Fujitsu AU*24LUAR Service Instruction
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Fujitsu AU*24LUAR Service Instruction

Fujitsu AU*24LUAR Service Instruction

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SERVICE
INSTRUCTION
R410A
SPLIT TYPE
ROOM AIR CONDITIONER
CASSETTE
INVERTER
Models Indoor unit Outdoor unit
AU*24LUAR
AU*30LUAS
AU*36LUAS
AU*45LUAS
AU*54LUAS
type
AO*24LMAKL
AO*30LMAWL
AO*36LMAWL
AO*45LJBYL
AO*54LJBYL

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Summary of Contents for Fujitsu AU*24LUAR

  • Page 1 SPLIT TYPE ROOM AIR CONDITIONER CASSETTE type INVERTER SERVICE INSTRUCTION Models Indoor unit Outdoor unit AO*24LMAKL AU*24LUAR AO*30LMAWL AU*30LUAS AU*36LUAS AO*36LMAWL AU*45LUAS AO*45LJBYL AU*54LUAS AO*54LJBYL R410A...

  • Page 2: Table Of Contents

    CONTENTS 1. SPECIFICATIONS SPECIFICATIONS......................01-01 2. DIMENSIONS DIMENSIONS........................02-01 3. REFRIGERANT SYSTEM DIAGRAM REFRIGERANT CIRCUIT....................03-01 4. CIRCUIT DIAGRAM CIRCUIT DIAGRAM......................04-01 5. DESCRIPTION OF EACH CONTROL OPERATION 5-1 COOLING OPERATION.................... 05-01 5-1-1 COOLING CAPACITY CONTROL..............05-01 5-2 HEATING OPERATION..................... 05-02 5-2-1 HEATING CAPACITY CONTROL..............
  • Page 3 6. REFRIGERANT CAUTION -R410A- 6-1 R410A TOOLS......................06-01 6-2 PRECAUTION FOR INSTALLATION................. 06-02 6-3 PRECAUTION FOR SERVICING................06-04 6-4 NEW REFRIGERANT R410A..................06-05 6-5 DEFFERENCE FROM CONVENTIONAL MODEL (R22) AND PRECAUTIONS..06-08 7. TROUBLE SHOOTING 7-1 ERROR DISPLAY...................... 07-01 7-1-1 WIRED REMOTE CONTROLLER DISPLAY............07-01 07-03 7-1-2 OUTDOOR UNIT DISPLAY................
  • Page 4 10. REPLACEMENT PARTS 1 REPLACEMENT PARTS ( For OUTDOOR UNIT )............10-01 1-1 For AOU18/ 24LMAKL.................... 10-01 1-1-1 PARTS LAYOUT DRAWING................10-01 1-1-2 WIRING........................ 10-03 1-1-3 DISASSEMBLY PROCESS................. 10-04 1-2 For AO*30/ 36LMAWL..................... 10-08 1-2-1 PARTS LAYOUT DRAWING................10-08 1-2-2 WIRING........................ 10-10 1-2-3 DISASSEMBLY PROCESS.................

  • Page 5: Specifications

    R410A CASSETTE type INVERTER 1 . SPECIFICATIONS...
  • Page 6 1. SPECIFICATIONS CASSETTE MODELS TYPE INVERTER HEAT PUMP TYPE INDOOR AU 24LUAR MODEL NAME OUTDOOR AO 24LMAKL POWER SOURCE 230V 50Hz AVAILABLE VOLTAGE RANGE 198-264V 50Hz EUROPEAN ENERGY LABEL COOLING 7.10/8.00 COOLING RATED / MAX 24200/27300 BTU/h CAPACITY 7.80/9.00 HEATING RATED / MAX BTU/h 26600/30700...

  • Page 7: Dimensions

    CASSETTE MODELS TYPE INVERTER HEAT PUMP TYPE INDOOR AU 30LUAS AU 36LUAS MODEL NAME OUTDOOR AO 30LMAWL AO 36LMAWL POWER SOURCE 230V 50Hz 230V 50Hz AVAILABLE VOLTAGE RANGE 198-264V 50Hz EUROPEAN ENERGY LABEL 8.50/10.00 10.00/11.20 COOLING RATED/MAX BTU/h 29000/34100 34100/38200 CAPACITY 10.00/11.20 11.20/12.77...
  • Page 8 CASSETTE TYPE TYPE INVERTER HEAT PUMP TYPE INDOOR AU 45LUAS MODEL NAME OUTDOOR AO 45LJBYL POWER SOURCE 230V 50Hz AVAILABLE VOLTAGE RANGE 198-264V 50Hz 12.5 / 14.0 COOLING RATED / MAX BTU/h 42700 / 47800 CAPACITY 14.0 / 16.0 HEATING RATED / MAX BTU/h 48000 / 56300...
  • Page 9 CASSETTE MODELS TYPE INVERTER HEAT PUMP TYPE INDOOR AUT30LUAS AUT36LUAS MODEL NAME OUTDOOR AOT30LMAWL AOT36LMAWL POWER SOURCE 240V 50Hz 240V 50Hz AVAILABLE VOLTAGE RANGE 198-264V 50Hz 8.50 / 10.00 10.00 / 11.20 COOLING RATED/MAX BTU/h 29000 / 34100 34100 / 38200 CAPACITY 10.00 / 11.20 11.20 / 12.77...
  • Page 10 CASSETTE MODELS TYPE INVERTER HEAT PUMP TYPE INDOOR AUT45LUAS AUT54LUAS MODEL NAME OUTDOOR AOT45LJBYL AOT54LJBYL 240V 50Hz 240V 50Hz POWER SOURCE 198-264V 50Hz 198-264V 50Hz AVAILABLE VOLTAGE RANGE 12.5 / 14.0 14.0 / 14.5 COOLING RATED / MAX BTU/h 42700 / 47800 47800 / 49500 CAPACITY 14.0 / 16.0...

  • Page 11: Dimensions

    R410A CASSETTE type INVERTER 2 . DIMENSIONS...
  • Page 12 2. DIMENSIONS MODEL : AU*24LUAR (Unit : mm) Bottom view (Panel) Bottom view Drain inside Dia. outside Dia. 298.5 305.5 248.5 Side view (Standard setting) Side view (Slender setting) MODEL : AO*24LMAKL (Unit : mm) Top view Front view Side view...
  • Page 13 MODEL : AU*30/ 36LUAS (Unit : mm) Bottom view (Panel) Bottom view Drain Inside Dia. 32 Outside Dia. 37 298.5 305.5 248.5 Side view (Standard setting) Side view (Slender setting) MODEL : AO*30/ 36LMAWL (Unit : mm) Top view Front view Side view 02-02...
  • Page 14 MODEL : AU*45/ 54LUAS (Unit : mm) Bottom view (Panel) Bottom view Drain Inside Dia. 32 Outside Dia. 37 298.5 305.5 248.5 Side view (Standard setting) Side view (Slender setting) MODEL : AO*45/ 54LJBYL (Unit : mm) Top view Front view Side view 02-03...

  • Page 15: Refrigerant System Diagram

    R410A CASSETTE type INVERTER 3 . REFRIGERANT SYSTEM DIAGRAM...

