1. Manuals
  2. Brands
  3. Fujitsu Manuals
  4. Air Conditioner
  5. ARA12LATN
  6. Service instruction

Fujitsu ARA12LATN Service Instruction

Duct type inverter indoor / outdoor units
Hide thumbs
Table of Contents

Advertisement

Quick Links

SERVICE
INSTRUCTION
R410A
SPLIT TYPE
ROOM AIR CONDITIONER
DUCT
INVERTER
Models Indoor unit Outdoor unit
AR*A12LATN
AR*A14LATN
AR*A18LATN
AR*A24LATN
AR*A36LATN
AR*A45LATN
type
AO*A12LACL
AO*A14LACL
AO*A18LACL
AO*A24LACL
AO*A36LATL
AO*A45LATL

Advertisement

Table of Contents
loading

Related Manuals for Fujitsu ARA12LATN

Summary of Contents for Fujitsu ARA12LATN

  • Page 1 SPLIT TYPE ROOM AIR CONDITIONER DUCT type INVERTER SERVICE INSTRUCTION Models Indoor unit Outdoor unit AO*A12LACL AR*A12LATN AO*A14LACL AR*A14LATN AR*A18LATN AO*A18LACL AR*A24LATN AO*A24LACL AR*A36LATN AO*A36LATL AR*A45LATN AO*A45LATL 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: Specifications

    R410A DUCT type INVERTER 1 . SPECIFICATIONS...
  • Page 5 1. SPECIFICATIONS FOR INDOOR UNIT DUCTED MODEL Type INVERTER HEATPUMP Model name AR A12LATN AR A14LATN Power source 230V 50Hz Available voltage range 198-264V 50Hz Cooling European energy label Heating Rated BTU/h 11950 14650 Cooling 0.9 - 4.4 0.9 - 5.4 Min.-Max.
  • Page 6 DUCTED MODEL Type INVERTER HEATPUMP Model name AR A18LATN Power source 230V 50Hz Available voltage range 198-264V 50Hz Cooling European energy label Heating Rated BTU/h 17700 Cooling 0.9 - 5.9 Min-Max BTU/h 3100 - 20100 Capacity Rated BTU/h 20500 Heating 0.9 - 7.5 Min-Max BTU/h...
  • Page 7 DUCTED MODEL Type INVERTER HEATPUMP Model name AR A24LATN Power source 230V 50Hz Available voltage range 198-264V 50Hz Cooling European energy label Heating Rated BTU/h 24200 Cooling 0.9 - 8.0 Min-Max BTU/h 3100 - 27300 Capacity Rated BTU/h 27300 Heating 0.9 - 9.1 Min-Max BTU/h...
  • Page 8 DUCTED MODEL Type INVERTER HEATPUMP Model name AR A36LATN AR A45LATN Power source 230V 50Hz Available voltage range 198-264V 50Hz Cooling European energy label Heating 10.0 12.5 Rated BTU/h 34100 42700 Cooling 3.8 - 11.2 4.0 - 14.0 Min.-Max. BTU/h 13000 - 38200 13700 - 47800 Capacity...

  • Page 9: Dimensions

    2. SPECIFICATIONS FOR OUTDOOR UNIT Type INVERTER HEATPUMP Model name AO A12LACL AO A14LACL Power source 230V 50Hz Available voltage range 198-264V 50Hz Starting current Cooling 1780 1910 Airflow rate Heating 1630 1740 Type × Q'ty Propeller × 1 Motor output Cooling Sound pressure level dB(A)
  • Page 10 Type INVERTER HEATPUMP Model name AO A18LACL AO A24LACL Power source 230V 50Hz Available voltage range 198-264V 50Hz Starting currente 10.0 Cooling 2000 2470 Airflow rate Heating 1910 2470 Type × Q'ty Propeller × 1 Motor output Cooling Sound pressure level dB(A) Heating 546 ×...
  • Page 11 Type INVERTER HEATPUMP Model name AO A36LATL AO A45LATL Power source 230V 50Hz Available voltage range 198-264V 50Hz Starting current 15.0 15.0 Cooling 6600 6600 Airflow rate Heating 6600 6600 Type × Q'ty Propeller × 2 Motor output 103 × 2 103 ×...

  • Page 12: Dimensions

    R410A DUCT type INVERTER 2 . DIMENSIONS...
  • Page 13 2. DIMENSIONS MODEL : AR*A12LATN / AO*A12LACL AR*A14LATN / AO*A14LACL (Unit : mm) Top view 85 75 Front view Side view Refrigerant piping flare connection (Gas) Refrigerant piping flare connection (Liquid) Drain piping connection (Unit : mm) Front view Side view Air flow Bottom view 02-01...
  • Page 14 MODEL : AR*A18LATN / AO*A18LACL (Unit : mm) Top view 85 75 Front view Side view Refrigerant piping flare connection (Gas) Refrigerant piping flare connection (Liquid) Drain piping connection (Unit : mm) Front view Side view Air flow Bottom view 02-02...
  • Page 15 MODEL : AR*A24LATN / AO*A24LACL (Unit : mm) Front view Side view (L) Side view (R) Top view Refrigerant piping flare connection (Gas) Refrigerant piping flare connection (Liquid) Drain piping connection Drain piping connection with cap. Rear view Knock out hole for fresh air. (Unit : mm) Front view Side view...
  • Page 16 MODEL : AR*A36LATN / AO*A36LATL AR*A45LATN / AO*A45LATL (Unit : mm) Front view Side view (L) Side view (R) Top view Refrigerant piping flare connection (Gas) Refrigerant piping flare connection (Liquid) Drain piping connection Drain piping connection with cap. Rear view Knock out hole for fresh air.

