Fujitsu AU G24LVLA Series Service Instruction
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Fujitsu AU G24LVLA Series Service Instruction

Fujitsu AU G24LVLA Series Service Instruction

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SERVICE
INSTRUCTION
R410A
SPLIT TYPE
ROOM AIR CONDITIONER
Floor Ceiling
Duct
type
Cassette
INVERTER
Models
Indoor unit
AU* G24LVLA
AR* G24LMLA
AB* G24LVTA
type
type
Outdoor unit
AO* G24LALA

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Summary of Contents for Fujitsu AU G24LVLA Series

  • Page 1 SPLIT TYPE ROOM AIR CONDITIONER Floor Ceiling type Duct type Cassette type INVERTER SERVICE INSTRUCTION Models Indoor unit Outdoor unit AO* G24LALA AU* G24LVLA AR* G24LMLA AB* G24LVTA R410A...

  • Page 2: Table Of Contents

    CONTENTS 1. DESCRIPTION OF EACH CONTROL OPERATION 1. COOLING OPERATION..................... 01-01 2. HEATING OPERATION....................01-02 3. DRY OPERATION...................... 01-02 4. AUTO CHANGEOVER OPERATION................. 01-03 5. INDOOR FAN CONTROL................... 01-05 6. OUTDOOR FAN CONTROL..................01-09 7. LOUVER CONTROL....................01-10 8. COMPRESSOR CONTROL..................01-13 9.
  • Page 3 2. TROUBLE SHOOTING 2-1 ERROR DISPLAY...................... 02-01 02-01 2-1-1 INDOOR UNIT & WIRED REMOTE CONTROLLER DISPLAY......02-02 2-1-2 WIRED REMOTE CONTROLLER DISPLAY............2-1-3 OUTDOOR UNIT DISPLAY................. 02-02 2-2 TROUBLE SHOOTING WITH ERROR CODE............02-03 2-3 TROUBLE SHOOTING WITH NO ERROR CODE............ 02-25 2-4 SERVICE PARTS INFORMATION................

  • Page 5: Description Of Each Control Operation

    R410A FLOOR CEILING / DUCT / CASSETTE type INVERTER 1 . DESCRIPTION OF EACH CONTROL OPERATION...

  • Page 6: Cooling Operation

    1-1. COOLING OPERATION 1-1-1 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. The maximum frequency is limited in the range shown in Fig.1 based on the fan speed mode and the outdoor temperature.

  • Page 7: Heating Operation

    1-2. HEATING OPERATION 1-2-1 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°C than a set temperature, the compressor operation frequency will attain to maximum frequency.

  • Page 8: Auto Changeover Operation

    1-4. AUTO CHANGEOVER OPERATION When the air conditioner is set to the Auto mode by remote controller, operation starts in the optimum mode from among the Heating, Cooling, Dry and Monitoring mode. During operation, the optimum mode is automatically switched in accordance with temperature changes. The temperature can be set between 18°C and 30°C in 1°C steps.
  • Page 9 AUTO CHANGEOVER operation flow chart START Setting temperature Room temp. Ts + 2 °C Room temp. Ts - 2 °C Middle zone Operation mode COOLING (AUTO:DRY) HEATING OPERATION of outdoor unit : Cooling or Dry? OPERATION Thermostat remains Thermostat remains Operation mode in OFF state for 6 minutes or in OFF state for 6 minutes or...

  • Page 10: Indoor Fan Control

    1-5. INDOOR FAN CONTROL 1. Fan speed ( Table 5 : Indoor Fan Speed ) AB*G24LVTA Operation mode Air flow mode Speed (rpm) Heating 1300 1200 1150 1000 Quiet Cool air prevention S-Lo 1330 Cooling 1150 1000 Quiet *Soft Quiet Auto S-Lo Monitoring...
  • Page 11 2. FAN OPERATION The airflow can be switched in 5 steps such as AUTO, QUIET, LOW, MED, HIGH, while the indoor fan only runs. When Fan mode is set at (Auto), it operates on [MED] Fan Speed. 3. COOLING OPERATION (Auto : Cooling) Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Fig.
  • Page 12 4. MOISTURE RETURN PREVENTION CONTROL (Cooling mode& Dry mode) Switch the airflow [Auto] at cooling mode, and the indoor fan motor will run as shown in Fig.6. 5. INDOOR UNIT FAN CONTROL FOR ENERGY SAVING (Cooling mode) Switch the airflow at cooling mode, and the indoor fan motor will run as shown in Fig.6. It depends on the Function setting "Indoor unit fan control for energy saving."...
  • Page 13 7. COOL AIR PREVENTION CONTROL (Heating mode) The maximum value of the indoor fan speed is set as shown in Fig. 8, based on the detected temperature by the indoor heat exchanger sensor on heating mode. When the compressor does not operate, the indoor fan motor operates [S-Lo] mode. ( Fig.8 : Cool Air Prevention Control ) 7-1.