  • Page 16: Refrigerant Circuit

    3. REFRIGERANT CIRCUIT MODEL : AU*24LUAR / AO*24LMAKL Outdoor Unit Indoor Unit Refrigerant Pipe Ø15.88mm(5/8") MUFFLER HIGH PRESSURE SWITCH 4-Way valve CONDENSER EVAPOLATOR ACCUMULATOR COMPRESSOR EXPANSION STRAINER VALVE THERMISTOR(DISCHARGE TEMP.) Refrigerant Pipe THERMISTOR(ROOM TEMP.) THERMISTOR(OUTDOOR TEMP.) Ø9.52mm(3/8") THERMISTOR(PIPE TEMP.) THERMISTOR(PIPE TEMP.)

  • Page 17: Outdoor Unit

    MODEL : AU*30/ 36LUAS / AO*30/ 36LMAWL Outdoor Unit Indoor Unit PRESSURE Refrigerant Pipe CHECK VALVE Ø15.88mm(5/8") HIGH PRESSURE SWITCH Charging Valve 4-Way valve ACCUMULATOR CONDENSER EVAPOLATOR COMPRESSOR EXPANSION VALVE STRAINER STRAINER Refrigerant Pipe Ø9.52mm(3/8") Charging Valve THERMISTOR(DISCHARGE TEMP.) THERMISTOR(ROOM TEMP.) THERMISTOR(OUTDOOR TEMP.) THERMISTOR(PIPE TEMP.) THERMISTOR(PIPE TEMP.)
  • Page 18 MODEL : AU*45/ 54LUAS / AO*45/ 54LJBYL Outdoor Unit Indoor Unit PRESSURE Refrigerant Pipe CHECK VALVE Ø15.88mm(5/8") HIGH PRESSURE SWITCH Charging Valve MUFFLER 4-Way valve ACCUMULATOR CONDENSER EVAPOLATOR STRAINER COMPRESSOR EXPANSION VALVE STRAINER STRAINER Refrigerant Pipe Ø9.52mm(3/8") Charging Valve THERMISTOR(DISCHARGE TEMP.) THERMISTOR(ROOM TEMP.) THERMISTOR(OUTDOOR TEMP.) THERMISTOR(PIPE TEMP.)

  • Page 19: Circuit Diagram

    R410A CASSETTE type INVERTER 4 . CIRCUIT DIAGRAM...
  • Page 20 4. CIRCUIT DIAGRAM MODEL : AU*24LUAR THERMISTOR TO REMOTE (PIPE TEMP.) CONTROL UNIT THERMISTOR TERMINAL (ROOM TEMP.) STEPPING BROWN BROWN MOTOR WHITE BLACK ORANGE ORANGE YELLOW YELLOW WHITE WHITE FLOAT SWITCH BLACK BLACK BLACK BLACK DRAIN PUMP MOTOR YELLOW BLACK...
  • Page 21 MODEL : AU*30/ 36/ 45/ 54LUAS THERMISTOR TO REMOTE (PIPE TEMP.) CONTROL UNIT THERMISTOR TERMINAL (ROOM TEMP.) FAN MOTOR CAPACITOR WHITE WHITE WHITE BLACK STEPPING BROWN BROWN MOTOR ORANGE ORANGE YELLOW YELLOW WHITE WHITE FLOAT SWITCH BLACK BLACK BLACK WHITE BLACK BLACK DRAIN PUMP...
  • Page 22 MODEL : AO*24LMAKL ACTIVE WHITE FILTER CHOKE MODULE COIL WHITE CN11 1 2 3 4 5 6 CAPACITOR 1 2 3 4 W10 W11 TM104 TM105 CN407 COMPRESSOR COMPRESSOR PRESSURE SW TM305 CN37 WHITE TM304 COMPRESSOR FUSE THERMAL SW F2 T 3.15A 250V BLACK TM303 CN38...
  • Page 23 MODEL : AO*30/ 36LMAWL EMI FILTER CONNECTOR CN21 CN22 CN23 CN26 CN25 HIGH PRESSURE SW W305 CN37 COMPRESSOR BLACK SOLENOID WHITE WHITE CN30 FUSE BLACK COIL W304 F4 T 5A 250V BLACK BLACK W303 BLACK PRINTED FAN MOTOR CN800 BROWN WHITE CIRCUIT ACTIVE...
  • Page 24 MODEL : AO*45/ 54LJBYL EMI FILTER CONNECTOR CN21 CN22 CN23 CN26 CN25 HIGH PRESSURE SW W305 CN37 COMPRESSOR BLACK SOLENOID WHITE WHITE CN30 COIL FUSE BLACK W304 F4 T 5A 250V F2 T 3.15A 250V BLACK BLACK W303 BLACK PRINTED CN800 FAN MOTOR 1 BROWN...

  • Page 25: Description Of Each Control Operation

    R410A CASSETTE type INVERTER 5 . DESCRIPTION OF EACH CONTROL OPERATION...

  • Page 26: Cooling Operation

    However, the maximum frequency is limited in the range shown in Figure 1 based on the fan speed mode and the outdoor temperature. ( Table 1 : Compressor Frequency Range ) minimum maximum frequency frequency AU*24LUAR 15Hz 75Hz 20Hz 90Hz AU*30LUAS AU*36LUAS...

  • Page 27: Heating Operation

    Table2. However, the maximum frequency is limited in the range shown in Figure 2 based on the outdoor temperature. ( Table 2 : Compressor Frequency Range ) minimum maximum frequency frequency AU*24LUAR 15Hz 75Hz AU*30LUAS 20Hz 95Hz AU*36LUAS 20Hz...

  • Page 28: Dry Operation

    The compressor rotation frequency shall change according to set temperature and room temperature variation which the room temperature sensor of the indoor unit has detected as shown in the Table 3. ( Table 3 : Compressor frequency ) Operating frequency AU*24LUAR 28Hz AU*30LUAS 45Hz AU*36LUAS...

  • Page 29: Auto Changeover Operation

    5-4. AUTO CHANGEOVER OPERATION When the air conditioner is set to the AUTO mode by remote control, operation starts in the optimum mode from among the HEATING, COOLING and MONITORING modes. During operation, the optimum mode is automatically swiched in accordance with temperature changes. The temperature can be set between 18°C and 30°C in 1 degC steps.

  • Page 30: Indoor Fan Control

    5-5. INDOOR FAN CONTROL 1. Fan speed ( Table 5 : Indoor Fan Speed ) AU*30LUAS AU*24LUAR Operation mode Air flow mode Speed (rpm) Operation mode Air flow mode Speed (rpm) Heating Heating S-Lo S-Lo Cooling Cooling S-Lo S-Lo AU*45LUAS...
  • Page 31 3. COOLING OPERATION Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Figure 5. On the other hand, if switched in [HIGH] [LOW], the indoor motor will run at a constant airflow of [COOL] operation modes LOW, MED, HIGH,as shown in Table 5.

  • Page 32: Outdoor Fan Control

    When the compressor frequency and outdoor temperature decrease, the outdoor fan speed also changes to the lower speed.) For AU*24LUAR When the outdoor heat exchanger tenperature is lower than 2°C, the fan speed switches to 780rpm on heating mode.

