller Check code Sub-code E12 E12 E15 E15 E16 E16 01: Indoor/outdoor communication 02: Between outdoors communication Detected AI-NET position central control remote controller Check code name Status Error detection condition Check item (position) 42 I/F Automatic address start error All…

Outdoor 7-segment display

remote controller Check code Sub-code E25 E25 E26 E26 E28 E28 — Detected AI-NET position central control remote controller Check code name Status Error detection condition Check item (position) 15 I/F Duplicated outdoor follower address setup All stop Outdoor addresses manually set up Note) are…

Outdoor 7-segment display

remote controller Check code Sub-code Detected AI-NET position central control remote controller Check code name Status Error detection condition Check item (position) F07 — 18 I/F TL sensor error All stop • Resistance value of sensor is infinite or zero (Open/Short). • Check connection of TL sensor…

Outdoor 7-segment display

remote controller Check code Sub-code Detected AI-NET position central control remote controller Check code name Status Error detection condition Check item (position) 65 H02 H02 01: Compressor 1 side 02: Compressor 2 side 1d IPDU Compressor error (lock) MG-SW error OCR operation All stop…

Outdoor 7-segment display

remote Sub-code controller Check code H08 H08 66 H14 H14 H16 H16 01: TK1 sensor error 02: TK2 sensor error 03: TK3 sensor error 04: TK4 sensor error — 01: TK1 oil circuit system error 02: TK2 oil circuit system error 03: TK3 oil circuit system error 04: TK4 oil circuit system error Detected AI-NET…

Outdoor 7-segment display

remote controller Check code Sub-code Detected AI-NET position central control remote controller Check code name Status Error detection condition Check item (position) 67 L03 — — 96 Indoor Duplicated indoor center units Corresponding unit only stops. There are multiple center units in a group. •…

Outdoor 7-segment display

remote controller Check code Sub-code L30 L30 — L31 P01 Detected indoor address Detected AI-NET position central control remote controller Check code name Status Error detection condition Check item (position) Interlock in indoor unit from outside Corresponding unit only stops. • Outside error input…

Outdoor 7-segment display

remote controller Check code Sub-code Detected AI-NET position central control remote controller Check code name Status Error detection condition Check item (position) P07 P07 01: Compressor 1 side 02: Compressor 2 side 1C IPDU I/F Heat sink overheat error All stop IGBT built-in temp sensor (TH) was…

Outdoor 7-segment display

remote controller Check code Sub-code Detected AI-NET position central control remote controller Check code name Status Error detection condition Check item (position) 70 P20 P20 — 22 I/F High-pressure protective operation All stop Pd sensor detected 3.6MPa or more. • Check Pd pressure sensor error.…

Outdoor 7-segment display

remote controller Check code Sub-code Detected AI-NET position central control remote controller Check code name Status Error detection condition Check item (position) P26 P26 01: Compressor 1 side 02: Compressor 2 side 14 IPDU G-Tr short-circuit protection error All stop Instantaneous over-current…

Error detected by TCC-LINK central control device

Check code Display on Outdoor 7-segment display central control device Check code Sub-code AI-NET central control remote controller Detected position Check code name TCC-LINK C05 — — C06 — — C12 — — P30 Status Error detection condition TCC-LINK central control device transmission error Operation…

7-4-1. Cautions When Servicing for Compressor

1. Removing wires of both compressors check output of the inverter as described below. 7-4-2. How to Check Inverter Output 1. Turn off the power supply. 2. Remove the compressor lead cables from the compressors. (Be sure to remove lead cables of both compressors.) 3. Turn on the power supply and…

7-5. Diagnosis Procedure for Each Check Code

Check code Check code name [E01] / [–] Communication error between indoor and remote controller (Detected at remote controller side) (Current code / AI-NET) Is the inter-unit cable of remote controllers (A/B) normal? Cause of operation 1. Remote controller inter-unit cable error 2. Indoor power…

Cause of operation

[E02] / [–] Remote controller sending error Signal could not be sent to indoor unit. Check the communication wire of the remote controller. (Current code / AI-NET) ∗ It is not displayed on 7-segment display of the central control controller. Is communication cabling between remote controller and…

Cause of operation

[E04] / [04] Indoor/Outdoor communication circuit error (Detected at indoor side) 1. Power of outdoor unit was firstly turned on. 2. Connection error of communication line between indoor and outdoor 3. End terminal resistance setup error on communication between indoor and outdoor 4. Address setup…

