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Fujitsu AR G07LL A Series Service Instruction

Split type room air conditioner slim duct / compact cassette compact wall mounted / floor type inverter multi
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SERVICE
INSTRUCTION
R410A
SPLIT TYPE
ROOM AIR CONDITIONER
Slim Duct / Compact Cassette
Compact Wall Mounted /
Floor type
INVERTER MULTI
Models
Indoor unit
AR*G07LL* A
AR*G09LL* A
AR*G12LL* *
AU*G07LVLA
AU*G09LVLA
AU*G12LVL*
AS*G07LJCA
AS*G09LJCA
AS*G12LJCA
AS*G07LUCA
AS*G09LUCA
AS*G12LUCA
AS*G14LUCA
AG*G09LVCA
AG*G12LVCA
AS*G07LMCA
AS*G09LMCA
AS*G12LMCA
AS*G14LMCA
Outdoor unit
AO*G18LAC2

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Summary of Contents for Fujitsu AR G07LL A Series

  • Page 1 SPLIT TYPE ROOM AIR CONDITIONER Slim Duct / Compact Cassette Compact Wall Mounted / Floor type INVERTER MULTI SERVICE INSTRUCTION Models Indoor unit Outdoor unit AR*G07LL* A AO*G18LAC2 AR*G09LL* A AR*G12LL* * AU*G07LVLA AU*G09LVLA AU*G12LVL* AS*G07LJCA AS*G09LJCA AS*G12LJCA R410A AS*G07LUCA AS*G09LUCA AS*G12LUCA AS*G14LUCA...

  • Page 2: Table Of Contents

    CONTENTS 1. DESCRIPTION OF EACH CONTROL OPERATION 1. CAPACITY CONTROL....................01-01 2. AUTO CHANGEOVER OPERATION................01-01 3. INDOOR FAN CONTROL................... 01-03 4. LOUVER CONTROL....................01-09 5. OUTDOOR FAN CONTROL..................01-13 6. TIMER OPERATION CONTROL................01-14 7. COMPRESSOR CONTROL..................01-17 8. ELECTRONIC EXPANSION VALVE CONTROL............01-18 9.

  • Page 3: Description Of Each Control Operation

    R410A Slim Duct / Compact Cassette Compact Wall Mounted Floor type INVERTER (MULTI ) 1 . DESCRIPTION OF EACH CONTROL OPERATION...

  • Page 4: Capacity Control

    1. CAPACITY CONTROL 1-1 COOLING, HEATING, DRY CAPACITY CONTROL Compressor frequency decides by capacity of an indoor unit, operation number of an indoor unit, set temperature, room temperature and outside temperature. 2. AUTO CHANGEOVER OPERATION When the air conditioner is set to the Auto mode by remote controller, operation starts in the optimum mode from among the Heating, Cooling, Dry and Monitoring mode.
  • Page 5 When Heating was selected at , the same operation as HEATING OPERATION of page 01-02 is performed. When the compressor was stopped for 6 consecutive minutes by the temperature control function after the Cooling(Auto:Dry) or Heating mode was selected at above, operation is switched to Monitoring and the operation mode is selected again.