  • Page 33: Louver Control

    Cooling / Dry / Fan mode Horizontal flow Heating mode Downward flow For AU*24LUAR At the start of operation if the setting louver position is ,the setting position is set to after the louver moves from totally-enclosed position to . (Positioning Control)

  • Page 34: Compressor Control

    AU*54LUAS 20Hz 92Hz 20Hz 92Hz 53Hz 2. OPERATION FREQUENCY CONTROL AT START UP 2-1. For AU*24LUAR The compressor frequency soon after the start-up is controlled as shown in Figure 9. (Fig.9 : Compressor Control at Start-up) 80Hz Hold 56Hz 46sec...
  • Page 35 2-2. For AU*30/ 36/ 45/ 54LUAS The compressor frequency soon after the start-up is controlled as shown in Figure 10. (Fig.10 : Compressor Control at Start-up) Frequency Hold Frequency Time A Time B Time C Time D Time E For AU*30/ 36LUAS 1 Discharge pipe temp.

  • Page 36: Timer Operation Control

    5-9. TIMER OPERATION CONTROL 5-9-1 Wired Remote Controller AR-3TA14 ON / TIMER OFF / TIMER WEEKLY TIMER TEMPERATURE SET BACK TIMER 1. ON / OFF TIMER OFF timer : When the clock reaches the set time, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
  • Page 37 2-2. DAY OFF setting The DAY OFF setting is only available for days for which weekly settings already exist. If the operating time carries over to the next day (during a next day setting), the effective DAY OFF range will be set as shown below. Normal DAY OFF Operation mode...

  • Page 38: Electronic Expansion Valve Control

    5-10. 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 following values. The compressor frequency, the temperatures detected by the discharge temperature sensor and the outdoor temperature sensor. The pulse range of the electronic expansion valve control is between 50 to 480 pulses.

  • Page 39: Pump Down (For Au*30/ 36/ 45/ 54Luas)

    5-15. PUMP DOWN ( For AU*30/ 36/ 45/ 54LUAS ) Perform the following procedures to collect the refrigerant when moving the indoor unit or the outdoor unit. When the product is stopped: 1. Press the PUMP DOWN switch (SW2) on the outdoor unit. (The LED on the outdoor unit circuit board flickers every 1second.) 2.

  • Page 40: Defrost Operation Control

    5-17. DEFROST OPERATION CONTROL 1. CONDITION OF STARTING THE DEFROST OPERATION 1-1. For AU*24LUAR The defrost operation starts when the outdoor heat exchanger temperature sensor detects the temperature lower than the values shown in Table 9-1. (Table 9-1 : Condition of starting Defrost Operation)
  • Page 41 3. Defrost Flow Chart 3-1. For AU*24LUAR The defrosting shall proceed by the integrating operation time as follows. Heating operation start : Compressor ON (Not defrosted for 6 or 10 minutes) Compressor integrating operation: 40 minutes and over Outdoor heat exchanger temperarure: Below -8°C...
  • Page 42 3-2. AU*30/ 36/ 45/ 54LUAS The defrosting shall proceed by the integrating operation time and outdoor heat exchanger temperature as follows. Heating operation start : Compressor ON (Not defrosted for 6 or 10 minutes) AU*30/ 36LUAS AU*45/ 54LUAS Compressor integrating Compressor integrating operation: operation:...

  • Page 43: Drain Pump Operation

    5-18. DRAIN PUMP OPERATION During Cooling / Dry operation 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. When the compressor stops by the "Indoor heat exchanger de-icing function", the drain pump is turned off in 1 hour after the compressor stops.

  • Page 44: Various Protections

    When the discharge temperature becomes higher than Temperature ,the compressor stops. When the discharge temperature becomes lower than Temperature ,the compressor operates. (Table 11 : Discharge Temperature Over Rise Prevention Control / Release Temperature) Temperature Temperature Temperature Temperature AU*24LUAR AU*30LUAS AU*36LUAS 110°C 105°C 120°C 80°C AU*45LUAS AU*54LUAS 2.
  • Page 45 2-2. For AU*30/ 36/ 45/ 54LUAS The compressor frequency is controlled so that the outdoor unit input current does not exceeds the current limit value that was set up with the outdoor temperature. The compressor frequency returns to the designated frequency of the indoor unit at the time when the frequency becomes lower than the release value.
  • Page 46 3. ANTI-FREEZING CONTROL (Cooling mode) The compressor frequency decreases on cooling mode when the indoor heat exchanger temperature sensor detects the temperature lower than 3°C. Then, the anti-freezing control is released when it becomes higher than 6°C. (Fig.11 : Anti-freezing Protection Operation / Release Temperature) Indoor heat exchange temperature The compressor frequency is...

  • Page 47: Refrigerant Caution -R410A

    R410A CASSETTE type INVERTER 6 . REFRIGERANT CAUTION -R410A-...

  • Page 48: R410A Tools

    6. REFRIGERANT CAUTION -R410A- 6-1. R410A TOOLS This air conditioner used R410A. TOOLS AND EQUIPMENT (R410A) For installation and servicing, it is necessary to prepare the tools and machines that are different from the previous Pressure control and Gas charging refrigerant.

  • Page 49: Precaution For Installation

    6-2. PRECAUTION FOR INSTALLATION Precaution for installation Pipe diameter, recommended material and wall thickness Nominal diameter 1/4" 3/8" 1/2" 5/8" 3/4" 7/8" 1" 1 1/8" 1 1/4" 1 3/8" 1 1/2" (in) Outside diameter 6.35 9.52 12.70 15.88 19.05 22.22 25.40 28.58 31.75 34.92...

  • Page 50: Refrigerant Charge

    Be careful not to mix moisture and contamination into the pipe Moisture contamination in the pipe is a cause of trouble. Air purge Always use a vacuum pump to purge air. Refrigerant charge Don't charge from the phase side. Do it always from the liquid phase side.

  • Page 51: Precaution For Servicing

    6-3. PRECAUTION FOR SERVICING Feature 1 Refrigerant oil is different from before. Precaution on Tools Refrigerant oil for Different point from New Refrigerant previous one Use the gauge manifold and charge hose Synthetic oil Absorbent character for New Refrigerant(HFC), which shall is high.

  • Page 52: New Refrigerant R410A

    6-4. NEW REFRIGERANT R410A What is HFC ? Phase-out schedule of HCFC according to Montreal protocol (HCFC consumption of 1989) + 100% = (CFC consumption of 1989) x 2.8% total abolition only service use started control 0.5% 1996 2000 2004 2010 2015 2020...
  • Page 53 Ozone Layer depleting mechanism sunbeam Ozone CFCl What is CFC and HCFC? CFC : Chloro-Fluoro-Carbon High ODP( ozone depletion potential ) chemical compound, including chlorine. (ODP:0.6-1.0) For example : R12 (for refrigerator and car air-conditioner) HCFC : Hydro-Chloro-Fluoro-Carbon Low ODP chemical compound, including chlorine and hydrogen. (ODP:0.02-01) For example : R22 (for air-conditioner) : Hydro-Fluoro-Carbon...
  • Page 54 Summary of R407C and R410A characteristics R410A R407C higher system similar pressure as R22 performance (possible to design Advantage Near-Azeotropic large equipment) refrigerant 1.6 times higher Zeotropic refrigerant pressure than R22 Disadvantage (handle with care) (difficult to design against pressure resistance) Large Air-Conditioners Suitable for Small Air-Conditioners...