  • Page 17: Refrigerant System Diagram

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

  • Page 18: Refrigerant Circuit

    3. REFRIGERANT CIRCUIT MODEL : AR*A12LATN / AO*A12LACL Outdoor Unit Indoor Unit Refrigerant Pipe Ø9.52mm(3/8") MUFFLER 3-way VALVE MUFFLER 4-Way valve CONDENSER EVAPOLATOR ACCUMULATOR COMPRESSOR EXPANSION 2-way STRAINER STRAINER VALVE VALVE Refrigerant Pipe Ø6.35mm(1/4") THERMISTOR(COMPRESSOR TEMP.) THERMISTOR(ROOM TEMP.) THERMISTOR(PIPE TEMP.) THERMISTOR(DISCHARGE TEMP.) THERMISTOR(HEAT EXCHANGER MED TEMP.) THERMISTOR(HEAT EXCHANGER OUT TEMP.)

  • Page 19: Outdoor Unit

    MODEL : AR*A14LATN / AO*A14LACL AR*A18LATN / AO*A18LACL Outdoor Unit Indoor Unit Refrigerant Pipe Ø12.7mm(1/2") MUFFLER 3-way VALVE MUFFLER 4-Way valve CONDENSER EVAPOLATOR ACCUMULATOR COMPRESSOR EXPANSION 2-way STRAINER STRAINER VALVE VALVE Refrigerant Pipe Ø6.35mm(1/4") THERMISTOR(COMPRESSOR TEMP.) THERMISTOR(ROOM TEMP.) THERMISTOR(PIPE TEMP.) THERMISTOR(DISCHARGE TEMP.) THERMISTOR(HEAT EXCHANGER MED TEMP.) THERMISTOR(HEAT EXCHANGER OUT TEMP.)
  • Page 20 MODEL : AR*A24LATN / AO*A24LACL Outdoor Unit Indoor Unit Refrigerant Pipe Ø15.88mm(5/8") MUFFLER 3-way VALVE MUFFLER 4-Way valve CONDENSER EVAPOLATOR ACCUMULATOR COMPRESSOR EXPANSION 2-way STRAINER STRAINER VALVE VALVE Refrigerant Pipe Ø6.35mm(1/4") THERMISTOR(COMPRESSOR TEMP.) THERMISTOR(ROOM TEMP.) THERMISTOR(DISCHARGE TEMP.) THERMISTOR(PIPE TEMP.) THERMISTOR(HEAT EXCHANGER MED TEMP.) THERMISTOR(HEAT EXCHANGER OUT TEMP.) COOL THERMISTOR(OUTDOOR TEMP.)
  • Page 21 MODEL : AR*30/ 36LUAN / AO*30/ 36LMAWL Outdoor Unit Indoor Unit PRESSURE Refrigerant Pipe CHECK VALVE Ø15.88mm(5/8") Charging Valve HIGH PRESSURE SWITCH STRAINER 4-Way valve ACCUMULATOR CONDENSER EVAPOLATOR COMPRESSOR EXPANSION VALVE STRAINER STRAINER Refrigerant Pipe Ø9.52mm(3/8") Charging Valve THERMISTOR(COMPRESSOR TEMP.) THERMISTOR(ROOM TEMP.) THERMISTOR(PIPE TEMP.) THERMISTOR(DISCHARGE TEMP.)

  • Page 22: Circuit Diagram

    R410A DUCT type INVERTER 4 . CIRCUIT DIAGRAM...
  • Page 23 4. CIRCUIT DIAGRAM MODEL : AR*A12/ 14/ 18LATN 04-01...
  • Page 24 MODEL : AR*A24/ 36/ 45LATN COIL 04-02...
  • Page 25 MODEL : AO*A12/ 14/ 18/ 24LACL 04-03...
  • Page 26 MODEL : AO*A36/ 45LATL 04-04...

  • Page 27: Description Of Each Control Operation

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

  • Page 28: Cooling Operation

    5-1. COOLING OPERATION 5-1-1 COOLING CAPACITY CONTROL A sensor (room temperature thermistor) built in the indoor unit will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation frequency of the compressor. * If the room temperature is 2 degC higher than a set temperature, the compressor operation frequency will attain to maximum performance.

