Fujitsu ASU7RLF1 Service Instructions Manual
  1. Manuals
  2. Brands
  3. Fujitsu Manuals
  4. Air Conditioner
  5. ASU7RLF1
  6. Service instructions manual

Fujitsu ASU7RLF1 Service Instructions Manual

Split type room air conditioner compact wall mounted / wall mounted / floor compact cassette / slim duct inverter multi
Hide thumbs Also See for ASU7RLF1:
Table of Contents

Advertisement

Quick Links

See also: Service Manual , Design & Technical Manual
SERVICE
INSTRUCTION
R410A
SPLIT TYPE
ROOM AIR CONDITIONER
Compact Wall Mounted
Wall Mounted / Floor
Compact Cassette / Slim Duct
INVERTER MULTI
Models
Indoor unit
ASU7RLF1
ASU9RLF1
ASU12RLF1
ASU18RLF
AGU9RLF
AGU12RLF
AGU15RLF
AUU7RLF
AUU9RLF
AUU12RLF
AUU18RLF
ARU7RLF
ARU9RLF
ARU12RLF
ARU18RLF
Outdoor unit
AOU18RLXFZH
AOU24RLXFZH

Advertisement

Table of Contents
loading

Related Manuals for Fujitsu ASU7RLF1

Summary of Contents for Fujitsu ASU7RLF1

  • Page 1 SPLIT TYPE ROOM AIR CONDITIONER Compact Wall Mounted Wall Mounted / Floor Compact Cassette / Slim Duct INVERTER MULTI SERVICE INSTRUCTION Models Indoor unit Outdoor unit ASU7RLF1 AOU18RLXFZH ASU9RLF1 AOU24RLXFZH ASU12RLF1 ASU18RLF AGU9RLF AGU12RLF AGU15RLF AUU7RLF R410A AUU9RLF AUU12RLF AUU18RLF...

  • 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....................01-10 5. OUTDOOR FAN CONTROL..................01-14 6. TIMER OPERATION CONTROL................01-15 7. COMPRESSOR CONTROL..................01-18 8. ELECTRONIC EXPANSION VALVE CONTROL............01-19 9.

  • Page 3: Description Of Each Control Operation

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

  • Page 4: Capacity Control

    1. 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 AUTO CHANGEOVER operation flow chart START Setting temperature Room temp. Ts+4°F(+2 °C) ? Room temp. Ts -4°F(-2 °C) ? Middle zone Operation mode COOLING (AUTO:DRY) HEATING OPERATION of outdoor unit : Cooling or Dry? OPERATION Thermostat remains Thermostat remains Operation mode in OFF state for 6 minutes or in OFF state for 6 minutes or of outdoor unit : Heating?

  • Page 6: Indoor Fan Control

    3. INDOOR FAN CONTROL 1. Fan speed ( Table 2 : Indoor fan speed table ) (rpm) (rpm) ASU9RLF1 ASU7RLF1 Operation mode Air flow mode Fan Speed Operation mode Air flow mode Fan Speed Heating Heating Poweful Poweful 1140 1090...
  • Page 7 (rpm) AGU9RLF Speed Operation mode Air flow mode Upper & Lower Upper air flow mode air flow mode 1230/ 1040 1300 Powerful Heating (Upper/ Lower) 1120/ 950 1230 1000/ 850 1090 860/ 730 Quiet 660/ 560 Cool air prevention 660/ 560 S-Lo 660/ 560 1230/ 1040...
  • Page 8 (rpm) (rpm) AUU7RLF AUU9RLF Operation mode Air flow mode Fan Speed Operation mode Fan Speed Air flow mode Heating Heating Quiet Quiet Cool Air Prevention Cool Air Prevention S-Lo S-Lo Cooling / Fan Cooling / Fan uiet Quiet *Soft Quiet *Soft Quiet S-Lo S-Lo...
  • Page 9 (rpm) (rpm) ARU7RLF (Static pressure:25Pa) ARU9RLF (Static pressure:25Pa) Operation mode Fan Speed Operation mode Fan Speed Air flow mode Air flow mode 1160 1260 Heating Heating 1000 1160 1060 Quiet Quiet S-Lo S-Lo 1160 1260 Cooling / Fan Cooling / Fan 1000 1160 1060...
  • 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 will run according to a room temperature, as shown in Fig. 4 . On the other hand, if switched in [Hi] [Quiet], the indoor fan will run at a constant airflow of [Heat] operation modes Quiet, Lo, Me, Hi, as shown in Table 2 .
  • Page 12 < ARU type > < AUU type > When Indoor heat exchanger When Indoor heat exchanger When Indoor heat exchanger When Indoor heat exchanger temperature rises temperature rises temperature drops temperature drops Hi or setting ° FAN mode 98.6 107.6°F (37°C) °...