  • Page 55: Defference From Conventional Model (R22) And Precautions

    6-5. DEFFERENCE FROM CONVENTIONAL MODEL (R22) AND PRECAUTIONS • Use new synthetic oils such as ester because HFC series refrigerant has less solubility with mineral oils conventionally used for R22. • As these new synthetic oils are easily influenced by moisture and dusts, they must be treated more care- fully than the conventional lubricating oils.

  • Page 56: Trouble Shooting

    R410A CASSETTE type INVERTER 7 . TROUBLE SHOOTING...

  • Page 57: Error Display

    7. TROUBLESHOOTING 7-1 ERROR DISPLAY 7-1-1 WIRED REMOTE CONTROLLER DISPLAY 1. SELF - DIAGNOSIS When the error indication "E:EE" is displayed, inspection of the air conditioning system is necessary. Please consult authoilzed servise personnel. Run [Self-Diagnosis] if [E:EE] flashes on the clock display of the remote controller. Display Error code SU MO TU WE TH FR SA...
  • Page 58 2. ERROR CODE HISTORY DISPLAY Up to 16 memorized error codes may be displayed for the indoor unit connected to the remote controller. 1. Stop the air conditioner operation. 2. Press the SET TEMPERATURE buttons and the START/STOP button simultaneously for 5 seconds or more to start the self-diagnosis.

  • Page 59: Outdoor Unit Display

    Compressor rotor location cannot detect Compressor Start-up error 14 times blink Outdoor unit fan motor error (upper fan) 15 times blink Outdoor unit fan motor error (lower fan) 16 times blink (Only for AU*24LUAR (AO*24LMAKL)) Display Trouble LED Flashing Error contents priority shooting...

  • Page 60: Trouble Shooting With Error Code

    7-2 TROUBLE SHOOTING WITH ERROR CODE Trouble shooting 1 Indicate or Display: INDOOR UNIT Error Method: Indoor Unit : No LED Communication Error Outdoor Unit : No indication (Indoor unit Remote control) ERROR CODE : E : 00 Detective details: Detective Actuators: When the indoor unit cannot receive the signal from Wired Remote Indoor unit controller PCB circuit...
  • Page 61 Indicate or Display: Indicate or Display: Trouble shooting 2 OUTDOOR UNIT Error Method: Indoor Unit : No LED Communication Error Outdoor Unit : No indication (Serial Reverse Transfer Error) ERROR CODE : E : 01 Detective details: Detective Actuators: When the indoor unit cannot receive the serial signal from Outdoor unit Outdoor Unit Main PCB Circuit more than 10seconds.
  • Page 62 Indicate or Display: Trouble shooting 3 Indoor Unit : No LED INDOOR UNIT Error Method: INDOOR UNIT Outdoor Unit : No indication Room Temperature Sensor Error ERROR CODE : E : 02 / 03 Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit When Room Temperature Thermistor open or short-circuit is detected at power ON.
  • Page 63 Indicate or Display: Trouble shooting 4 INDOOR UNIT Error Method: Indoor Unit : No LED INDOOR UNIT Outdoor Unit : No indication Indoor Heat Exchanger Temperature ERROR CODE : E : 04 / 05 Sensor Error Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit When Heat Exchanger Temperature Thermistor open or short-circuit is detected at power ON.
  • Page 64 Indicate or Display: Trouble shooting 5 OUTDOOR UNIT Error Method: Indoor Unit : No LED Outdoor Unit : LED 3 times blink Outdoor Heat Exchanger Temperature ERROR CODE : E : 06 Sensor 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 65 Indicate or Display: Trouble shooting 6 Indoor Unit : No LED INDOOR UNIT Error Method: Outdoor Unit : No indication Water Drain Abnormal ERROR CODE : E : 09 Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit When Float Switch is ON for more than 3 minutes. Float Switch Forecast of Cause : 1.
  • Page 66 Indicate or Display: Trouble shooting 7 OUTDOOR UNIT Error Method: Indoor Unit : No LED INDOOR UNIT Outdoor Unit : LED 4 times blink Outdoor Temperature Sensor Error ERROR CODE : E : 0A 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.
  • Page 67 Indicate or Display: Trouble shooting 8 OUTDOOR UNIT Error Method: Indoor Unit : No LED INDOOR UNIT Outdoor Unit : LED 2 times blink Outdoor Discharge Pipe Temperature Sensor Error ERROR CODE : E : 0C 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.
  • Page 68 Trouble shooting 9 Indicate or Display: Indicate or Display: INDOOR UNIT Error Method: Indoor Unit : No LED Outdoor Unit : No indication Indoor EEPROM abnormal (Model No.) ERROR CODE : E : 11 Detective details: Detective Actuators: Indoor Unit Controller PCB circuit When the model information being read from EEPROM has an apparent error.
  • Page 69 Indicate or Display: Trouble shooting 10 INDOOR UNIT Error Method: Indoor Unit : No LED Outdoor Unit : No indication Indoor Fan Motor abnormal ERROR CODE : E : 12 Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit When the condition that actual frequency of Indoor Fan is Indoor Fan Motor below 1/3 of target frequency is continued more than 56 seconds.
  • Page 70 Indicate or Display: Trouble shooting 11 Indicate or Display: INDOOR UNIT Error Method: Indoor Unit : No LED Outdoor Communication Signal Error Outdoor Unit : LED 1 time blink (Forward Transfer Signal Error) ERROR CODE : E : 13 Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit When the outdoor unit cannot receive the serial signal from Indoor unit...
  • Page 71 Indicate or Display: Trouble shooting 12 Indoor Unit : No LED OUTDOOR UNIT Error Method: Outdoor Unit : LED 7 times blink Compressor Temperature Sensor Error ERROR CODE : E : 15 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.
  • Page 72 Indicate or Display: Trouble shooting 13 Indoor Unit : No LED OUTDOOR UNIT Error Method: INDOOR UNIT Outdoor Unit : LED 9 times blink/ 8 times blink(AU*24LMAKL) Pressure Switch Error ERROR CODE : E : 16 Detective details: Detective Actuators: When pressure switch open is detected in 10 seconds Outdoor Unit Main PCB Circuit Pressure Switch...
  • Page 73 Indicate or Display: Trouble shooting 14 Indoor Unit : No LED OUTDOOR UNIT Error Method: Outdoor Unit : LED 12 times blink/ 10 times blink(AU*24LMAKL) IPM error (Permanent Stop) ERROR CODE : E : 17 Detective Actuators: Detective details: When more than normal operating current to IPM in Main PCB flows, Outdoor Unit Main PCB Circuit the compressor stops.
  • Page 74 Noise : Check if there is any equipment causing harmonic wave near electric line.(Neon bulb or electric equipment that may cause harmonic wave) AU*24LUAR Check the complete insulation of grounding. Check Point 3 : Check Filter PCB and Main PCB Check DC voltage of CN1 (between 2 (Brown) and 3 (Red)) on Filter PCB.
  • Page 75 Indicate or Display: Trouble shooting 16 Indoor Unit : No LED OUTDOOR UNIT Error Method: INDOOR UNIT Outdoor Unit : No indication Active Filter Module (AFM) error ERROR CODE : E : 19 Detective details: Detective Actuators: Outdoor Unit Main PCB Circuit When inverter input DC voltage is higher than 467V or Active Filter Module lower than 237V.
  • Page 76 Indicate or Display: Trouble shooting 17 Indicate or Display: OUTDOOR UNIT Error Method: Indoor Unit : No LED Outdoor Unit : LED 13 times blink/ 12 times blink(AU*24LMAKL) Compressor rotor location cannot detect (Permanent Stop) ERROR CODE : E : 1A Detective details: Detective Actuators: While running the compressor, if the detected rotor location is out of...
  • Page 77 (If there is any surrounding equipment that causes heat) >>Upon the temperature coming down, restart operation. AU*24LUAR Check Point 3 : Check Output Voltage of Main PCB Check outdoor unit circuit diagram and the voltage. (Measure at Main PCB side connector)
  • Page 78 Indicate or Display: Trouble shooting 19 Indoor Unit : No LED OUTDOOR UNIT Error Method: Outdoor Unit : LED 8 times blink Heat Sink Temperature Sensor Error ERROR CODE : No indication 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.
  • Page 79 Indicate or Display: Trouble shooting 20 OUTDOOR UNIT Error Method: Indoor Unit : No LED Outdoor Unit : LED 14 times blink/ 13 times blink(AU*24LMAKL) Compressor Start-up error (Permanent Stop) ERROR CODE : No indication Detective Actuators: Detective details: On start-up the compressor, when detected rotor position is out of phase Outdoor Unit Main PCB Circuit with actual rotor position more than 90 degrees,the compressor stops.