  • Page 14: Outdoor Fan Control

    1-6. OUTDOOR FAN CONTROL 1. Outdoor Fan Motor 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 500 rpm 950/ 820/ 670/ 500 rpm AO*G24LALA Less than 12°C 400/ 340/ 280/ 250/ 230 rpm...

  • Page 15: Louver Control

    1-7. LOUVER CONTROL 1. For Ceiling Type < AB*G24LVTA > (Function Range) Each time the button is pressed, the air direction range will change as follows: (Fig.9 : Air Direction Range) (Operation Range) During Cooling / Dry / Fan / Heating mode: Use the air direction adjustments within the ranges shown above.
  • Page 16 (Function Range) Each time the button is pressed, the air direction range will change as follows: RIGHT/LEFT air direction louvers (Fig.10 : Air Direction Range) Use the air direction adjustments within the ranges shown above. The remote control unit's display does not change. 1-4.
  • Page 17 (Function Range) Each time the button is pressed, the air direction range will change as follows: (Fig.11 : Air Direction Range) (Operation Range) During Cooling / Dry / Fan / Heating mode : Use the air direction adjustments within the ranges shown above. The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.

  • Page 18: Compressor Control

    1-8. COMPRESSOR CONTROL 1. OPERATION FREQUENCY RANGE The operation frequency of the compressor is different based on the operation mode as shown in Table 8. (Table 8 : Compressor Operation Frequency Range) Cooling Heating AO*G24LALA 18rps 113rps 18rps 120rps 34rps 2.

  • Page 19: Timer Operation Control

    1-9. TIMER OPERATION CONTROL 1-9-1 WIRED REMOTE CONTROLLER AR-WAE1E 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 20 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 21 1-9-2 WIRELESS REMOTE CONTROLLER AR-RAH1E (AU type), AR-RAH2E (AB type) ON / TIMER OFF / TIMER PROGRAM TIMER SLEEP TIMER 1. ON / OFF TIMER OFF timer : When the clock reaches the set time, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
  • Page 22 3. SLEEP TIMER If the sleep timer is set, the room temperature is monitored and the operation is stopped automatically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time ON. In the cooling operation mode When the sleep timer is set, the setting temperature is increased 1°C.

  • Page 23: Electronic Expansion Valve Control

    1-10. 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, the indoor heat exchanger sensor, the outdoor heat exchanger sensor, and the outdoor temperature sensor.

  • Page 24: Auto Restart

    1-14. AUTO RESTART When the power was interrupted by a power failure, etc. during operation, the operation contents at that time are memorized and when power is recovered, operation is automatically resumed with the memorized operation contents. (Table 9 : Operation contents memorized when the power is interrupted) Wired remote controller Wired remote controller Wireless remote...

  • Page 25: C Heat Operation

    1-17. 10 °C HEAT OPERATION 10°C HEAT operation performs as below when pressing 10°C HEAT button. (Table 11) Heating Operation mode Setting temp. 10°C Fan control mode Auto Economy LED display Defrost operation Operate as normal 1-18. ECONOMY OPERATION The ECONOMY operation functions by pressing ECONOMY button on the remote controller. At the maximum output, ECONOMY Operation is approximately 70% of normal air conditioner operation for cooling and heating.

  • Page 26: Drain Pump Operation

    1-21. DRAIN PUMP OPERATION (For AU / AR type) During Cooling / Dry mode 1. When the compressor starts, the drain pump starts simultaneously. 2. The drain pump operates continuously for 3 minutes after the compressor is turned off. 3. When the compressor stops by the "Anti- freezing protection", the drain pump is turned off in 1 hour after the compressor stops.

  • Page 27: Defrost Operation Control

    1-22. 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 13. (Table 13 : Condition of starting Defrost Operation) 1st time defrosting after starting operation Compressor contiguous Below 10 min.
  • Page 28 3. Defrost Flow Chart The defrosting shall proceed by the integrating operation time and outdoor heat exchanger temperature as follows. Heating operation start : Compressor ON (Not defrosted for 10 minutes) In case of Integrating defrost In case of 2nd In case of 1st defrost and later defrost for intermittent operation...