  • Page 29: Heating Operation

    5-2. HEATING OPERATION 5-2-1 HEATING CAPACITY CONTROL A sensor (room temperature thermistor) built in the indoor unit will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation frequency of the compressor. * If the room temperature is lower 3 degC than a set temperature, the compressor operation frequency will attain to maximum performance.

  • Page 30: Dry Operation

    5-3. DRY OPERATION 5-3-1 INDOOR UNIT CONTROL 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 Fig 3. ( Table 3 : Compressor frequency ) Operating frequency AR*A12LATN 34Hz...

  • Page 31: 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, DRY 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 32: Indoor Fan Control

    5-5. INDOOR FAN CONTROL 1. Fan speed ( Table 5 : Indoor Fan Speed ) AR*A12LATN AR*A14LATN Operation mode Air flow mode Operation mode Air flow mode Speed (rpm) Speed (rpm) Cooling Cooling 1040 Heating Heating Quiet Quiet Auto Auto Monitoring Monitoring S- Lo...
  • Page 33 3. COOLING OPERATION Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Figure 6. On the other hand, if switched in [HIGH] [QUIET], the indoor motor will run at a constant airflow of [COOL] operation modes QUIET, LOW, MED, HIGH, as shown in Table 5.
  • Page 34 5. COOL AIR PREVENTION CONTROL (Heating mode) The maximum value of the indoor fan speed is set as shown in Figure 8, based on the detected temperature by the indoor heat exchanger sensor on heating mode. ( Fig.8 : Cool Air Prevention Control ) (1) Fan mode : HIGH (2) Fan mode : MED, LOW, QUIET Indoor heat exchanger...

  • Page 35: Outdoor Fan Control

    5-6. OUTDOOR FAN CONTROL 1. Outdoor Fan Motor 1-1. For AR*A12/ 14/ 18/ 24LATN Following table shows the fan speed of the outdoor unit. Table 6 : Fan speed of the outdoor unit Outdoor temperature Cooling Over than 12°C 860/ 820/ 770/ 670/ 500 rpm 500 rpm AR*A12LATN Less than 12°C...
  • Page 36 1-2. For AR*A36/ 45LATN Following table shows the fan speed of the outdoor unit. Table 8 : Fan speed of the outdoor unit Cooling Heating Upper fan 850/ 780/ 520/ 400/ 350/ 300/ 280 rpm 850/ 780/ 350/ 200/ 170/ 150 rpm AR*A36LATN AR*A45LATN Lower fan...

  • Page 37: Compressor Control

    5-7. COMPRESSOR CONTROL 1. OPERATION FREQUENCY RANGE The operation frequency of the compressor is different based on the operation mode as shown in Table 9. (Table 9 : Compressor Operation Frequency Range) Cooling Heating AR*A12LATN 18Hz 80Hz 18Hz 120Hz 34Hz AR*A14LATN 18Hz 113Hz...

  • Page 38: Timer Operation Control

    5-8. TIMER OPERATION CONTROL 5-8-1 Wired Remote Controller AR-6TC1 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 39 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 40: Electronic Expansion Valve Control

    5-9. 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, the indoor heat exchanger sensor, the outdoor heat exchanger sensor, and the outdoor temperature sensor.

  • Page 41: 4-Way Valve Extension Select

    5-12. 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. 5-13. AUTO RESTART When the power was interrupted by a power failure, etc.

  • Page 42: Fresh Air Control

    5-16. FRESH AIR CONTROL The fan motor for Fresh Air is operated in synchronization with the indoor fan operation as shown in Figure 11. (Fig.11 : Fresh air control) Operation Fan motor (Indoor unit) Stop Operation Fan motor (for Fresh Air) Stop 5-17.

  • Page 43: Defrost Operation Control

    5-18. 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 11. (Table 11 : Condition of starting Defrost Operation) 1st time defrosting after starting operation Compressor contiguous Below 10 min.
  • Page 44 3. Defrost Flow Chart The defrosting shall proceed by the integrating operation time and outdoor heat exchanger emperature as follows. Heating operation start : Compressor ON (Not defrosted for 10 minutes) (In case of 1st defrost) (In case of 2nd and later defrost) Compressor integrating Compressor integrating Compressor integrating...

  • Page 45: Off Defrost Operation Control

    5-19. OFF DEFROST OPERATION 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 46: Economy Operation

    5-20. ECONOMY OPERATION At the maximum output, ECONOMY OPERATION is approximately 70% of normal air conditioner operation for cooling and heating. When ECONOMY OPERATION is performed during the cooling mode,dehumidification is improved. This function is especially convenient when you want to remove the humidity in the room without significantly lowering the room temperature.

  • Page 47: Various Protections

    5-21. VARIOUS PROTECTIONS 1. DISCHARGE GAS TEMPERATURE OVER RISE PREVENTION CONTROL 1-1. For AR*A12/ 14/ 18/ 24LATN The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas temperature. When the discharge temperature becomes higher than 104°C, the compressor frequency is decreased 20 Hz, and it continues to decrease the frequency for 20 Hz every 120 seconds until the temperature becomes lower than 101°C.
  • Page 48 2-2. For AR*A36/ 45LATN (Table 13-2 : Current Release Operation Value / Release Value) [ Heating ] Outdoor unit fan speed (UP / LO) 850/ 780 rpm 200/ 200 rpm 780/ 780 rpm 170/ 170 rpm 350/ 350 rpm 150/ 150 rpm 13.0A / 12.5A 13.0A / 12.5A T0 >...