  • Page 13: Louver Control

    4. LOUVER CONTROL > For Compact Wall Mounted Type < ASU7/ 9/ 12RLF1 1. VERTICAL LOUVER CONTROL (Function Range) ( Fig. 6 : Vertical air direction range ) Each time the button is pressed, the air direction range will change as follow: The Remote Controller's display does not change.
  • Page 14 For Wall Mounted Type < ASU18RLF > 1. VERTICAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range will change as follow: ( Fig. 7 : Vertical air direction range ) ① ② ③ ④ ⑤...
  • Page 15 For Floor Type < AGU9/ 12/ 15RLF > (Function and Operation Range) Each time the button is pressed, the air direction range will change as follows: ( Fig. 9 : 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.
  • Page 16 For Compact Cassette Type < AUU7/ 9/ 12/ 18RLF > ( Fig. 10 : Vertical air direction range ) (Function Range) Each time the button is pressed, the air direction range will change as follows: (Operation Range) ①,②,③,④ : During Cooling / Dry / Heating / Fan modes Use the air direction adjustments within the ranges shown above.

  • Page 17: Outdoor Fan Control

    5. OUTDOOR FAN CONTROL 1. Outdoor Fan Motor The Table 5 shows the fan speed of the outdoor unit. ( Table 5 : Fan speed of the outdoor unit ) Cooling Heating AOU18RLXFZH 850/ 780/ 660/ 400/ 300/ 200 rpm 900/ 780/ 660/ 400/ 300/ 200 rpm AOU24RLXFZH * It runs at 500rpm for 20 seconds after starting up the outdoor fan.

  • Page 18: Timer Operation Control

    6. TIMER OPEARTION CONTROL 6-1 WIRELESS REMOTE CONTROLLER The Table 6 shows the available timer setting based on the product model. ( Table 6 : Timer setting ) ON TIMER / OFF TIMER PROGRAM TIMER SLEEP TIMER 1. ON / OFF TIMER OFF timer : When the clock reaches the set time, the air conditioner will be turned off.
  • Page 19 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 2°F(1°C).

  • Page 20: Wired Remote Controller

    6-2 WIRED REMOTE CONTROLLER The Table 7 shows the available timer setting based on the product model. ( Table 7 : 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 21: Compressor Control

    7. COMPRESSOR CONTROL 7. COMPRESSOR CONTROL 1. OPERATION FREQUENCY RANGE 1. OPERATION FREQUENCY RANGE The operation frequency of the compressor is different based on the operation mode as The operation frequency of the compressor is different based on the operation mode as shown in the Table 8 .

  • Page 22: 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 Table 9 . The compressor frequency, the temperatures detected by the discharge temperature sensor and the outdoor temperature sensor.

  • Page 23: Auto Restart

    12. AUTO RESTART When the power was interrupted by a power failure, etc. during operation, the operation contents at that time are memorized and when power is recovered, operation is automatically resumed with the memorized operation contents. ( Table 10 : Operation contents memorized when the power is interrupted ) Wired remote controller Wired remote controller Wireless remote controller...