Cause of operation

[E06] / [04] Decreased number of indoor units 1. Communication lines (U1, U2) connection error between indoor and outdoor 2. Connector connection error of communication for indoor P.C. board 3. Connector connection error of communication for outdoor I/F board 4. Power supply of indoor unit (Is power…

Cause of operation

[E07] / [–] Indoor/Outdoor communication circuit error (Detected at outdoor side) 1. Indoor/outdoor communication end terminal resistance setup error 2. Indoor/outdoor communication connection error (Current code / AI-NET) Is setup of end terminal resistance of outdoor unit normal? NO YES Is…

Cause of operation

[E08] / [96] Duplicated indoor addresses (Current code / AI-NET) 1. Indoor addresses are duplicated. 2. Switch setup error of wall type P.C. board Sub-code: Duplicated indoor address Using a main remote controller (RBC-AMT32E), check the setup item codes (DN code) 12, 13, and 14. When there is no…

Cause of operation

[E12] / [42] Automatic address start error 1. When indoor automatic address started, other refrigerant circuit system was setting automatic address. 2. When outdoor automatic address started, the indoor automatic address was being set. (Sub-code: 02) (Current code / AI-NET) Sub-code: 01…

Cause of operation

[E16] / [89] Connected indoor units capacity over 1. There are 48 or more connected indoor units. 2. Capacity over of total connected indoor units. 3. Incorrect setup of indoor/outdoor capacity (Current code / AI-NET) Sub-code: 00 : Capacity over 49 to 64 of connected units YES Perform setup of no…

Cause of operation

[E18] / [97/99] Communication error between indoor header and follower 1. Regular communication between indoor header and follower is unavailable. 2. Switch setup error of wall type P.C. board (Current code / AI-NET) Are remote controller inter-unit cables (A/B) normal? NO Correct remote controller…

Cause of operation

[E19] / [96] Header outdoor units quantity error 1. Misconnection of inter-unit cable between indoor and outdoor 2. Outdoor I/F P.C. board error (Current code / AI-NET) Sub-code: 00: No header unit 02: Two or more header units Are not communication lines (U1, U2) between indoor and outdoor connected…

Cause of operation

[E23] / [15] Communication sending error between outdoor units 1. Inter-unit cable connection error between outdoor units 2. Communication connector connection error between outdoor units, I/F P.C. board error 3. End terminal resistance setup error between outdoor units (Current code / AI-NET) Is…

[E25] / [15]

Duplicated follower outdoor address setup (Current code / AI-NET) Cause of operation Addresses are duplicated by manual setup of outdoor address Do not set up outdoor address manually. Check code Check code name Cause of operation [E26] / [15] Decrease of connected outdoor units 1. Outdoor unit…

[E28] / [d2]

Follower outdoor unit error Cause of operation Follower outdoor error (Current code / AI-NET) Sub-code: Detected outdoor unit No. An error occurred on the follower unit. Check the check code of follower unit on 7-segment display on I/F P.C. board of follower unit, and then check according to…

[F01] / [0F]

Indoor TCJ sensor error Cause of operation TCJ sensor Open/Short (Current code / AI-NET) Is TCJ sensor connector (CN102: Yellow) on indoor P.C. board normally connected? NO Correct connection of connector. YES NO Are characteristics of TCJ sensor resistance value normal? YES Replace TCJ sensor. *…

[F03] / [93]

Indoor TC1 sensor error Cause of operation TC1 sensor Open/Short (Current code / AI-NET) Is TC1 sensor connector (CN100: Brown) on indoor P.C. board normally connected? NO Correct connection of connector. YES Are characteristics of TC1 sensor resistance value normal? YES NO Replace TC1 sensor. ∗…

[F07] / [18]

TL sensor error Cause of operation TL sensor Open/Short (Current code / AI-NET) This error code means detection of Open/Short of TL sensor. Check disconnection of circuit for connection of connector (TL sensor: CN521, White) and characteristics of sensor resistance value. (Refer to Outdoor unit…

Cause of operation

[F13] / [43] TH sensor error IGBT built-in sensor error in A3-IPDU (Current code / AI-NET) Sub-code: 01: Compressor 1 side 02: Compressor 2 side This error code means IGBT built-in temperature sensor error. Check connection of connectors CN06 on IPDU P.C. board and CN600 on I/F P.C. board. If sensor…

Cause of operation

[F16] / [43] Outdoor pressure sensor miscabling (Pd, Ps) 1. High-pressure Pd sensor and low-pressure sensor Ps are exchanged. 2. Output voltage of each sensor is zero. (Current code / AI-NET) Are connection of Pd sensor and Ps sensor connectors correct? NO Correct connection of connectors. Pd…