  • Page 49: Forced Cooling Operation

    4. COOLING PRESSURE OVER RISE PROTECTION On cooling mode, the compressor frequency is controlled as following based on the detection value of the outdoor heat exchanger temperature sensor. (Fig.13 : Cooling Pressure Over Rise Protection Control) Outdoor heat exchange temperature Compressor is OFF 67°C (AR*A12 - 24LATN)

  • Page 50: Refrigerant Caution -R410A

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

  • Page 51: 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 52: 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 53: 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 54: 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 55: 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 56 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 57 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 58: 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 59: Trouble Shooting

    R410A DUCT type INVERTER 7 . TROUBLE SHOOTING...

  • Page 60: Error Display

    7. TROUBLESHOOTING 7-1 ERROR DISPLAY 7-1-1 WIRED REMOTE CONTROLLER DISPLAY 1. SELF - DIAGNOSIS When "EE" in Temperature Display is displayed, inspection of the air conditioning system is necessary. Please consult authoilzed servise personnel. Unit number (usually 0) Error code SU MO TU WE TH FR SA ex.
  • Page 61 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 simultaneously for 3 seconds or more to start the self-diagnosis. Error code Error history number SU MO TU WE TH FR SA...

  • Page 62: Outdoor Unit Display

    7-1-2 OUTDOOR UNIT DISPLAY 1. ERROR DISPLAY 1-1. For AR*A12L/ 14L/ 18L/ 24L (AO*A12L/ 14L/ 18L/ 24L) Trouble Error contents LED Flashing Pattern shooting Discharge temperature error Continuously lighting IPM error 0.5sec ON / 0.5sec OFF CT error 2sec ON / 2sec OFF Compressor rotor location cannot detect 18,30 0.1sec ON / 2sec OFF...