  • Page 24: Compressor Preheating

    14. COMPRESSOR PREHEATING When the outdoor heat exchanger temperature is lower than Operation temperature (Refer to Table 12) and the heating operation has been stopped for 30 minutes, 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 25: Heat Insulation ( Building Insulation )

    . HEAT INSULATION CONDITION ( BUILDING INSULATION ) l more suitable for homes or buildings This setting can make the room temperature contro with high insulation (Function Number 95). When the thermo sensor is turned ON it controls the compressor frequency at initial start to prevent overshoot in heating or cooling.

  • Page 26: Base Heater Operation

    21. BASE HEATER OPERATION The base heater is operated as shown in Fig. 16 . ( Fig. 16 : Base heater control ) When outdoor When outdoor temperature drops temperature rises 41°F (5°C) 36°F (2°C) When the compressor stops, Base heater is OFF. When the outdoor fan motor stops, Base heater is OFF.

  • Page 27: Drain Pump Operation

    24. DRAIN PUMP OPERATION ( For AU / AR type ) During Cooling / Dry mode 1. When the compressor starts, the drain pump starts simultaneously. 2. The drain pump operates continuously for 3 minutes after the compressor is turned off. 3.

  • Page 28: Defrost Operation Control

    25. 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 16, 17 . 1-1 NORMAL DEFROST ( Table 16 : Condition of starting defrost operation ) Normal defrost Compressor integrating operation time Less than 35 minutes...
  • Page 29 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 Integrating defrost Normal defrost Outside air temp. 4°F(-20°C) < Intermittent operation Continuous operation >...

  • Page 30: Various Protections

    26. 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 Temperature , the compressor frequency is decreased 20rps(AOU18RLXFZH) or 10rps(AOU24RLXFZH), and it continues to decrease the frequency for 20rps(AOU18RLXFZH) or 10rps(AOU24RLXFZH) every 120 seconds until the temperature becomes lower than Temperature .
  • Page 31 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. ( Fig. 21 : Heating overload protection control ) AOU18RLXFZH AOU24RLXFZH Indoor heat exchanger...

  • Page 32: Trouble Shooting

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

  • Page 33: 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 shooting Error Contents Operation Timer Economy...

  • Page 34: 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 35: Outdoor Unit Display

    2-1-3 OUTDOOR UNIT DISPLAY 1. ERROR DISPLAY Trouble Error Contents LED1 LED2 LED3 LED4 shooting 2 times Discharge Thermistor Error Heat Ex. Thermistor Error 3 times 18-1 Outdoor Thermistor Error 4 times 2-Way Valve Thermistor Error 5 times (for Indoor unit A) 2-Way Valve Thermistor Error 5 times (for Indoor unit B)