Cause of operation

[F23] / [43] Ps sensor error Output voltage error of Ps sensor (Current code / AI-NET) Is connection of Ps sensor connector correct? YES Are output voltage characteristics of Ps sensor normal? YES Is there no leakage from SV4 valve? NO Correct connection of connector. Connector: CN500, White NO…

Cause of operation

[F29] / [12] Indoor other error Indoor P.C. board error EEROM error (Current code / AI-NET) This error is detected during operation of air conditioner of IC10 non-volatile memory (EEPROM) on indoor unit P.C. board. Replace service P.C. board. ∗ If EEPROM was not inserted when power was turned on or…

[H01] / [1F]

Compressor breakdown (Current code / AI-NET) Cause of operation 1. Outdoor unit power line error 2. Compressor circuit system error 3. Compressor error 4. Cause of abnormal overload operation 5. IPDU P.C. board error Sub-code: 01: Compressor 1 side 02: Compressor 2 side Is power voltage of outdoor…

Cause of operation

[H02] / [1d] Compressor error (Lock) 1. Outdoor unit power line error 2. Compressor circuit system error 3. Compressor error 4. Refrigerant stagnation in compressor shell 5. IPDU P.C. board error (Current code / AI-NET) Sub-code: 01: Compressor 1 side 02: Compressor 2 side NO Is power voltage of…

Cause of operation

[H03] / [17] Current detective circuit system error 1. Cabling or connector connection error on IPDU P.C. board 2. IPDU P.C. board error (Current code / AI-NET) Sub-code: 01: Compressor 1 side 02: Compressor 2 side Wiring or connector connection on IPDU P.C. board normal? NO Correct connector…

Cause of operation

[H04] / [44] Compressor 1 case thermo operation 1. Case thermo circuit error 2. I/F P.C. board error 3. Service valve closed 4. Outdoor PMV clogging 5. SV4 valve leak, Coil misinstallation 6. 4-way valve error 7. Compressor error 8. Refrigerant shortage (Current code / AI-NET) [H14] / [44]…

Cause of operation

[H06] / [20] Low-pressure protective operation 1. Service valve close 2. Ps sensor error 3. SV2, SV4 circuit error 4. Miscabling of communication between indoor and outdoor 5. Indoor/outdoor fan and condenser error 6. Indoor/outdoor PMV clogging 7. Indoor/outdoor heat exchanger clogging 8.…

Cause of operation

[H07] / [d7] Oil level down detection protection 1. Valves of balance pipes closed. 2. Miscabling or misinstallation of TK1 to TK4 sensors 3. TK1 to TK4 sensor error 4. Gas leak or oil leak of all outdoor units 5. Refrigerant stagnation of compressor case 6. SV3A, 3B, 3D, 3C, 3E valve error 7.…

In some cases, it may be difficult to check the leakage of clogging in the following condition of refrigerant stagnation in low ambient temperature condition. In this case, take a longer operating time prior to check. (Criterion: Discharge temperature of TD1 and TD2 are 60°C or higher) (*1) a)…

(*3) Check for solenoid valve of outdoor unit (For multiple outdoor unit system)

a) Clogging check for SV3A valve • While outdoor unit is operating, set up SW01/02/03 = [2] [1] [3] to 7-segment display [Hr] [ 2], and push SW04 for 2 seconds or more. • Set up SW02 = [4], and turn on SV3A valve. (7-segment display [Hr] [ 3A]) • If temperature is low at secondary side of the valve…

[H08] / [d4]

Oil level detective temperature sensor error (Current code / AI-NET) Cause of operation TK1 to TK4 sensor Open/Short Sub-code: 01: TK1 sensor error 02: TK2 sensor error 03: TK3 sensor error 04: TK4 sensor error The detected error is an oil level detective temperature sensor error. Check…

Cause of operation

[H16] / [d7] Oil level detective circuit system error (Sub-code: 02) 1. Detachment of TK2 sensor, miscabling, characteristics error of resistance value 2. Oil-equalization circuit error (Check valve, capillary clogging, strainer clogging) 3. Refrigerant stagnation in compressor shell (Current code /…

[H16] / [d7]

TK3 temperature detective circuit error (Sub-code: 03) (Current code / AI-NET) Is not TK3 sensor come off? Cause of operation 1. Detachment of TK3 sensor, miscabling, characteristics error of resistance value 2. Error of SV3C valve circuit periphery (Check capillary clogging, strainer clogging) 3.…