  • Page 63: Trouble Shooting With Error Code

    7-2 TROUBLE SHOOTING WITH ERROR CODE Trouble shooting 1 Indicate or Display: INDOOR UNIT Error Method: Outdoor Unit : No indication Communication Error ERROR CODE : E : 00 (Indoor unit Remote control) Detective details: Detective Actuators: When the indoor unit cannot receive the signal from Wired Remote Indoor unit controller PCB circuit more than 10seconds after power ON, or the indoor unit cannot receive Wired Remote Control...
  • Page 64 Indicate or Display: Indicate or Display: Trouble shooting 2 OUTDOOR UNIT Error Method: Outdoor Unit : No indication Communication Error ERROR CODE : E : 01 (Serial Reverse Transfer Error) Detective details: Detective Actuators: When the indoor unit cannot receive the serial signal from Outdoor unit Outdoor Unit Main PCB Circuit more than 10seconds, Active Filter Module...
  • Page 65 Indicate or Display: Trouble shooting 3 INDOOR UNIT Error Method: Outdoor Unit : No indication INDOOR UNIT ERROR CODE : E : 02 Room Temperature Sensor Error Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit When Room Temperature Thermistor open or short-circuit is detected at power ON.
  • Page 66 Indicate or Display: Trouble shooting 4 INDOOR UNIT Error Method: Outdoor Unit : No indication INDOOR UNIT Indoor Heat Exchanger Temperature ERROR CODE : E : 04 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 67 Indicate or Display: Trouble shooting 5 OUTDOOR UNIT Error Method: Outdoor Unit (AR*A12L- 24L) : LED 0.1sec ON/ 0.1sec OFF (AR*A36L/ 45L) : LED 3 times blink Outdoor Heat Exchanger Temperature ERROR CODE : E : 06 Sensor (Outlet) Error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit...
  • Page 68 Indicate or Display: Trouble shooting 7 OUTDOOR UNIT Error Method: Outdoor Unit (AR*A12L- 24L) : LED 0.1sec ON/ 0.1sec OFF INDOOR UNIT (AR*A36L/ 45L) : 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...
  • Page 69 Indicate or Display: Trouble shooting 8 OUTDOOR UNIT Error Method: Outdoor Unit (AR*A12L- 24L) : LED 0.1sec ON/ 0.1sec OFF INDOOR UNIT (AR*A36L/ 45L) : 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...
  • Page 70 Indicate or Display: Trouble shooting 9 OUTDOOR UNIT Error Method: Outdoor Unit (AR*A12L- 24L) : LED continuously lighting INDOOR UNIT (AR*A36L/ 45L) : LED 6 times blink Discharge temperature error ERROR CODE : E : 0F Detective details: Detective Actuators: When the discharge temperature becomes higher than 110°C Outdoor Unit Main PCB Circuit ( AR*A36L and 45L is 115°C ), the compressor stops.
  • Page 71 Trouble shooting 10 Indicate or Display: Indicate or Display: INDOOR UNIT Error Method: Outdoor Unit : No indication Indoor EEPROM abnormal ERROR CODE : E : 11 (Model No.) Detective details: Detective Actuators: Indoor Unit Controller PCB circuit When the model information being read from EEPROM has an apparent error.
  • Page 72 Indicate or Display: Trouble shooting 11 INDOOR UNIT Error Method: 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 73 Indicate or Display: Trouble shooting 12 Indicate or Display: INDOOR UNIT Error Method: Outdoor Unit (AR*A12L- 24L) : No indication (AR*A36L/ 45L) : LED 4 times blink Outdoor Communication Signal Error (Forward Transfer Signal Error) ERROR CODE : E : 13 Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit...
  • Page 74 Indicate or Display: Trouble shooting 13 Outdoor Unit (AR*A12L- 24L) : LED 0.1sec ON/ 0.1sec OFF OUTDOOR UNIT Error Method: (AR*A36L/ 45L) : 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 75 ( For AR*A36L/ 45L ) Indicate or Display: Trouble shooting 14 OUTDOOR UNIT Error Method: Outdoor Unit : LED 9 times blink INDOOR UNIT ERROR CODE : E : 16 Pressure Switch Error Detective details: Detective Actuators: Outdoor Unit Main PCB Circuit When pressure switch open is detected in 10 seconds after the power is turned on.
  • Page 76 Indicate or Display: Trouble shooting 15 Outdoor Unit (AR*A12L- 24L) : LED 0.5sec ON/ 0.5sec OFF OUTDOOR UNIT Error Method: (AR*A36L/ 45L) : LED 12 times blink IPM error (Permanent Stop) ERROR CODE : E : 17 Detective details: Detective Actuators: When more than normal operating current to IPM in Main PCB flows, Outdoor Unit Main PCB Circuit the compressor stops.
  • Page 77 Indicate or Display: Trouble shooting 16 Outdoor Unit (AR*A12L- 24L) : LED 2sec ON/ 2sec OFF OUTDOOR UNIT Error Method: (AR*A36L/ 45L) : No indication CT error ERROR CODE : E : 18 Detective details: Detective Actuators: When Input Current Sensor has detected 0A, while Inverter Compressor is Outdoor Unit Main PCB Circuit operating at higher than 56Hz(for AR*A12L-24L) or 50Hz(for AR*A36L/ 45L), Outdoor Unit Filter PCB Circuit...
  • Page 78 ( For AR*A36L/ 45L ) Indicate or Display: Trouble shooting 17 OUTDOOR UNIT Error Method: Outdoor Unit : No indication INDOOR UNIT ERROR CODE : E : 19 Active Filter Module (AFM) error 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 79 Trouble shooting 18 Indicate or Display: OUTDOOR UNIT Error Method: Outdoor Unit (AR*A12L- 24L) : LED 0.1sec ON/ 2sec OFF (AR*A36L/ 45L) : LED 13 times blink 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 80 Indicate or Display: Trouble shooting 19 OUTDOOR UNIT Error Method: Outdoor Unit (AR*A12L- 24L) : LED 5sec ON/ 5sec OFF (AR*A36L/ 45L) : LED 15 times blink (Upper fan) Outdoor Unit Fan Motor Error LED 16 times blink (Lower fan) ERROR CODE : E : 1b Detective Actuators: Detective details:...
  • Page 81 Indicate or Display: Trouble shooting 20 OUTDOOR UNIT Error Method: Outdoor Unit : No indication INDOOR UNIT Outdoor unit computer ERROR CODE : E : 1c communication error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When it cannot receive an effective signal for 10sec between the Main CPU and Sub CPU in outdoor unit.
  • Page 82 Indicate or Display: Trouble shooting 22 OUTDOOR UNIT Error Method: Outdoor Unit : No indication Excessive high pressure protection ERROR CODE : E : 24 on cooling Detective details: Detective Actuators: Excessive high pressure protection on cooling mode has been Outdoor Unit Main PCB Circuit activated.
  • Page 83 ( For AR*A12L - 24L ) Indicate or Display: Trouble shooting 23 OUTDOOR UNIT Error Method: Outdoor Unit : No indication INDOOR UNIT ERROR CODE : E : 25 PFC circuit error Detective Actuators: Detective details: When inverter output DC voltage is higher than 415V for over 3 seconds, Outdoor Unit Main PCB Circuit the compressor stops.
  • Page 84 Indicate or Display: Trouble shooting 26 OUTDOOR UNIT Error Method: Outdoor Unit (AR*A12L- 24L) : LED 0.1sec ON/ 0.1sec OFF (AR*A36L/ 45L) : LED 5 times blink Outdoor Heat Exchanger Temperature ERROR CODE : E : 29 Sensor (Middle) Error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit...
  • Page 85 Indicate or Display: Trouble shooting 27 OUTDOOR UNIT Error Method: Outdoor Unit (AR*A12L- 24L) : LED 2sec ON/ 5sec OFF INDOOR UNIT (AR*A36L/ 45L) : LED 10 times blink Compressor temperature error ERROR CODE : E : 2b Detective details: Detective Actuators: When the compressor temperature becomes higher than 110°C, Outdoor Unit Main PCB Circuit...
  • Page 86 Indicate or Display: Trouble shooting 28 INDOOR UNIT Error Method: Outdoor Unit : No indication ERROR CODE : E : 2c 4-way valve error Detective Actuators: Detective details: When the indoor heat exchanger temperature is compared with Indoor Unit Controller PCB Circuit the room temperature, and either following condition is detected Heat Exchanger Temperature Thermistor continuously two times, the compressor stops.
  • Page 87 ( For AR*A36L/ 45L ) Indicate or Display: Trouble shooting 29 OUTDOOR UNIT Error Method: Outdoor Unit : LED 8 times blink Heat Sink Temperature Sensor Error ERROR CODE : No indication Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When Heat Sink Temperature Thermistor open or Heat Sink Temperature Thermistor short-circuit is detected at power ON or while running the compressor.
  • Page 88 Indicate or Display: Trouble shooting 30 OUTDOOR UNIT Error Method: Outdoor Unit (AR*A12L- 24L) : LED 0.1sec ON/ 2sec OFF (AR*A36L/ 45L) : LED 14 times blink Compressor Start-up error (Permanent Stop) ERROR CODE : E : 1A Detective Actuators: Detective details: On start-up the compressor, when detected rotor position is out of phase Outdoor Unit Main PCB Circuit...