  • Page 80: Trouble Shooting With No Error Code

    7-3 TROUBLE SHOOTING WITH NO ERROR CODE Forecast of Cause: Trouble shooting 21 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 81 Forecast of Cause: Trouble shooting 22 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 82 Forecast of Cause: Trouble shooting 23 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 terminals between Indoor Units. Or, check if there is an open cable connection.
  • Page 83 Forecast of Cause: Trouble shooting 24 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 84 Forecast of Cause : Trouble shooting 25 1. Abnormal installation (Indoor/ Outdoor) 2. Fan failure(Indoor/ Outdoor) Abnormal Noise 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 85: Service Parts Information

    7-4 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 Check if vibration noise by Is there open or loose connection Is there open or loose connection loose bolt or contact noise...
  • Page 86 Check Point 2 : Check Winding Resistance Check winding resistance of each terminal If the resistance value is 0 or infinite, replace Compressor. Resistance Value : 1.41 (For AU*24LUAR) 0.88 (For AU*30/ 36LUAS) 0.188 (For AU*45/ 54LUAS) at 20°C Check Point 3 : Replace Main PCB If the symptom does not change with above Check 1, 2, replace Main PCB.
  • Page 87 SERVICE PARTS INFORMATION 3 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 Terminal Resistance value Tester(+) Tester(-) 360k 720k...
  • Page 88 SERVICE PARTS INFORMATION 4 Outdoor unit Electronic Expansion Valve ( EEV ) Check Point 1 : Check Connections Check connection of connector (CN27) ( Loose connector or open cable ) EXPANSION VALVE COIL BROWN BLUE CN27 ORANGE YELLOW WHITE 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)
  • Page 89 SERVICE PARTS INFORMATION 5 Indoor Unit Fan Motor Check Point : AU*24LUAR Check each winding resistance of the motor If Resistance value is abnormal, replace motor. BLUE Read Wire Resistance value VIOLET White - Red Thermal protector 150°C 55.3 Red - Black Red - Violet 61.2...
  • Page 90 SERVICE PARTS INFORMATION 6 Outdoor Unit Fan Motor Check Point : AU*24LUAR Check each winding resistance of the motor If Resistance value is abnormal, replace motor. BLUE Read Wire Resistance value Thermal protector 150°C 54.7 White - Red Red - Black 96.3...

  • Page 91: Appending Data

    R410A CASSETTE type INVERTER 8 . APPENDING DATA...

  • Page 92: Capacity Table

    8. APPENDING DATA 8-1. CAPACITY TABLE MODEL : AU*24LUAR / AO*24LMAKL COOLING 20.8 Indoor temperature 18°CDB 21°CDB 23°CDB 26°CDB 27°CDB 29°CDB 30°CDB 32°CDB 12°CWB 15°CWB 16°CWB 18°CWB 19°CWB 21°CWB 22°CWB 23°CWB (°CDB) TC SHC PI SHC PI SHC PI SHC PI...
  • Page 93 MODEL : AU*30LUAS / AO*30LMAWL COOLING Indoor temperature 21°CDB 23°CDB 26°CDB 27°CDB 29°CDB 30°CDB 32°CDB 15°CWB 16°CWB 18°CWB 19°CWB 21°CWB 22°CWB 23°CWB (°CDB) 7.59 5.79 1.97 7.73 6.18 1.99 7.99 6.48 2.01 8.12 6.40 2.02 8.36 6.28 2.04 8.48 6.13 2.05 8.58 6.49...
  • Page 94 MODEL : AU*36LUAS / AO*36LMAWL COOLING Indoor temperature 21°CDB 23°CDB 26°CDB 27°CDB 29°CDB 30°CDB 32°CDB 15°CWB 16°CWB 18°CWB 19°CWB 21°CWB 22°CWB 23°CWB (°CDB) TC 10.91 7.80 1.88 11.18 8.45 1.89 11.72 9.02 1.93 12.01 8.96 1.95 12.58 8.82 1.98 12.87 8.75 2.00 13.14 9.36 2.01 9.83...
  • Page 95 MODEL : AU*45LUAS / AO*45LJBYL COOLING 28.3 Indoor temperature 21°CDB 23°CDB 26°CDB 27°CDB 29°CDB 30°CDB 32°CDB 15°CWB 16°CWB 18°CWB 19°CWB 21°CWB 22°CWB 23°CWB (°CDB) 10.59 9.16 2.06 11.13 9.92 2.08 12.07 11.22 2.11 12.55 11.25 2.13 13.50 11.29 2.17 13.99 11.31 2.19 14.49 12.20 2.20 12.64 10.01 2.45 12.97 10.90 2.46 13.63 11.68 2.49 13.95 11.60 2.51 14.57 11.38 2.53 14.86 11.25 2.54 15.12 12.01 2.55 11.59 9.12 3.05 11.86 9.99...
  • Page 96 MODEL : AUT54LUAS / AOT54LJBYL COOLING AFR 29.2 Indoor temperature 18°CDB 21°CDB 23°CDB 26°CDB 27°CDB 29°CDB 30°CDB 32°CDB 12°CWB 15°CWB 16°CWB 18°CWB 19°CWB 21°CWB 22°CWB 23°CWB (°CDB) TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI TC SHC PI...

  • Page 97: Operation Range

    8-2. OPERATION RANGE MODEL : AU*24LUAR / AO*24LMAKL Operation Range Mode Indoor humidity Outdoor temperature Indoor temperature Cooling About 80% or less 0 to 43°C 18 to 32°C Heating 16 to 30°C -10 to 24°C MODEL : AU*30/ 36LUAS / AO*30/ 36LMAWL...

  • Page 98: Electric Characteristics

    8-3. ELECTRIC CHARACTERISTICS AU*24LUAR AU*30LUAS Indoor unit Model Name AO*24LMAKL AO*30LMAWL Outdoor unit Voltage Power Supply Frequency Mode Cooling Heating Cooling Heating 12.5 12.4 Rated Value Current 11.1 10.5 2.86 2.84 Input 2.53 2.40 15.2 14.8 Max Operating Current 12.5 12.5...
  • Page 99 Indoor unit AUT30LUAS AUT36LUAS Model Name AOT30LMAWL AOT36LMAWL Outdoor unit Voltage Power Supply Frequency Mode Cooling Heating Cooling Heating Rated Value 12.0 11.9 Current 16.8 14.6 2.86 2.84 Input 4.01 3.49 14.6 14.6 17.5 17.5 Max Operating Current Starting Current Main Fuse (Circuit breaker) Current *1) Wiring Spec...