Cause of operation

[H16] / [d7] TK4 temperature detective circuit error (Sub-code: 04) 1. Detachment of TK4 sensor, miscabling, characteristics error of resistance value 2. Check clogging and malfunction of SV3E valve circuit. 3. Oil-equalization circuit error (Check capillary clogging, strainer clogging) 4.…

Cause of operation

[L03] / [96] Duplicated indoor header units There were two or more indoor header units in some remote controller group control. (Current code / AI-NET) 1) Check the connection changing of the remote controller after the connection has been changed. 2) If the group configuration and address are…

[L06] / [96]

Duplicated indoor units with priority (Displayed on the indoor unit other than one with priority and on the outdoor unit) (Current code / AI-NET) Cause of operation Two or more indoor units with priority are duplicated. Sub-code: No. of indoor units with priority When indoor unit with priority is…

[L08] / [99]∗

Indoor group / address unset Cause of operation Indoor address unset (Current code / AI-NET) Are powers of all the indoor units turned on? NO Turn on the power of indoor units. YES Disconnect connectors between [U1, U2] and [U3, U4]. Turn on the power of outdoor unit again. Clear addresses. (Refer…

[L10] / [88]

Outdoor capacity unset (Current code / AI-NET) Cause of operation On the outdoor IF P.C. board for service, the model selecting jumper has not been set up so as to match with the model. I/F P.C. board A’ssy service for the outdoor unit is common to this series. A setup for model selection different…

Cause of operation

[L29] / [CF] IPDU quantity error 1. Incorrect model setup in service for I/F P.C. board 2. Communication error between IPDU, fan IPDU and I/F 3. IPDU, fan IPDU, I/F P.C. board error (Current code / AI-NET) Sub-code: 01: IPDU1 error 02: IPDU2 error 03: IPDU1, 2 error 04: Fan IPDU error 05: IPDU1, fan…

[L30] / [b6]

Interlock in indoor unit from outside (Current code / AI-NET) Is outside device connected to connector CN80? Cause of operation Outside error was input. NO Check indoor P.C. board. Failure → Replace NO Check outside device. Failure → Replace YES Does outside device correctly operate? YES Check cause…

[P03] / [1E]

Discharge temp TD1 error (Current code / AI-NET) Are service valve of gas and liquid sides fully opened? Cause of operation 1. Service valve of outdoor unit closed 2. Outdoor PMV error 3. TD sensor error 4. Refrigerant shortage, clogging of refrigerant circuit system 5. 4-way valve error 6. SV4…

Cause of operation

[P04] / [21] Actuation of high-pressure SW 1. High-pressure SW error 2. Service valve closed 3. Pd sensor error 4. Indoor/outdoor fan error 5. Indoor/outdoor PMV choke 6. Indoor/outdoor heat exchanger clogging, air short circuit 7. SV2 circuit error 8. SV4 circuit error 9. SV5 circuit error 10.…

A

C NO ( Is SV4 circuit normal? Repair SV4 circuit. Coil error, clogging, disconnection of wiring, etc. ) YES Refrigerant overcharge, clogging,pipe breakage, abnormal overload condition Heating operation YES Does heating indoor fan normally operate? NO Is indoor PMV normal? NO YES Is connector…

[P05] / [AF]

Open phase, negative phase (Current code / AI-NET) Cause of operation 1. Power supply open phase 2. Power supply negative phase • Check the phase power line of outdoor unit. • Check error of outdoor I/F P.C. board. • Check there is no looseness, etc of terminal. Check code Check code name [P07] /…

Cause of operation

[P12] / [11] Indoor fan motor error (Current code / AI-NET) 1. Fan motor connector error 2. Fan motor error 3. Indoor P.C. board error 4. Cross-flow fan bearing error Turn off breaker once. Turn on breaker after approx. 10 seconds. Does fan stop under condition of operation stop? NO YES Is voltage…

P.C. board

Indoor fan starts rotating by connecting plug socket. CN210 [P.C. board fan motor output voltage (DC) check] 6 Blue 5 Yellow Measure voltage between 3 pin (GND (Minus): Black) and 5 pin (V line (Plus): Yellow) of connector CN210. Yellow 4 White Black 3 Black 2 — Above DC1.0V Below DV1.0V Indoor main…

Cause of operation

[P15] / [AE] Gas leak detection TS condition (Sub-code: 01) 1. Outdoor unit service valve closed 2. Outdoor PMV error 3. TS1 sensor error 4. Refrigerant shortage, clogging refrigerant circuit 5. 4-way valve error 6. SV4 circuit error (Current code / AI-NET) Are service valves at gas and liquid side…