  • Page 6: Indoor Fan Control

    3. INDOOR FAN CONTROL 1. Fan speed (Table 2 : Indoor fan speed table) AS*G07LJCA AS*G09LJCA (rpm) (rpm) Operation mode Fan Speed Operation mode Air flow mode Fan Speed Air flow mode Heating Heating 1100 1050 1040 1000 Quiet Quiet Cool Air Prevention Cool Air Prevention S-Lo...
  • Page 7 (rpm) (rpm) AR*G07LL*A (Static pressure:25Pa) AR*G09LL*A (Static pressure:25Pa) Operation mode Fan Speed Air flow mode Operation mode Fan Speed Air flow mode Heating 1160 1260 Heating 1000 1160 1060 Quiet Quiet S-Lo S-Lo 1160 1260 Cooling / Fan Cooling / Fan 1000 1160 1060...
  • Page 8 AS*G14LUCA (rpm) (rpm) AS*G12LUCA Operation mode Fan Speed Operation mode Fan Speed Air flow mode Air flow mode Heating Heating Powerful 1160 Powerful 1230 1110 1180 1110 1180 1030 1080 1010 Quiet Quiet Cool Air Prevention Cool Air Prevention S-Lo S-Lo Cooling / Fan Powerful...
  • Page 9 AS*G07LMCA (rpm) AS*G09LMCA (rpm) Operation mode Fan Speed Operation mode Fan Speed Air flow mode Air flow mode Heating Heating Powerful 1090 Powerful 1140 1050 1090 1000 1040 Quiet Quiet Cool Air Prevention Cool Air Prevention S-Lo S-Lo Cooling / Fan Powerful 1090 Cooling / Fan...
  • Page 10 2. FAN OPERATION The airflow can be switched in 5 steps such as Auto, Quiet, Lo, Me, Hi, while the indoor fan only runs. When Fan mode is set at (Auto), it operates on (Me) Fan Speed. < All models > 3.
  • Page 11 5. HEATING OPERATION (Auto : Heating) Switch the airflow [Auto], and the indoor fan motor will run according to a room temperature, as shown in Fig 5. On the other hand, if switched in [Hi] [Quiet], the indoor motor will run at a constant airflow of [Heat] operation modes Quiet, Lo, Me, Hi, as shown in Table 2.
  • Page 12 < AU*G type > < AG*G type > When Indoor heat exchanger When Indoor heat exchanger temperature rises temperature rises When Indoor heat exchanger When Indoor heat exchanger temperature drops temperature drops 42°C 42°C 37°C 34°C Me+ or setting Me or setting 39°C 39°C FAN mode...

  • Page 13: Louver Control

    4. LOUVER CONTROL For AS*G07/ 09/ 12LJCA Type 1. VERTICAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range will change as follow: (Fig.7 : Virtical Air Direction Range) Cooling / Heating / Dry mode / Fan mode <Compact Wall Mounted Type>...
  • Page 14 For AS*G07/ 09/ 12/ 14LUCA Type 1. VERTICAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range will change as follow: (Fig.8 : Air Direction Range) Types of Air flow Direction Setting: : During Cooling/Dry modes : During Heating The Remote Controller's display does not change.
  • Page 15 For Wall Mounted Type < AS*G07/09/12/14LMCA > 1. VERTICAL LOUVER CONTRO L (Function Range) Each time the button is pressed, the air direction range will change as follow: Fig.9 : Air Direction Range The Remote Controller's display does not change. If you set the angle to position 4.7 for more than 30 minutes in COOL or DRY mode, they automatically return to position 3.
  • Page 16 For AU*G07/ 09/ 12LVLA Type (Function Range) Each time the button is pressed, the air direction range will change as follows: (Fig.9 : Air Direction Range) (Operation Range) Cooling / Heating / Dry / Fan mode : Use the air direction adjustments within the ranges shown above. The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.
  • Page 17 AG*G09/ 12LVCA Type (Function and Operation Range) Each time the button is pressed, the air direction range will change as follows: ( Fig.10 : Air Direction Range) Use the air direction adjustments within the ranges shown above. The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected. Cooling / Dry / Fan mode Horizontal flow Heating mode Downward flow...

  • Page 18: Outdoor Fan Control

    5. OUTDOOR FAN CONTROL 1. Outdoor Fan Motor Following table 3 shows the fan speed of the outdoor unit. ( Table 3 : Fan speed of the outdoor unit ) Cooling Heating AO*G18LAC2 900/ 820/ 700/ 410/ 320/ 250/ 200 rpm 900/ 820/ 700/ 410/ 320/ 250/ 200 rpm It runs at 500rpm for 20 seconds after starting up the outdoor fan.

  • Page 19: Timer Operation Control

    6. TIMER OPEARTION CONTROL 6-1 WIRELESS REMOTE CONTROLLER The table 4 shows the available timer setting based on the product model. ( Table 4 : Timer setting ) ON TIMER / OFF TIMER PROGRAM TIMER SLEEP TIMER *WEEKLY TIMER * For AS*G07/ 09/ 12/ 14LUCA Type 1.
  • Page 20 3. SLEEP TIMER If the sleep is set, the room temperature is monitored and the operation is stopped automatically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time ON. In the cooling operation mode When the sleep timer is set, the setting temperature is increased 1°C.
  • Page 21 6-2 WIRED REMOTE CONTROLLER The Table 5 shows the available timer setting based on the product model. ( Table 5 : Timer setting ) ON TIMER / OFF TIMER WEEKLY TIMER TEMPERATURE SET BACK TIMER ON TIMER / OFF TIMER Same to 6-1 ON / OFF TIMER and shown in those.