  • Page 100: Safety Device

    8-4. SAFETY DEVICE OUTDOOR UNIT AO*24LMAKL PROTECTION FORM FUSE 25A 250V (SIDE OF POWER SUPPLY TERMINAL) 3.15A 250V FUSE ON MAIN PCB 5A 250V FAN MOTOR PROTECTION THERMAL PROTECTOR 150±5°C OFF PRESSURE SWITCH 4.2MPa COMPRESSOR PROTECTION OFF 120±5°C THERMAL SWITCH ON 85±7°C PROTECTION FORM AO*30LMAWL...
  • Page 101 INDOOR UNIT PROTECTION FORM AU*24LUAR PCB FUSE CURRENT FUSE 3.15A 250V FAN MOTOR PROTECTION THERMAL PROTECTOR 150±5°C OFF TERMINAL FUSE THERMAL FUSE 102±2°C OFF PROTECTION FORM AU*30LUAS AU*36LUAS PCB FUSE 3.15A 250V 3.15A 250V FAN MOTOR PROTECTION THERMAL PROTECTOR 130±5°C OFF 130±5°C OFF...

  • Page 102: Function Setting

    8-5. FUNCTION SETTING 8-5-1 INDOOR UNIT INDOOR UNIT Auto restart validity/invalidity Room temperature correct coefficient Room temperature correct coefficient DIP SW Forbidden Ceiling height setting Rotary SW SW2 Indoor unit number setting Forbidden Jumper Wire Forbidden Forbidden SWITCH POSITION Indoor unit control circuit board 08-11...
  • Page 103 DIP SWITCH SETTING SW1-1. Auto restart setting Auto restart function can be selected by turning this switch ON/OFF. AUTO RESTART SETTING Factory setting) SW 1-1 SW state Invalidity Validity SW1-2, 1-3. Room temperature correct coefficient of heating. Decide the heating temperature correct coefficient vale of heating. TEMPERATURE CORRECTION Factory setting) SW state...

  • Page 104: Outdoor Unit (Ao*30/ 36Lmawl)

    8-5-2 OUTDOOR UNIT ( AO*30/ 36LMAWL) OUTDOOR UNIT Change current capacity DIP SW 1 No use (OFF) PUSH SW Pump down switch SWITCH POSITION Outdoor unit control circuit board DIP SW 1 PUSH SW 08-13...
  • Page 105 DIP SWITCH SETTING Current capacity setting DIP-SW1 CURRENT (MAX.) 18.0A 15.0A 13.5A 12.0A *1=36000BTU model's factory setting (AO*36LMAWL) *2=30000BTU model's factory setting (AO*30LMAWL) PUSH SWITCH SETTING SW2 setting Press the push-button switch, and "PUMP DOWN OPERATION" is starting. 08-14...

  • Page 106: Outdoor Unit (Ao*45/ 54Ljbyl)

    8-5-3 OUTDOOR UNIT ( AO*45/ 54LJBYL) OUTDOOR UNIT Change current capacity DIP SW 1 No use (OFF) PUSH SW Pump down switch SWITCH POSITION Outdoor unit control circuit board DIP SW 1 PUSH SW 08-15...
  • Page 107 DIP SWITCH SETTING Current capacity setting DIP-SW1 CURRENT (MAX.) 23.5A 20.0A 18.0A 15.5A *1=54000BTU model's factory setting (AO*54LJBYL) *2=45000BTU model's factory setting (AO*45LJBYL) PUSH SWITCH SETTING SW2 setting Press the push-button switch, and "PUMP DOWN OPERATION" is starting. 08-16...

  • Page 108: Wired Remote Controller

    8-5-4 WIRED REMOTE CONTROLLER Wired remote controller Dual remote controller setting Group control setting DIP SW Model setting Auto changeover setting Memory backup setting SWITCH POSITION Wired remote controller Front case (back side) DIP Switch 08-17...

  • Page 109: Group Control Setting

    DIP SWITCH SETTING 1. SW setting 1-1 Dual remote controller setting Set the remote controller DIP switch No.1 and 2 according to the following table. Factory setting) Number of Master unit Slave unit remote DIP-SW DIP-SW DIP-SW DIP-SW controller No.1 No.2 No.1 No.2...

  • Page 110: Installation Manual

    R410A CASSETTE type INVERTER 9 . INSTALLATION MANUAL...

  • Page 113: Installation Instruction

    STANDARD ACCESSORIES CONNECTION PIPE REQUIREMENT INSTALLATION PROCEDURE CONNECTING THE PIPING 3. CONNECTION SPLIT TYPE AIR CONDITIONER 2. OUTDOOR UNIT CONNECTION CORD AND (1) Install the outdoor unit wall cap (supplied with the optional installation The following accessories are supplied with the outdoor unit. Use them as PIPE CONNECTION PREPARATIONS CAUTION set or procured at the site) to the wall hole pipe.
  • Page 114 ELECTRICAL WIRING 1. CONNECTION DIAGRAM Fig. 12 POWER Fig. 9 WARNING Connection cord WARNING (1) Before starting work, check that power is not being sup- (1) The rated voltage of this product is 220-240 V A.C. plied to indoor unit and the outdoor unit. 50 Hz.
  • Page 115 ELECTRICAL REQUIREMENT INSTALLATION PROCEDURE CONNECTING THE PIPE 2. BENDING PIPES (4) When the flare nut is tightened properly by your hand, use a torque SPLIT TYPE AIR CONDITIONER wrench to finally tighten it. The pipes are shaped by your hands. Be careful not to collapse them. •...
  • Page 116 ELECTRICAL WIRING 1. CONNECTION DIAGRAMS (2) Valve cover removal. (5) Power supply cord and connection cord should be fixed with cable • Remove the one mounting screw. clip as shown in the figure. Power supply • Remove the valve cover by sliding upward. Fill in a gap at the entrance of the cords with insulation (seal).
  • Page 117 R410A CASSETTE type INVERTER 10 . REPLACEMENT PARTS...

  • Page 118: Replacement Parts ( For Outdoor Unit )

    1. REPLACEMENT PARTS (For OUTDOOR UNIT) 1-1 For AO*18/ 24LMAKL 1-1-1 PARTS LAYOUT DRAWING Active Filter Module Main PCB Heat Exchanger Accumulator Fan motor 4-way valve Solenoid PTC Thermistor Pressure SW Thermistor (Discharge temp.) Coil (Expansion valve)& Expansion valve Compressor 10-01...
  • Page 119 Thermo Holder& Thermistor (Outdoor Temp.) 2-way valve (Liquid) Thermistor 3-way valve (Heat exchanger temp.) (Gas) 10-02...