  • Page 89: Trouble Shooting With No Error Code

    7-3 TROUBLE SHOOTING WITH NO ERROR CODE Forecast of Cause: Trouble shooting 31 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 90 Forecast of Cause: Trouble shooting 32 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 91 Forecast of Cause: Trouble shooting 33 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 92 Forecast of Cause: Trouble shooting 34 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 93 Forecast of Cause : Trouble shooting 35 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 94: 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 95 SERVICE PARTS INFORMATION 2 Inverter Compressor Check Point 1 : Check Connection Check terminal connection of Compressor Check connection of Main PCB (loose or incorrect wiring) (Loose or incorrect wiring) Terminal cover opened (RED) (RED) MAIN PCB W304 AR*A36L/ 45L W305 W303 (WHITE)
  • Page 96 ( For AR*A36L/ 45L ) 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(+)
  • Page 97 SERVICE PARTS INFORMATION 4 Outdoor unit Electronic Expansion Valve ( EEV ) Check Point 1 : Check Connections Check connection of connector (CN27 or CN40) ( Loose connector or open cable ) EXPANSION VALVE COIL BROWN CN27 BLUE ORANGE CN40 CN40 YELLOW WHITE...

  • Page 98: Appending Data

    R410A DUCT type INVERTER 8 . APPENDING DATA...

  • Page 99: Capacity Table

    8. APPENDING DATA 8-1. CAPACITY TABLE MODEL : AR*A12LATN / AO*A12LACL COOLING 12.2 Indoor temperature °CDB °CWB °CDB 3.52 3.13 0.31 3.92 3.15 0.31 4.05 3.42 0.32 4.32 3.43 0.32 4.46 3.70 0.32 4.72 3.69 0.32 4.99 3.93 0.33 3.33 3.00 0.51 3.71...
  • Page 100 MODEL : AR*A14LATN / AO*A14LACL COOLING 13.7 Indoor temperature °CDB °CWB °CDB 4.06 3.64 0.36 4.52 3.67 0.36 4.68 3.98 0.36 4.99 4.00 0.37 5.14 4.32 0.37 5.45 4.30 0.37 5.76 4.58 0.38 3.97 3.58 0.42 4.42 3.60 0.43 4.57 3.91 0.43 4.87...
  • Page 101 MODEL : AR*A18LATN / AO*A18LACL COOLING 13.7 Indoor temperature °CDB °CWB °CDB 4.44 3.44 0.35 4.94 3.46 0.35 5.11 3.77 0.35 5.45 3.78 0.36 5.62 4.08 0.36 5.96 4.06 0.36 6.29 4.33 0.37 4.34 3.40 0.41 4.83 3.42 0.42 5.00 3.71 0.42 5.33...
  • Page 102 MODEL : AR*A24LATN / AO*A24LACL COOLING 18.3 Indoor temperature °CDB °CWB °CDB 5.62 4.62 0.60 6.26 4.65 0.61 6.47 5.05 0.62 6.90 5.07 0.62 7.11 5.48 0.62 7.54 5.45 0.63 7.97 5.81 0.64 5.53 4.58 0.65 6.16 4.60 0.66 6.37 5.00 0.66 6.79...
  • Page 103 MODEL : AR*A36LATN / AO*A36LATL COOLING 32.2 Indoor temperature °CDB °CWB °CDB 8.68 6.29 1.21 9.67 6.33 1.23 10.00 6.88 1.24 10.66 6.91 1.25 10.99 7.46 1.26 11.65 7.43 1.27 12.31 7.91 1.28 8.37 6.18 1.44 9.33 6.21 1.47 9.65 6.75 1.47 10.28 6.78 1.49 10.60 7.32...
  • Page 104 MODEL : AR*A45LATN / AO*A45LATL COOLING 35.3 Indoor temperature °CDB °CWB °CDB 10.59 8.61 1.51 11.80 8.66 1.54 12.20 9.42 1.55 13.00 9.45 1.56 13.41 10.20 1.57 14.21 10.16 1.58 15.02 10.82 1.60 10.20 8.42 1.79 11.37 8.47 1.81 11.75 9.21 1.82 12.53 9.24 1.84 12.92 9.98 1.85 13.69 9.94...