  • Page 22: Compressor Control

    7. COMPRESSOR CONTROL 1. OPERATION FREQUENCY RANGE The operation frequency of the compressor is different based on the operation mode as shown in the table 6. (Table 6 : Compressor Operation Frequency Range) Cooling Heating AO*G18LAC2 15rps 85rps 21rps 130rps 2.

  • Page 23: Electronic Expansion Valve Control

    8. ELECTRONIC EXPANSION VALVE CONTROL The most proper opening of the electronic expansion valve is calculated and controlled under the present operating condition based on the Table7. The compressor frequency, the temperatures detected by the discharge temperature sensor and the outdoor temperature sensor. (Table7 : The pulse range of the electronic expansion valve control) Operation mode Pulse range...

  • Page 24: Way Valve Extension Select

    11. 4-WAY VALVE EXTENSION SELECT At the time when the air conditioner is switched from the Cooling mode to Heating mode, the compressor is stopped, and the 4-way valve is switched in 3 minutes later after the compressor stopped. 12. AUTO RESTART When the power was interrupted by a power failure, etc.

  • Page 25: Compressor Preheating

    14. COMPRESSOR PREHEATING When the outdoor heat exchanger temperature is lower than Operation temperature (Refer to Table 10) and the heating operation has been stopped for 3 hours, power is applied to the compressor and the compressor is heated. (By heating the compressor, warm air is quickly discharged when operation is started.) When operation was started, and when the outdoor temperature rises to Release temperature or greater, preheating is over.

  • Page 26: Defrost Operation Control

    18. DEFROST OPERATION CONTROL 1. CONDITION OF STARTING THE DEFROST OPERATION The defrost operation starts when the outdoor heat exchanger temperature sensor detects the temperature lower than the values shown in Table 14-1, 14 -2. 1-1 NORMAL DEFROST (Table 14-1 : Condition of starting defrost operation) Compressor integrating operation :45min and over Compressor integrating...
  • Page 27 3. Defrost Flow Chart The defrosting shall proceed by the integrating operation time, outdoor temperature and outdoor heat exchanger temperature as follows. Heating operation start : Compressor ON (Not defrosted for 6 or 10 minutes) Normal defrost Integrating defrost Outside air temp. Outside air temp.

  • Page 28: Off Defrost Operation Control

    19. OFF DEFROST OPEARTION CONTROL When operation stops in the [Heating operation] mode, if frost is adhered to the outdoor unit heat exchanger, the defrost operation will proceed automatically. In this time, if indoor unit operation lamp flashes slowly (7 sec ON / 2 sec OFF), the outdoor unit will allow the heat exchanger to defrost, and then stop.

  • Page 29: Various Protections

    17. VARIOUS PROTECTIONS 1. DISCHARGE GAS TEMPERATURE OVER RISE PREVENTION CONTROL The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas temperature. When the discharge temperature becomes higher than ,the compressor frequency is decreased 20rps, and it continues to decrease the frequency for 20rps every 120 seconds until the temperature becomes lower than When the discharge temperature becomes lower than ,the control of the compressor...
  • Page 30 4. COOLING PRESSURE OVER RISE PROTECTION When the outdoor unit heat exchange sensor temperature rises to 67.0°C or greater, the compressor is stopped and error display is indicated. 5. HIGH TEMPERATURE RELEASE CONTROL ( HEATING MODE ) On heating mode, the compressor frequency is controlled as following based on the detection value of the indoor heat exchanger temperature sensor.

  • Page 31: Trouble Shooting

    R410A Slim Duct / Compact Cassette Compact Wall Mounted Floor type INVERTER (MULTI ) 2 . TROUBLE SHOOTING...

  • Page 32: Error Display

    2-1 ERROR DISPLAY 2-1-1 INDOOR UNIT AND WIRED REMOTE CONTROLLER DISPLAY Please refer the flashing pattern as follows. The Operation, Timer, Economy lamps operate as follows according to the error contents. Indoor Unit Display Wired Remote Trouble Controller Error Contents shooting Operation Timer...

  • Page 33: Wired Remote Controller Display

    2-1-2 WIRED REMOTE CONTROLLER DISPLAY 1. SELF - DIAGNOSIS When " Er " in Temperature Display is displayed, inspection of the air conditioning system is necessary. Please consult authorized service personnel. Unit number (usually 0) Error code SU MOTU WETH FR SA ex.