  • Page 120: Wiring

    1-1-2 WIRING (For AO*18/ 24LMAKL) Compressor wire CLAMP Solenoid wire Fan motor wire Fan capacitor wire BIND Thermistor (Discharge temp.) Thermistor (Compressor temp.) Thermistor (Heat exchanger temp.) Thermistor (Outdoor temp.) ENLARGED DETAIL PTC Thermistor Coil (Expansion valve) Pressure SW BIND (Thermistor (Outdoor temp.)) BIND (Thermistor (Heat exchanger temp.))

  • Page 121: Disassembly Process

    1-1-3 DISASSEMBLY PROCESS (For AO*18/ 24LMAKL) 1. TOP PANEL removal Remove the 5 mounting screws. Remove the TOP PANEL upward. TOP PANEL REAR VIEW 2. CONTROL BOX COVER removal Remove the 3 mounting screws. Remove the CONTROL BOX COVER and TERMINAL COVER. CONTROL BOX COVER TERMINAL COVER 10-04...
  • Page 122 3. MAIN PCB removal Remove the 4 mounting screws. Remove the connectors and cords. (Refer to VIEW -A,-B) Remove the MAIN PCB. Active Filter Module SCREW Twist 3 times or more Fan motor Pressure SW (Red) Solenoid (White) White Black Coil(Expansion valve) (Red) Compressor...
  • Page 123 4. FRONT PANEL removal Remove the 4 mounting screws. Remove the FRONT PANEL by sliding upward. Hook (2 places) Replaceable Component Compressor Accumulator Solenoid Thermistor (Discharge temp.) Thermistor (Outdoor temp.) PTC Thermistor Pressure SW Coil (Expansion valve) FRONT PANEL Hook Fan motor &...
  • Page 124 6. RIGHT PANEL removal Remove the 9 mounting screws. Hook Hook Hook Remove the RIGHT PANEL by sliding upward. RIGHT PANEL Replaceable Component Thermistor (Heat exchanger temp.) 10-07...

  • Page 125: For Ao*30/ 36Lmawl

    1-2 For AO*30/ 36LMAWL 1-2-1 PARTS LAYOUT DRAWING Active Filter Module Heat Exchanger Thermistor (Heat sink) Main PCB Fan motor Filter PCB 4-way valve Accumulator Solenoid Thermistor (Compressor temp.) Compressor Choke coil Thermistor (Discharge temp.) VIEW - A 10-08...
  • Page 126 Thermo Holder& Thermistor (Outdoor Temp.) Check valve Pressure SW AOU18 2-way valve (Liquid) Coil (Expansion valve)& AOU24/ 36 Expansion valve 3-way valve (Liquid) Thermistor (Heat exchanger temp.) 3-way valve (Gas) 10-09...

  • Page 127: Wiring

    1-2-2 WIRING (For AO*30/ 36LMAWL) CLAMP & BIND Thermistor (Discharge temp.) wire Thermistor (Outdoor temp.) wire Thermistor (Compressor temp.) wire Thermistor (Heat exchanger temp.) wire Coil (Expansion valve) wire Pressure SW wire CLAMP (Compressor wire) CLAMP (Fan motor wire) CLAMP (Solenoid wire) BIND (Compressor wire...

  • Page 128: Disassembly Process

    1-2-3 DISASSEMBLY PROCESS (For AO*30/ 36LMAWL) 1. SERVICE PANEL removal Remove the 2 mounting screws. Remove the SERVICE PANEL by sliding downward. Replaceable Component Compressor Accumulator 4-way valve Solenoid Thermistor (Compressor temp.) Thermistor (Discharge temp.) Hook Thermistor (Outdoor temp.) (3 places) Thermistor (Heat exchanger temp.) Pressure SW Coil (Expansion valve)
  • Page 129 3. INVERTER BOX removal Remove the 4 mounting screws. Remove the connectors and cords. (Refer to VIEW -C,-D) Remove the INVERTER BOX upward. REAR VIEW FRONT VIEW Remove power supply & Remove the connectors Remove the connectors Connection cord. Terminal VIEW - C Choke coil VIEW - D...
  • Page 130 Remove the 1 mounting screw. Remove the INVERTER BOX COVER upward. INVERTER BOX COVER Hook (2 places) Remove the connector and cords. Twist W6 and W7 Twist W4 and W5 4 times or more. 2 times or more. CN1 (Black/Brown/Red) W7 (White) W5 (White) W4 (Black)
  • Page 131 Remove the connector and cords. Twist 4 times or more 2 turn the Wire this way " - " (Black) " L2 " (Brown) Thermistor (Heat sink) " + " (Red) " L1 " (White) CN407 " P " (Yellow) "...
  • Page 132 Remove the 6 mounting screws. Remove the INVERTER BOX A upward. INVERTER BOX A REAR VIEW LEFT SIDE VIEW Filter PCB Main PCB Remove the 2 mounting screws. Remove the 1 mounting screw. Remove the Filter PCB upward. Remove the Main PCB upward. Hook (3 places) Hook (2 places) Main PCB...

  • Page 133: Assembly Process Of Inverter Unit

    1-2-4 ASSEMBLY PROCESS of INVERTER UNIT (For AO*30/ 36LMAWL) 1. FILTER PCB As shown in Fig.1, assemble FILTER PCB to INVERTER BOX A. As shown in Fig.2, pull out the wires of FILTER PCB. Hook (2 places) Screw (2 places) INVERTER BOX A FILTER PCB Fig.1...
  • Page 134 As shown in Fig.4, pull out the wires. W16 (Red) W17 (Black) Thermistor (Heat sink) W303 (Black) W304 (White) W305 (Red) CN407 Fig. 4 As shown in Fig.5, pull out the wires and fix them. Hook (2 places) W12 (Yellow) W13 (Blue) W17 (Black) W16 (Red)
  • Page 135 As shown in Fig.6, pull out the wires. W200 (Red) Fig. 6 As shown in Fig.7, pull out the wires. W200 (Red) HYIC1 CN1 wire with connector Fig. 7 Don't come in contact with HYIC1. DETAIL - A 10-18...
  • Page 136 As shown in Fig.8, connect wires. CN34 (Yellow) CN1 (White) Fig. 8 As shown in Fig.9, connect wires. W21 (Orange) W22 (Orange) PTC Thermistor Through this hole. TM101 (Black line) TM102 (White line) Fig. 9 10-19...
  • Page 137 As shown in Fig.10, fix the wire to INVERTER BOX A. Pull out the wire Hook (3 places) Thermistor (Heat sink) through this opening CN407 Fig. 10 As shown in the figures, set wire with connector and bind it to INVERTER BOX A. Bind wire to INVERTER BOX A.

  • Page 138: For Ao*45/ 54Ljbyl

    1-3 For AO*45/ 54LJBYL 1-3-1 PARTS LAYOUT DRAWING Active Filter Module Thermistor (Heat sink) Heat Exchanger D,Power (Bridge) Main PCB Filter PCB Fan motor Choke coil 4-way valve Thermistor (Discharge temp.) Solenoid Accumulator Thermistor (Compressor temp.) Compressor 10-21...
  • Page 139 Thermo Holder& Thermistor (Outdoor Temp.) Pressure SW Check valve Coil (Expansion valve)& Expansion valve 3-way valve (Liquid) 3-way valve (Gas) Thermistor (Heat exchanger temp.) 10-22...