  • Page 36: Trouble Shooting With Error Code

    2-2 TROUBLE SHOOTING WITH ERROR CODE Indicate or Display: Trouble shooting 1 Outdoor Unit : No indication OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 1 time Flash, Timer lamp: 1 time Flash Serial Communication Error Economy lamp: Continuous flash. (Serial Reverse Transfer Error) ERROR CODE : [E : 11] Detective Actuators:...
  • Page 37 Indicate or Display: Trouble shooting 2 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 1 time Flash, Timer lamp: 1 time Flash Serial Communication Error Economy lamp: Continuous flash. (Serial Forward Transfer Error) ERROR CODE : [E : 11] Detective Actuators: Detective details: When the outdoor unit cannot properly receive the serial signal from...
  • Page 38 Indicate or Display: Trouble shooting 3 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 1 time Flash, Timer lamp: 2 time Flash Wired Remote Controller Economy lamp: Continuous flash. Communication Error ERROR CODE : [E : 12] Detective Actuators: Detective details: Indoor unit Controller PCB...
  • Page 39 Indicate or Display: Trouble shooting 4 Outdoor Unit : LED 1 : 11 time Flash INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 2 time Flash, Timer lamp: 2 time Flash Indoor Unit Capacity Error Economy lamp: Continuous flash. ERROR CODE : [E : 22] Detective Actuators: Detective details:...
  • Page 40 Indicate or Display: Trouble shooting 5 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 3 time Flash, Timer lamp: 2 time Flash Indoor Unit Model Information Error Economy lamp: Continuous flash. EEPROM Access Abnormal ERROR CODE : [E : 32] Detective details: Detective Actuators:...
  • Page 41 Indicate or Display: Trouble shooting 6 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 3 time Flash, Timer lamp: 5 time Flash Economy lamp: Continuous flash. Manual Auto Switch Error ERROR CODE : [E : 35] Detective Actuators: Detective details: Indoor Unit Controller PCB...
  • Page 42 Indicate or Display: Trouble shooting 7 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 4 time Flash, Timer lamp: 1 time Flash Economy lamp: Continuous flash. Indoor Room Thermistor Error ERROR CODE : [E : 41] Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit...
  • Page 43 Indicate or Display: Trouble shooting 8 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 4 time Flash, Timer lamp: 2 time Flash Economy lamp: Continuous flash. Indoor Heat Ex. Thermistor Error ERROR CODE : [E : 42] Detective Actuators: Detective details: Indoor Unit Controller PCB...
  • Page 44 Indicate or Display: Trouble shooting 9 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 5 time Flash, Timer lamp: 1 time Flash Economy lamp: Continuous flash. Indoor Unit Fan Motor Error ERROR CODE : [E : 51] Detective Actuators: Detective details: When the condition that actual frequency of Indoor Fan is...
  • Page 45 Indicate or Display: Trouble shooting 10 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 5 time Flash, Timer lamp: 3 time Flash Economy lamp: Continuous flash. Drain Pump Error ERROR CODE : [E : 53] Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit...
  • Page 46 Indicate or Display: Trouble shooting 11-1 INDOOR UNIT Error Method: Outdoor Unit : No indication Indoor Unit : Operation lamp: 5 time Flash, Timer lamp: 7 time Flash Damper Error Economy lamp: Continuous flash. (Damper(Open/Close) detection Limit switch error) ERROR CODE : [E : 57] Detective details: Detective Actuators: When limit switch were not able to detect the close though the damper close.
  • Page 47 Indicate or Display: Trouble shooting 11-2 INDOOR UNIT Error Method: Outdoor Unit : No indication Indoor Unit : Operation lamp: 5 time Flash, Timer lamp: 7 time Flash Damper Error Economy lamp: Continuous flash. (Damper(Open/Close) simultaneous detection ERROR CODE : [E : 57] Limit switch error) Detective Actuators: Detective details:...
  • Page 48 Trouble shooting 12 Indicate or Display: INDOOR UNIT Error Method: INDOOR UNIT Outdoor Unit : No indication Indoor Unit : Operation lamp: 5 time Flash, Timer lamp: 8 time Flash Intake Grille Error Economy lamp: Continuous flash. ERROR CODE : [E : 58] Detective details: Detective Actuators: Indoor unit Controller PCB...
  • Page 49 Indicate or Display: Trouble shooting 13 Outdoor Unit : LED 1 : 17 time Flash or 21 time Flash INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 6 time Flash, Timer lamp: 2 time Flash Outdoor Unit Model Information Error Economy lamp: Continuous flash.
  • Page 50 Indicate or Display: Trouble shooting 14 Outdoor Unit : LED 1 : 22 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 6 time Flash, Timer lamp: 4 time Flash Economy lamp: Continuous flash. Active Filter Error ERROR CODE : [E : 64] Detective Actuators: Detective details: Outdoor unit Main PCB...
  • Page 51 Indicate or Display: Trouble shooting 15 Outdoor Unit : LED 1 : 14 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 6 time Flash, Timer lamp: 5 time Flash Economy lamp: Continuous flash. IPM Error ERROR CODE : [E : 65] Detective details: Detective Actuators: When more than normal operating current to IPM in Main PCB flows,...
  • Page 52 Indicate or Display: Trouble shooting 16 Outdoor Unit : LED 1 : 2 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 1 time Flash Discharge Thermistor Error Economy lamp: Continuous flash. ERROR CODE : [E : 71] Detective details: Detective Actuators: When Discharge Pipe Temperature Thermistor open or short-circuit...
  • Page 53 Indicate or Display: Trouble shooting 17 Outdoor Unit : LED 1 : 7 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 2 time Flash Compressor Thermistor Error Economy lamp: Continuous flash. ERROR CODE : [E : 72] Detective Actuators: Detective details: When Compressor Temperature Thermistor open or short-circuit is...
  • Page 54 Indicate or Display: Trouble shooting 18-1 Outdoor Unit : LED 1 : 3 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 3 time Flash Heat Ex. OUT Thermistor Error Economy lamp: Continuous flash. ERROR CODE : [E : 73] Detective Actuators: Detective details:...
  • Page 55 Indicate or Display: Trouble shooting 18-2 Outdoor Unit : LED 1 : 16 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 3 time Flash Heat Ex. MID Thermistor Error Economy lamp: Continuous flash. ERROR CODE : [E : 73] Detective Actuators: Detective details:...
  • Page 56 Indicate or Display: Trouble shooting 19 Outdoor Unit : LED 1 : 4 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 4 time Flash Outdoor Thermistor Error Economy lamp: Continuous flash. ERROR CODE : [E : 74] Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit...
  • Page 57 Indicate or Display: Trouble shooting 20 Outdoor Unit : LED 1 : 5 time Flash (for Indoor unit A) OUTDOOR UNIT Error Method: LED 2 : 5 time Flash (for Indoor unit B) 2-Way Valve Thermistor Error LED 3 : 5 time Flash (for Indoor unit C) Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 6 time Flash Economy lamp: Continuous flash.
  • Page 58 Indicate or Display: Trouble shooting 21 Outdoor Unit : LED 1 : 6 time Flash (for Indoor unit A) OUTDOOR UNIT Error Method: LED 2 : 6 time Flash (for Indoor unit B) LED 3 : 6 time Flash (for Indoor unit C) 3-Way Valve Thermistor Error Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 6 time Flash...
  • Page 59 Indicate or Display: Trouble shooting 22 Outdoor Unit : LED 1 : 8 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 7 time Flash Heat Sink Thermistor Error Economy lamp: Continuous flash. ERROR CODE : [E : 77] Detective details: Detective Actuators:...
  • Page 60 Trouble shooting 23 Indicate or Display: OUTDOOR UNIT Error Method: Outdoor Unit : LED 1 : 9 time Flash Indoor Unit : Operation lamp: 8 time Flash, Timer lamp: 6 time Flash High Pressure Switch Error Economy lamp: Continuous flash. ERROR CODE : [E : 86] Detective details: Detective Actuators:...
  • Page 61 Indicate or Display: Trouble shooting 24 Outdoor Unit : LED 1 : 12 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 9 time Flash, Timer lamp: 4 time Flash Economy lamp: Continuous flash. Over Current Error ERROR CODE : [E : 94] Detective details: Detective Actuators: "Protection stop by overcurrent generation after inverter compressor start...
  • Page 62 Indicate or Display: Trouble shooting 25 Outdoor Unit : LED 1 : 13 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 9 time Flash, Timer lamp: 5 time Flash Economy lamp: Continuous flash. Compressor Control Error ERROR CODE : [E : 95] Detective details: Detective Actuators: While running the compressor, if the detected rotor location is out of...
  • Page 63 Indicate or Display: Trouble shooting 26 Outdoor Unit : LED 1 : 15 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 9 time Flash, Timer lamp: 7 time Flash Outdoor Unit Fan Motor Error Economy lamp: Continuous flash. ERROR CODE : [E : 97] Detective Actuators: Detective details:...
  • Page 64 Indicate or Display: Trouble shooting 27 Outdoor Unit : LED 1 : 20 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 9 time Flash, Timer lamp: 9 time Flash 4-Way Valve Error Economy lamp: Continuous flash. ERROR CODE : [E : 99] Detective Actuators: Detective details: When the indoor heat exchanger temperature is compared with...
  • Page 65 Trouble shooting 28 Indicate or Display: OUTDOOR UNIT Error Method: Outdoor Unit : LED 1 : 18 time Flash Indoor Unit : Operation lamp: 10 time Flash, Timer lamp: 1 time Flash Discharge Temp. Error Economy lamp: Continuous flash. ERROR CODE : [E : A1] Detective details: Detective Actuators: °F(110°C)
  • Page 66 Indicate or Display: Trouble shooting 29 Outdoor Unit : LED 1 : 19 time Flash OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 10 time Flash, Timer lamp: 3 time Flash Compressor Temp. Error Economy lamp: Continuous flash. ERROR CODE : [E : A3] Detective details: Detective Actuators: "Protection stop by...