  • Page 105: Operation Range

    8-2. OPERATION RANGE MODEL : AR*A12/ 14/ 18/ 24LATN / AO*A12/ 14/ 18/ 24LACL Operation Range Mode Indoor humidity Outdoor temperature Indoor temperature Cooling About 80% or less -10 to 46°C 18 to 32°C Heating 30°C or less -15 to 24°C MODEL : AR*A36/ 45LATN / AO*A36/ 45LATL Operation Range Mode...

  • Page 106: Electric Characteristics

    8-3. ELECTRIC CHARACTERISTICS Model Name AR*A12LATN AR*A14LATN Voltage Power Supply Frequency Max Operating Current 1.5 - 2.5 Connection cable Wiring Spec. (Indoor unit to outdoor unit) Limited wiring length Model Name AO*A12LACL AO*A14LACL Voltage Power Supply Frequency Max Operating Current 10.0 12.5 Starting Current...
  • Page 107 Model Name AR*A36LATN AR*A45LATN Voltage Power Supply Frequency Max Operating Current 1.5 - 2.5 Connection cable Wiring Spec. (Indoor unit to outdoor unit) Limited wiring length Model Name AO*A36LATL AO*A45LATL Voltage Power Supply Frequency Max Operating Current 19.0 20.5 15.0 Starting Current Main Fuse (Circuit breaker) Curren...

  • Page 108: Safety Device

    8-4. SAFETY DEVICE OUTDOOR UNIT Model AO*A12LACL AO*A14LACL 20A 250V Current fuse (NEAR THE TERMINAL) 5A 250V Circuit protection 15A 250V Current fuse (MAIN PRINTED CIRCUIT BOARD) 3.15A 250V OFF : 100 °C Fan motor Thermal protection program protection ON : 95 °C Thermal protection program OFF : 110°C...

  • Page 109: Indoor Unit

    INDOOR UNIT Model AR*A12LATN AR*A14LATN Circuit Current fuse (PCB) 3.15A 250V protection OFF : 140 20°C Fan motor Thermal protection program protection ON : 110 20 °C Model AR*A18LATN AR*A24LATN Circuit Current fuse (PCB) 3.15A 250V protection OFF : 140 20°C Fan motor Thermal protection program protection...
  • Page 110 8-5. FUNCTION SETTING 8-5-1 INDOOR UNIT Follow the instructions in the Local Setup Procedure, which is supplied with the remote control, in accordance with the installed condition. After the power is turned on, perform the Function Setting on the remote control. The settings may be selected between the following two: Function Number or Setting Value.
  • Page 111 1-4. Setting Other Functions The following settings are also possible, depending on the operating conditions. Auto Restart Factory setting) Setting Description Function Number Setting Value Indoor Room Temperature Sensor Switching Function (Only for Wired remote controller) Factory setting) Setting Description Function Number Setting Value If setting value is “00”,...

  • Page 112: Procedures To Change The Function Setting

    8-5-2 Procedures to change the Function Setting This procedure changes the function settings used to control the indoor unit according to the installation conditions. Incorrect settings can cause the indoor unit to malfunction. This procedure should be performed by authorized installation or service personnel only. Perform the "FUNCTION SETTING"...

  • Page 113: Wired Remote Controller

    8-5-3 WIRED REMOTE CONTROLLER Wired remote controller Can be used. ( Do not change.) Dual remote controller setting Filter reset operation and filter display ( Duct model is nonfunctional.) DIP SW Can be used. ( Do not change.) Can be used. ( Do not change.) Memory backup setting SWITCH POSITION Wired remote controller...