  • Page 34: Trouble Shooting With Error Code

    2-2 TROUBLE SHOOTING WITH ERROR CODE Trouble shooting 1 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Serial Communication Error (Serial Reverse Transfer Error) Detective Actuators: Detective details: When the indoor unit cannot receive the serial signal from Outdoor unit Outdoor unit Main PCB more than 2minutes after power ON, or the indoor unit cannot receive Outdoor unit Fan motor...
  • Page 35 Trouble shooting 2 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Serial Communication Error (Serial Forward Transfer Error) Detective Actuators: Detective details: When the outdoor unit cannot properly receive the serial signal from Indoor unit Controller PCB indoor unit for 10 seconds or more.
  • Page 36 Trouble shooting 3 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Wired Remote Controller Communication Error Detective Actuators: Detective details: Indoor unit Controller PCB When the indoor unit cannot properly receive the signal from Wired Remote Controller (Option) Wired Remote Controller for 1 minute or more.
  • Page 37 Trouble shooting 4 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor Unit Capacity Error Detective Actuators: Detective details: The total capacity of the indoor unit if it is install beyond. All indoor unit Forecast of Cause : 1.
  • Page 38 Trouble shooting 5 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor Unit Model Information Error EEPROM Access Abnormal Detective details: Detective Actuators: When power is on and there is some below case. Indoor unit Controller PCB When model information of EEPROM is incorrect.
  • Page 39 Indicate or Display: Trouble shooting 6 INDOOR UNIT Error Method: Refer to error code table. Manual Auto Switch Error Detective Actuators: Detective details: Indoor Unit Controller PCB When the Manual Auto Switch becomes ON for consecutive 60 or Indicator PCB more seconds.
  • Page 40 Trouble shooting 7 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor Room Thermistor Error Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit Room temperature thermistor is open or short is detected always. Room temperature Thermistor Forecast of Cause : 1.
  • Page 41 Trouble shooting 8 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor Heat Ex. Thermistor Error Detective Actuators: Detective details: Indoor Unit Controller PCB Heat Exchanger (MID) thermistor is open or short is detected always. Heat Exchanger (MID) Thermistor Forecast of Cause : 1.
  • Page 42 Trouble shooting 9 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor Unit Fan Motor Error Detective Actuators: Detective details: When the condition that actual frequency of Indoor Fan is Indoor unit Controller PCB below 1/3 of target frequency is continued more than 56 seconds. Indoor unit fan motor Forecast of Cause: 1.
  • Page 43 Indicate or Display: Trouble shooting 10 INDOOR UNIT Error Method: Refer to error code table. Drain pump Error Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit When Float switch is ON for more than 3 minutes. Float Switch Forecast of Cause : 1. Float switch failure 2. Shorted connector/wire 3. Controller PCB failure 4.
  • Page 44 Trouble shooting 11 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Damper(OPEN/CLOSE) Detection Limit Switch Error Detective details: Detective Actuators: When limit switch were not able to detect the close though the damper close. Indoor unit Controller PCB Circuit (Upper air flow) Limit switch When limit switch were not able to detect the open though the damper open.
  • Page 45 Trouble shooting 12 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Damper(OPEN/CLOSE) Simultaneous Detection Limit Switch Error Detective Actuators: Detective details: When the limit switch detects open and close at the simultaneous. Indoor unit Controller PCB Circuit Limit switch Forecast of Cause : 1.
  • Page 46 Trouble shooting 13 Indicate or Display: INDOOR UNIT Error Method: INDOOR UNIT Refer to error code table. Intake grille error Detective Actuators: Detective details: Indoor unit Controller PCB When the Micro switch is detected open while running the compressor. Micro switch Forecast of Cause : 1.
  • Page 47 Trouble shooting 14 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Outdoor Unit Model Information Error Detective details: Detective Actuators: When power is on and there is some below case. Outdoor unit Main PCB When model information of EEPROM is incorrect. When the access to EEPROM failed.
  • Page 48 Trouble shooting 15 Indicate or Display: OUTDOOR UNIT Error Method: INDOOR UNIT Refer to error code table. PFC circuit Error Detective Actuators: Detective details: When inverter output DC voltage is higher than 415V for over 3 seconds, Outdoor unit Main PCB the compressor stops.