Cause of operation

[P15] / [AE] Gas leak detection TD condition (Sub-code: 02) 1. Outdoor unit service valve closed 2. Outdoor PMV error 3. TD sensor error 4. SV4 circuit error 5. Refrigerant shortage, clogging refrigerant circuit (Current code / AI-NET) Are service valves of gas and liquid sides fully opened? NO Open…

Cause of operation

[P17] / [bb] Discharge temp TD2 error 1. Outdoor unit service valve closed 2. Outdoor PMV error 3. TD sensor error 4. Refrigerant shortage, clogging of refrigerant circuit 5. 4-way valve error 6. SV4 circuit leakage, misinstallation (Current code / AI-NET) Are service valves of gas and liquid sides…

Cause of operation

[P19] / [08] 4-way valve operation error (Current code / AI-NET) 1. 4-way valve error 2. TS1 sensor/TE1 sensor error 3. Pd sensor/Ps sensor error 4. TE sensor/TL sensor misconnection Sub-code: Detected outdoor unit No. NO Is 4-way valve coil connector connected? Correct connector connection. (4-way…

Cause of operation

[P20] / [22] High-pressure protective operation 1. Pd sensor error 2. Service valve closed. 3. Indoor/outdoor fan error 4. Indoor/outdoor PMV clogging 5. Indoor/outdoor heat exchanger clogging 6. SV2 circuit error 7. SV4 circuit error 8. SV5 circuit error 9. Outdoor I/F P.C. board error 10.…

C

Heating operation Is connector connection of indoor heat exchanger fan or fan motor normal? NO Does heating indoor fan normally operate? YES NO YES NO Is indoor PMV normal? Repair faulty parts. YES Is connector connection coil normal? NO Are characteristics of sensor TC2 and TCJ resistance normal?…

[P22] / [1A]

Outdoor fan IPDU error (Current code / AI-NET) Sub-code: 0 ∗ : IGBT short circuit 3 ∗ : Motor lock error C ∗ : TH sensor error (Heat sink overheat) E ∗ : Vdc error Are cable connector connection on fan IPDU and power P.C. board A’ssy normal? Cause of operation 1. Fan lock 2. Fan IPDU P.C. board…

[P26] / [14]

G-Tr short-circuit protection error (Current code / AI-NET) Cause of operation 1. Outdoor unit power error 2. IPDU error/Cable connection error 3. Compressor error 4. IPDU P.C. board error Sub-code: 01: Compressor 1 side 02: Compressor 2 side NO Is power voltage of outdoor unit normal? Correct power…

[P29] / [16]

Compressor position detective circuit error (Current code / AI-NET) Cause of operation 1. Cable/connector connection error 2. Compressor error 3. IPDU P.C. board error Sub-code: 01: Compressor 1 side 02: Compressor 2 side Are connector connection and wiring normal? NO Check and correct circuit and…

AI-NET communication line error Cause of operation AI-NET communication line error (Current code / AI-NET) Are AI-NET X and Y communication lines normal? NO Correct communication line. YES Are connections of CN01, CN02, and CN03 connectors on network adaptor P.C. board (MCC-1401) and CN309 and CN41…

7-5-1. Indoor Unit

8. CONFIGURATION OF CONTROL CIRCUIT

8-1. Indoor Controller Block Diagram 8-1-1. Case of Main (Sub) Remote Controller Connected Main (Sub) master remote controller (Up to 2 sets) Display part LCD Weekly timer LCD driver Function setup Key switch CPU CN2 Function setup CPU CN1 Display part LED Display part LCD DC5V Key switch Power…

8-1-2. Case of Wireless Remote Controller Kit Connected

Indoor unit #1 A B A B A B Main P.C. board (MCC-1510) DC20V Central control remote controller (Option) *1 Remote controller communication circuit U3 Central control communication circuit U4 Sensor display P.C. board (MCC-5044) Sensor part EEPROM TA sensor DC5V TC sensor CPU LED Driver Driver Same as…

9. HOW TO REPLACE 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 main power supply switch or breakers are not turned off. • After the repairs have been completed (after the front panel and cabinet…

9-1. Indoor Unit

No. Part name Procedures Remarks Q Front panel 1) Stop operation of the air conditioner and turn off its main power supply. 2) Open the air inlet grille, push the arm toward the outside, and remove the grille. 3) Push “PUSH” part under the front panel and remove hooks of the front panel from the…