  • Page 114: Installation Manual

    R410A DUCT type INVERTER 9 . INSTALLATION MANUAL...
  • Page 115 Duct Type STANDARD PARTS INSTALLATION 2. DRILLING HOLES FOR BOLTS AND IN- 4. LEVELING CAUTION CAUTION Base horizontal direction leveling on top of the unit. STALLING THE BOLTS The following installation parts are furnished. Use them as required. PROCEDURE When air is taken in from the bottom side, the •...
  • Page 116 2. BENDING PIPES (3) When the fl are nut is tightened properly by your hand, use a 1. CONNECTION DIAGRAMS (1) Remove the control box cover and install each connection INSTALLING THE ELECTRICAL WIRING FUNCTION SETTING Setting Other Functions torque wrench to fi nally tighten it. wire.
  • Page 117 Duct Type STANDARD PARTS INSTALLATION 2. DRILLING HOLES FOR BOLTS AND IN- 4. LEVELING For the bottom air intake, follow the procedure of 1 → 2 for CAUTION Base horizontal direction leveling on top of the unit. installation. STALLING THE BOLTS The following installation parts are furnished.
  • Page 118 2. BENDING PIPES (3) When the fl are nut is tightened properly by your hand, use a 1. CONNECTION DIAGRAMS (1) Remove the control box cover and install each connection INSTALLING THE ELECTRICAL WIRING FUNCTION SETTING Setting Other Functions torque wrench to fi nally tighten it. wire.
  • Page 119 Duct Type For authorized service personnel only. INSTALLATION Slide the unit in the arrow direction and fasten it. • Cut the drain hose insulation at a position approximately 30mm CAUTION from the end with cutters, etc. CAUTION Hanging bolt M10 Special nut A WARNING PROCEDURE...
  • Page 120 CONNECTING THE 2. BENDING PIPES INSTALLING THE 1. CONNECTION DIAGRAMS (1) Remove the control box cover and install each connection CAUTION ELECTRICAL WIRING CAUTION wire. The pipes are shaped by your hands. Be careful not to collapse PIPE COUPLER HEAT them.
  • Page 121 Duct Type For authorized service personnel only. INSTALLATION Slide the unit in the arrow direction and fasten it. • Cut the drain hose insulation at a position approximately CAUTION 60 mm from the end with cutters, etc. CAUTION Hanging bolt M10 Special nut A WARNING PROCEDURE...
  • Page 122 CONNECTING THE 2. BENDING PIPES INSTALLING THE 1. CONNECTION DIAGRAMS (1) Remove the control box cover and install each connection CAUTION ELECTRICAL WIRING CAUTION wire. The pipes are shaped by your hands. Be careful not to collapse PIPE COUPLER HEAT them.

  • Page 123: Installation Instruction

    1. LIMITATION OF REFRIGERANT PIPING LENGTH INSTALLATION PROCEDURE Connector cover removal When using conventional flare tools to flare R410A pipes, the dimension 4. HOW TO USE ADAPTER (Connection ports of Discharge the nitrogen gas and starting removing the gas with a SPLIT TYPE ROOM AIR CONDITIONER A should be approximately 0.5 mm more than indicated in the table (for vacuum pump.
  • Page 124 1. LIMITATION OF REFRIGERANT PIPING LENGTH INSTALLATION PROCEDURE Connector cover removal When using conventional flare tools to flare R410A pipes, the dimension Discharge the nitrogen gas and starting removing the gas with a CAUTION SPLIT TYPE ROOM AIR CONDITIONER A should be approximately 0.5 mm more than indicated in the table (for vacuum pump.
  • Page 125 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 126 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. • Remove the valve cover by sliding upward. Power supply Fill in a gap at the entrance of the cords with insulation (seal).

  • Page 127: Remote Controller Setting

    Remote Controller (Wired Type) INSTALLATION INSTRUCTION SHEET (PART NO. 9373328063-02) For authorized service personnel only. This mark indicates procedures which, if improperly performed, might lead to the death or serious injury of WARNING! the user. • For the air conditioner to operate satisfactorily, install it as outlined in this installation instruction sheet. •...
  • Page 128 When remote controller cord is embedded Fig. 2 Fig. 3 (1) Embed the remote controller cord and box. [Example] 1. Red 2. White Hole (2) Pass the remote controller cord through the hole 3. Black in the rear case and connect the remote con- Remote troller cord to the remote controller terminal controller cord...

  • Page 129: Special Installation Methods

    REMOTE CONTROLLER CORD MODIFICATION When the installation instruction sheet for the indoor unit contains information that the remote controller cord must be modified, perform the following work. The remote controller cord must be modified when connecting it Fig. 4 Fig. 5 to some indoor unit models.
  • Page 130 TURNING ON THE POWER 1. Check the remote controller wiring and DIP switch settings. 2. Install the front case. When installing the front case, connect the connector to the front case (in 2 REMOTE CONTROLLER SETTING). 3. Check the indoor and outdoor unit wiring and circuit board switch settings, and then turn on the indoor and outdoor units. After “ ”...

  • Page 131: Setting The Room Temperature Detection Location

    SETTING THE ROOM TEMPERATURE DETECTION LOCATION The detection location of the room temperature can be selected from the following two examples. Choose the detection location that is best for the installation location. A. Indoor unit setting (factory setting) The room temperature is detected by the indoor unit temperature sensor.
  • Page 132 FUNCTION SETTING This procedure changes the function settings used to control the indoor unit according to the installation conditions. Incorrect settings can cause the indoor unit to malfunction. This procedure should be performed by authorized installation or service personnel only. Perform the “FUNCTION SETTING”...
  • Page 133 1116,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan June. 2007 Printed in Japan...

This manual is also suitable for:

Ara45latnAoa12laclAra24latnAoa14laclAra18latnAra14latn ... Show all

Table of Contents