  • Page 67: 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 68 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 69 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 70 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 71 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 72 Forecast of Cause Trouble shooting 36 1. House insulation setting has not been changed. 2. Temperature sensing location has not been changed. Too Warm 3. Installation location of the wired remote. 4. Function settings have not been changed. Check Point 1 : Check insulation level of structure Check Point 1-1 : Check Function Setting of house If insulation level is greater than R-13 set function 95 to 01.
  • Page 73 “Wired remote sensor” Check Point 3-1 : Check Function Setting Check Point 3 : Check the remote controller display Is function 42 (Indoor room temperature sensor Is the "Thermo Sensor Icon" displayed on the screen? switching function) set to 01? Ref.) Function Number Setting Va lue Setting Description...
  • Page 74 Forecast of Cause Trouble shooting 37 1. House insulation setting has not been changed. 2. Temperature sensing location has not been changed. Too Cool 3. Installation location of the wired remote. 4. Function settings have not been changed. Check Point 1-1 : Check Function Setting Check Point 1 : Check insulation level of structure of house If insulation level is greater than R-13 set function 95 to 01.
  • Page 75 “Wired remote sensor” Check Point 3-1 : Check Function Setting Check Point 3 : Check the remote controller display Is function 42 (Indoor room temperature sensor Is the "Thermo Sensor Icon" displayed on the screen? switching function) set to 01? Ref.) Function Number Setting Va lue Setting Description...