Procedures

R Electric parts assembly 1) Perform work of item Q . 2) Take off PMV cover fixing screws (2 pcs.) and then remove PMV cover. 3) Take off drain guide fixing screws (2 pcs.) and then remove the drain guide. 4) Take off earth screw (1 pc.) fixed to the end plate. 5) Pull out TC1, TC2 and TCJ sensors…

Procedures

Remarks S PMV motor <Cautions at work> Using spanners by 17mm and 19mm, remove the PMV motor. <AP0243 to AP0153> Using spanners by 16mm and 19mm, remove the PMV motor. <AP0123 to AP0073> To avoid deformation of the pipes, do not use a monkey wrench. In case that the clearance to the ceiling is 110…

Procedures

U Evaporator (Heat exchanger) 1) Follow to the procedure in the item ‚ . 2) Remove the pipe holder from the rear side of the main unit. 3) Remove 2 fixing screws at the left side of the end plate of the heat exchanger. Remarks 2 screws <AP0243 to AP0153> 4) Remove 2 fixing screws on the heat…

V

Part name Bearing Procedures Remarks 1) Follow to the procedure in the item T . 2) Remove the 2 screws used to secure the bearing base. 3) Remove the bearing base. 2 screws Bearing base <Caution at assembling> • If the bearing is out from the housing, push it into the specified position and then…

Procedures

Remarks W Fan motor 1) Follow to the procedure till item T . 2) Loosen the set screw of the cross flow fan. 3) Remove 2 fixing screws of the motor cover and them remove the motor cover. 4) Remove 2 more fixing screws of the motor band and remove the motor band. Set screw 2 screws on motor cover 5)…

Procedures

Remarks X Cross flow fan <Caution at reassembling> 1) To incorporate the fan motor, remove the fan motor rubber (at shaft core side), incorporate the motor into the position in the following figure, and then install the fan motor. 5.0mm • Install the cross flow fan so that the right end of the 1st…

Model type P.C. board model Label display on P.C. board MMK-AP ✻✻✻ 3H series MCC-1510 04DD M01 [Requirement when replacing the service indoor P.C. board assembly] In the non-volatile memory (Hereinafter said EEPROM, IC10) installed on the indoor P.C. board before replacement, the type and capacity…

2. Every pushing [Unit, Louver

] button, the indoor unit address in the group are displayed successively. 2 Specify the indoor unit No. to be replaced. 3. Using the set temperature / buttons, the CODE No. (DN) can be moved up and down one by one. 3 4. First change the CODE No. (DN) from to . (Setting of filter sign lighting time)…

C) In case that power of the indoor units cannot be turned in individually. (CASE 2 )

a) Remove all CN41 connectors of the indoor units in the same group except those of the exchanged indoor unit. b) Turn on power of the indoor units and proceed to H3. ∗ After H3 operation has finished, be sure to return the temporarily removed group wire or CN41 connector to the original connection.…

H3 3 Writing of the setup contents to EEPROM

(The contents of EEPROM installed on the service P.C. board have been set up at shipment from the factory.) CL TEST SET 1. Push , and buttons of the remote controller at the same time for 4 seconds or more. 1 (Corresponded with No. in Remote controller as shown below picture) (The UNIT No. is…

CODE No. table (Please record the objective unit data at field)

DN Item Memo At shipment 01 Filter sign lighting time 0001: 150 hour 02 Dirty state of filter 0000: Standard 03 Central control address 0099: Unfixed 06 Heating suction temp shift 0002: +2°C 0C PRE-DEF indication selection 0000: Standard 0d Cooling auto mode existence 0001: No auto mode…

11. EXPLODED VIEWS AND PARTS LIST

11-1. Indoor Unit Model: MMK-AP0073H, MMK-AP0093H, MMK-AP0123H Detail Drawi-ng A A Location No. Part No. Description 43T22312 43T70313 43T20016 43T49010 43T83003 43T46029 43T19333 43T79313 43T66304 43T09439 43T49043 43T39026 43T39022 43T39023 43T80019 43T62031 43T39024 Bearing Ass’y Hose, Drain Fan…

11-2. Indoor Unit

11-3. Indoor Unit

11-4. Indoor Unit

TOSHIBA CARRIER (THAILAND) CO., LTD

144/9 MOO 5, BANGKADI INDUSTRIAL PARK, TIVANON ROAD, TAMBOL BANGKADI, AMPHUR MUANG, PATHUMTHANI 12000, THAILAND.

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