  • Page 49 Trouble shooting 16 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. IPM Error Detective details: Detective Actuators: When the signal from FO terminal of IPM in Main PCB is "L"(=0V) Outdoor unit Main PCB while the compressor stops. Forecast of Cause : 1.
  • Page 50 Indicate or Display: Trouble shooting 17 OUTDOOR UNIT Error Method: Refer to error code table. Outdoor Discharge Thermistor Error Detective details: Detective Actuators: When Discharge Pipe Temperature Thermistor open or short-circuit Outdoor Unit Main PCB Circuit is detected at power ON or while running the compressor. Discharge Pipe Temperature Thermistor Forecast of Cause : 1.
  • Page 51 Indicate or Display: Trouble shooting 18 OUTDOOR UNIT Error Method: Refer to error code table. Compressor Thermistor Error Detective Actuators: Detective details: When Compressor Temperature Thermistor open or short-circuit is Outdoor Unit Main PCB Circuit detected at power ON or while running the compressor. Compressor Temperature Thermistor Forecast of Cause : 1.
  • Page 52 Indicate or Display: Trouble shooting 19 OUTDOOR UNIT Error Method: Refer to error code table. Heat Ex. Thermistor Error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When Heat Exchanger Temperature Thermistor open or short-circuit is Heat Exchanger Temperature Thermistor detected at power ON or while running the compressor.
  • Page 53 Indicate or Display: Trouble shooting 20 OUTDOOR UNIT Error Method: Refer to error code table. Outdoor Thermistor Error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When Outdoor Temperature Thermistor open or short-circuit is detected at power ON or while running the compressor. Outdoor Temperature Thermistor Forecast of Cause : 1.
  • Page 54 Indicate or Display: Trouble shooting 21 OUTDOOR UNIT Error Method: 2-way valve Thermistor Error Refer to error code table. Detective details: Detective Actuators: When 2-way valve Temperature Thermistor open or short-circuit is Outdoor Unit Main PCB Circuit detected at power ON or while running the compressor. 2-way valve Temperature Thermistor Forecast of Cause : 1.
  • Page 55 Indicate or Display: Trouble shooting 22 OUTDOOR UNIT Error Method: 3-way valve Thermistor Error Refer to error code table. Detective details: Detective Actuators: When 3-way valve Temperature Thermistor open or short-circuit is Outdoor Unit Main PCB Circuit detected at power ON or while running the compressor. 3-way valve Temperature Thermistor Forecast of Cause : 1.
  • Page 56 Indicate or Display: Trouble shooting 23 OUTDOOR UNIT Error Method: Refer to error code table. Heat Sink Thermistor Error Detective details: Detective Actuators: When Heat Sink Temperature Thermistor open or short-circuit is Outdoor Unit Main PCB Circuit detected at power ON or while running the compressor. Heat Sink Temperature Thermistor Forecast of Cause : 1.
  • Page 57 Trouble shooting 24 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Over Current Error Detective details: Detective Actuators: When more than normal operating current to IPM in Main PCB flows, Outdoor unit Main PCB the compressor stops. Compressor After the compressor restarts, if the same operation is repeated within 40sec, the compressor stops again.
  • Page 58 Trouble shooting 25 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Compressor Control Error Detective details: Detective Actuators: While running the compressor, if the detected rotor location is out of Outdoor unit Main PCB phase with actual rotor location more than 105°, Compressor the compressor stops.
  • Page 59 Trouble shooting 26 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Outdoor Unit Fan Motor Error Detective Actuators: Detective details: When outdoor fan rotation speed is less than 100rpm in 20 seconds Outdoor unit Main PCB after fan motor starts, fan motor stops.
  • Page 60 Trouble shooting 27 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. 4-Way Valve Error Detective Actuators: Detective details: When the indoor heat exchanger temperature is compared with Indoor unit Controller PCB the room temperature, and either following condition is detected Heat exchanger temperature thermistor continuously two times, the compressor stops.
  • Page 61 Trouble shooting 28 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Discharge Temp. Error Detective details: Detective Actuators: Outdoor unit Main PCB "Protection stop by "discharge temperature 110°C during Discharge temperature thermistor compressor operation"" generated 2 times within 24 hours. Forecast of Cause : 1.
  • Page 62 Trouble shooting 29 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Compressor Temp. Error Detective details: Detective Actuators: "Protection stop by Compressor temperature thermistor "compressor temperature 110°C during compressor operation"" generated 2 times within 24 hours. Forecast of Cause : 1.