  • Page 76: 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 77 SERVICE PARTS INFORMATION 2 Compressor Check Point 1 : Check Connection Check terminal connection of Compressor Check terminal connection of Main PCB (loose or incorrect wiring) (loose or incorrect wiring) W (T) V(S) (BLACK) Main PCB (WHITE) TM305 TM304 TM303 Main PCB BLACK WHITE...
  • Page 78 SERVICE PARTS INFORMATION 3 Outdoor unit Electronic Expansion Valve ( EEV ) Check Point 1 : Check Connections Check connection of connector ( Loose connector or open cable ) For AOU18RLXFZH For AOU24RLXFZH EXPANSION EXPANSION VALVE COIL A VALVE COIL A BROWN BROWN BLUE...
  • Page 79 Check Point 3 : Check Voltage from Main PCB. Check Point 2 : Check Coil of EEV Remove connector, check each winding Remove Connector and check Voltage (DC12V) resistance of Coil. If it does not appear, replace Main PCB. Read wire Resistance value White - Red Check Point 4 : Check Noise at start up...
  • Page 80 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 81 SERVICE PARTS INFORMATION 5 Outdoor 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 Outdoor Fan Motor Refer to below.
  • Page 82 SERVICE PARTS INFORMATION 6 Active filter module Check Point 1 : Check Open or Short-circuit and Diode (D1) Remove connector, check the open or short-circuit and the diode in the module Check the open or short-circuit Table.1 Each type standard value LOT No.
  • Page 83 SERVICE PARTS INFORMATION 7 Heater Unit Check Point 1 : Check Connections Check connection of connector ( Loose connector or open cable ) AOU18 /24RLXFZH HEATER WHITE BLACK THERMOSTAT 131°F (55°C) CN53 BLACK Check Point 2 : Check electrical components Check Check Fuses.
  • Page 84 3-3-17,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan February. 2015 Printed in Japan...

This manual is also suitable for:

Asu9rlf1Agu15rlfAsu12rlf1Agu9rlfAsu18rlfAgu12rlf ... Show all

Table of Contents