  • Page 140: Wiring

    1-3-2 WIRING (For AO*45/ 54LJBYL) CLAMP (Compressor wire) BIND Don't use this (Thermistor (Discharge temp.)) CABLE CLIP. (Thermistor (Compressor temp.)) (Thermistor (Heat exchanger temp.)) (Coil (Expansion valve)) CLAMP (Compressor wire) CLAMP & BIND Thermistor (Discharge temp.) wire Thermistor (Outdoor temp.) wire Thermistor (Compressor temp.) wire Thermistor (Heat exchanger temp.) wire Coil (Expansion valve) wire...
  • Page 141 Thermistor(Outdoor temp.) Coil (Expansion valve) CLAMP with U PIPE (Thermistor (Heat exchanger temp.)) (Coil (Expansion valve)) Thermistor (Heat exchanger temp.) ENLARGED DETAIL 10-24...

  • Page 142: Disassembly Process

    1-3-3 DISASSEMBLY PROCESS (AO*45/ 54LJBYL) 1. SERVICE PANEL removal Remove the 2 mounting screws. Remove the SERVICE PANEL by sliding downward. Hook (3 places) Replaceable Component Compressor Accumulator 4-way valve Solenoid Thermistor (Compressor temp.) Thermistor (Discharge temp.) Thermistor (Outdoor temp.) Thermistor (Heat exchanger temp.) Pressure SW Coil (Expansion valve)
  • Page 143 2. TOP PANEL removal Remove the 7 mounting screws. Remove the TOP PANEL upward. FRONT VIEW REAR VIEW 10-26...
  • Page 144 3. INVERTER BOX removal Remove the 4 mounting screws. Remove the connectors and cords. (Refer to VIEW -C,-D) Remove the INVERTER BOX upward. REAR VIEW FRONT VIEW Remove power supply & Remove the connectors Remove the connectors Connection cord. Terminal VIEW - C Choke coil VIEW - D...
  • Page 145 Remove the 1 mounting screw. Remove the INVERTER BOX COVER upward. INVERTER BOX COVER Hook (2 places) Remove the connector and cords. Twist W6 and W7 2 times or more. W1 (Black) W6 (Black) W7 (White) W2 (White) W200 (Red) VIEW - E 10-28...
  • Page 146 Remove the connector and cords. " " (White) D,Power (Bridge) " " (Gray) " L2 " (Brown) " - " (Black) " L1 " (White) " + " (Red) Thermistor (Heat sink) CN407 BIND " P " (Yellow) " N1 " (Blue) "P"...
  • Page 147 Remove the 6 mounting screws. Remove the INVERTER BOX A upward. INVERTER BOX A REAR VIEW LEFT SIDE VIEW Filter PCB Main PCB Remove the 2 mounting screws. Remove the 1 mounting screw. Remove the Filter PCB upward. Remove the Main PCB upward. Hook (3 places) Hook (2 places) Main PCB...

  • Page 148: Assembly Process Of Inverter Unit

    1-3-4 ASSEMBLY PROCESS of INVERTER UNIT (For AO*45/ 54LJBYL) 1. FILTER PCB As shown in Fig.1, assemble FILTER PCB to INVERTER BOX A. As shown in Fig.2, pull out the wires of FILTER PCB. Hook (2 places) Screw (2 places) INVERTER BOX A FILTER PCB Fig.1...
  • Page 149 As shown in Fig.4, pull out the wires. Thermistor (Heat sink) CN407 W303 (Black) W304 (White) W305 (Red) Fig. 4 As shown in Fig.5, pull out the wires and fix them. W303 (Black) W304 (White) Hook (2 places) W305 (Red) W107 (White) W108 (Violet) CN407...
  • Page 150 As shown in Fig.6, pull out the wires. W200 (Red) CN1 wire with connector Fig. 6 HYIC1 Don't come in contact with HYIC1. VIEW - A As shown in Fig.7, connect wires. CN34 (Yellow) CN1 (White) Fig. 7 10-33...
  • Page 151 As shown in Fig.8, connect wires. W108 (Violet) W107 (White) Gray line Make White line on Black line Twist 5 times or more. Through this hole. TM101 (Black line) TM102 (White line) Fig. 8 10-34...
  • Page 152 As shown in Fig.9, fix the wire to INVERTER BOX A. Pull out the wire Hook (3 places) through this opening Thermistor (Heat sink) CN407 Fig. 9 As shown in the figures, set wire with connector and bind it to INVERTER BOX A. Bind wire to INVERTER BOX A.

  • Page 153: Replacement Parts ( For Indoor Unit )

    2. REPLACEMENT PARTS (For INDOOR UNIT) 2-1 PARTS LAYOUT DRAWING 1. INTAKE GRILLE removal Push the INTAKE GRILLE pushbuttons (2 places). Open the INTAKE GRILLE PUSH OPEN INTAKE GRILLE PUSH Pushbotton (2 places) Remove the GRILLE hinge wire. Pull up while pressing the B section. Part A detail view GRILLE hinge wire Part B section view...
  • Page 154 2. FILTER removal Remove the FILTER. Hook FILTER (3 places) 3. CONTROL BOX COVER removal Remove the 2 mounting boits. Remove the CONTROL BOX COVER upward. CONTROL BOX COVER DETAIL A (3 places) MOVE DETAIL B 10-37...
  • Page 155 4. Wiring and Parts layout Thermistor(Room temp.) Terminal-3P HOOK Capacitor,Plastic Controller PCB Terminal-3P Power Supply PCB BIND (Wire with connector (For Terminal)) (Wire with connector (For Fuse in Terminal)) (PWB wire (For Power Supply PCB)) (Wire with connector (For Float SW)) (Wire with connector (For Remocon)) Capacitor,elec (For AU*36/ 45/ 54LUAS) (The wire must not pass the upper part...
  • Page 156 5. PANEL FRAME removal Pull up the corner section (A) of the PANEL FRAME as shown in figure (4 locations). PANEL FRAME Part A detail view Pull up in the direction of the arrow while holding down the C section of figure (4 locations). Part B detail view PANEL FRAME PANEL BASE...
  • Page 157 6. PANEL BASE removal Remove the 4 mounting bolts. Remove the PANEL BASE upward. PANEL BASE 7. CONTROL UNIT removal Remove the 3 mounting bolts and 1 mouting screw. Remove the CONTROL UNIT upward. BOLT (3places) SCREW CONTROL UNIT 10-40...
  • Page 158 8. DRAIN PAN removal Remove the DRAIN PAN ASSY. DRAIN PAN ASSY 10-41...
  • Page 159 9. TURBO FAN removal Remove the M8 NUT and Washer(TURBO FAN). Remove the TURBO FAN ASSY. For AU*24LUAR M8 NUT Washer(TURBO FAN) TURBO FAN ASSY The M8 special NUT should be tightened with a torque of 1.96 - 7.84 N m.
  • Page 160 10. FAN MOTOR removal For AU*24LUAR Remove the 3 mounting nuts. Remove the FAN MOTOR ASSY. Special NUT M6 (3 places) FAN MOTOR ASSY Rubber (Vibration-proof) -A (3 places) Rubber (Vibration-proof) -B (3 places) For AU*36/ 36/ 45/ 54LUAS Remove the 4 mounting nuts.
  • Page 161 11. DRAIN PUMP removal Remove the 2 mounting screws. Remove the DRAIN PUMP UNIT. DRAIN PUMP UNIT DRAIN HOSE 10-44...
  • Page 162 1116,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan Apr. 2006 Printed in Japan...

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