  • Page 63: Trouble Shooting With No Error Code

    2-3 TROUBLE SHOOTING WITH NO ERROR CODE Forecast of Cause: Trouble shooting 30 1. Power Supply failure 2. External cause Indoor Unit - No Power 3. Electrical Components defective Check Point 1 : Check Installation Condition Isn’t the breaker down? Check loose or removed connection cable.
  • Page 64 Forecast of Cause: Trouble shooting 31 1. Power Supply failure 2. External cause Outdoor Unit - No Power 3. Electrical Components defective Check Point 1 : Check Installation Condition Isn’t the breaker down? Check loose or removed connection cable. >>If abnormal condition is found, correct it by referring to Installation Manual or Data &...
  • Page 65 Forecast of Cause: Trouble shooting 32 1. Setting/ Connection failure 2. External cause No Operation (Power is ON) 3. Electrical Component defective Check Point 1 : Check indoor and outdoor installation condition Indoor Unit - Check incorrect wiring between Indoor Unit - Remote Control. Or, check if there is an open cable connection.
  • Page 66 Forecast of Cause: Trouble shooting 33 1. Indoor Unit error 2. Outdoor Unit error No Cooling / No Heating 3. Effect by Surrounding environment 4. Connection Pipe / Connection Wire failure 5. Refrigeration cycle failure Check Point 1 : Check Indoor Unit Does Indoor unit FAN run on HIGH FAN? Is Air filter dirty? Is Heat exchanger clogged?
  • Page 67 Forecast of Cause : Trouble shooting 34 1. Abnormal installation (Indoor/ Outdoor) Abnormal Noise 2. Fan failure (Indoor/ Outdoor) 3. Compressor failure (Outdoor) Diagnosis method when Abnormal Noise is occurred Abnormal noise is coming from Indoor unit. Abnormal noise is coming from Outdoor unit. (Check and correct followings) (Check and correct followings) Is Main Unit installed in stable condition?

  • Page 68: Service Parts Information

    2-4 SERVICE PARTS INFORMATION SERVICE PARTS INFORMATION 1 Compressor Diagnosis method of Compressor ( If Outdoor Unit LED displays Error, refer to Trouble shooting ) Abnormal noise Stops soon after starting up Does not start up Is there open or loose connection Is there open or loose connection Check if vibration noise by cable?
  • Page 69 SERVICE PARTS INFORMATION 2 Inverter Compressor Check Point 1 : Check Connection Check terminal connection of Compressor (loose or incorrect wiring) Terminal cover opened C(T) (BLACK) (WHITE) (RED) Check Point 2 : Check Winding Resistance Check winding resistance of each terminal If the resistance value is 0 or infinite, replace Compressor.
  • Page 70 SERVICE PARTS INFORMATION 3 Outdoor unit Electronic Expansion Valve ( EEV ) Check Point 1 : Check Connections Check Point 2 : Check Coil of EEV Remove connector, check each winding Check connection of connector resistance of Coil. ( Loose connector or open cable ) EXPANSION VALVE A Read wire Resistance value...
  • Page 71 SERVICE PARTS INFORMATION 4 Indoor unit fan motor Check Point 1 : Check rotation of Fan Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor) >>If Fan or Bearing is abnormal, replace it. Check Point 2 : Check resistance of Indoor Fan Motor Refer to below.

  • Page 73: Replacement Parts

    R410A Wall Mounted type INVERTER (MULTI ) 3 . REPLACEMENT PARTS...
  • Page 74 3. REPLACEMENT PARTS Top Panel Sub Assy Cabinet Left Assy Protective Net REM Plate Cabinet Right Assy Grip Switch Cover A Assy Propeller Fan Fan Ring Motor Bracket Fan Motor Switch Cover B Emblem Rear Front Panel 03-01...
  • Page 75 Condenser Total Assy Searater B Assy Reactor Assy Valve Bracket 2-Way Valve Assy 3-Way Valve Assy 2-Way Valve Assy 3-Way Valve Assy Compressor Assy Solenoid 4-Way Valve Assy Expansion Valve Coil (L=650) Expansion Valve Coil (L=850) Expansion Valve Assy 03-02...
  • Page 76 Case Cover Inverter PCB Assy PCB Holder Inverter Case Assy Fuse Fuse holder Terminal (3P) Terminal (6P) Inverter Case Cover Cord clamp Terminal Bracket Assy 03-03...
  • Page 77 1116,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan Jan. 2012 Printed in Japan...

This manual is also suitable for:

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