  • Page 29: Off Defrost Operation Control

    1-23. 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 30: Various Protections

    1-24. VARIOUS PROTECTIONS 1. DISCHARGE GAS TEMPERATURE OVER RISE PREVENTION CONTROL The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas temperature. When the discharge temperature becomes higher than 104°C, the compressor frequency is decreased 20rps, and it continues to decrease the frequency for 20rps every 120 seconds until the temperature becomes lower than 101°C.

  • Page 31: 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.17 : Cooling Pressure Over Rise Protection Control) Outdoor heat exchange temperature Compressor is OFF 67°C The compressor frequency is...

  • Page 33: Trouble Shooting

    R410A FLOOR CEILING / DUCT / CASSETTE type INVERTER 2 . TROUBLE SHOOTING...

  • Page 34: Error Display

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

  • Page 35: Wired Remote Controller Display

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

  • Page 36: Trouble Shooting With Error Code

    2-2 TROUBLE SHOOTING WITH ERROR CODE Trouble shooting 1 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Serial communication error (Serial reverse transfer error) Detective Actuators: Detective details: When the indoor unit cannot receive the serial signal from Outdoor unit Outdoor unit Main PCB more than 2minutes after power ON, or the indoor unit cannot receive Outdoor unit fan motor...
  • Page 37 Trouble shooting 2 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Serial communication error (Serial forward transfer error) Detective Actuators: Detective details: When the outdoor unit cannot properly receive the serial signal from Indoor unit Controller PCB indoor unit for 10 seconds or more.
  • Page 38 Trouble shooting 3 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Wired remote controller communication error Detective Actuators: Detective details: Indoor unit Controller PCB When the indoor unit cannot properly receive the signal from Wired remote controller Wired Remote Controller for 1 minute or more.
  • Page 39 Trouble shooting 4 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor unit capacity error Detective Actuators: Detective details: All indoor unit The total capacity of the indoor unit if it is install beyond. Forecast of Cause : 1.
  • Page 40 Trouble shooting 5 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor unit PCB model information error Detective details: Detective Actuators: When power is on and there is some below case. Indoor unit Controller PCB When model information of EEPROM is incorrect. When the access to EEPROM failed.
  • Page 41 Indicate or Display: Trouble shooting 6 INDOOR UNIT Error Method: Refer to error code table. Manual auto switch error Detective Actuators: Detective details: Indoor unit Controller PCB When the Manual auto switch becomes ON for consecutive 60 or Indicator PCB more seconds.
  • Page 42 Trouble shooting 7 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor room thermistor error Detective details: Detective Actuators: Indoor unit Controller PCB Room temperature thermistor is open or short is detected always. Room temperature thermistor Forecast of Cause : 1.
  • Page 43 Trouble shooting 8 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor heat ex. thermistor error Detective Actuators: Detective details: Indoor unit Controller PCB Heat exchanger (MID) thermistor is open or short is detected always. Heat exchanger (MID) thermistor Forecast of Cause : 1.
  • Page 44 Trouble shooting 9 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor unit fan motor error Detective Actuators: Detective details: When the condition that actual frequency of Indoor Fan is Indoor unit Controller PCB below 1/3 of target frequency is continued more than 56 seconds. Indoor unit fan motor Forecast of Cause: 1.
  • Page 45 Indicate or Display: Trouble shooting 10 INDOOR UNIT Error Method: Refer to error code table. Drain pump error Detective Actuators: Detective details: Indoor unit Controller PCB When Float switch is ON for more than 3 minutes. Float switch Forecast of Cause : 1. Float switch failure 2.
  • Page 46 Trouble shooting 11 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Outdoor unit main PCB model information error or communication error Detective details: Detective Actuators: When power is on and there is some below case. Outdoor unit Main PCB When model information of EEPROM is incorrect.
  • Page 47 Trouble shooting 12 Indicate or Display: OUTDOOR UNIT Error Method: INDOOR UNIT Refer to error code table. PFC circuit error Detective Actuators: Detective details: Outdoor unit Main PCB When inverter output DC voltage is higher than 415V for over 3 seconds, the compressor stops.
  • Page 48 Indicate or Display: Trouble shooting 13 OUTDOOR UNIT Error Method: Refer to error code table. Trip terminal L error Detective details: Detective Actuators: When the signal from FO terminal of IPM in Main PCB is "L"(=0V) Outdoor unit Main PCB while the compressor stops.
  • Page 49 Indicate or Display: Trouble shooting 14 OUTDOOR UNIT Error Method: Refer to error code table. Discharge temp. sensor error Detective details: Detective Actuators: When the discharge pipe temperature thermistor open or short-circuit Outdoor unit Main PCB is detected at power ON or while running the compressor. Discharge pipe temperature thermistor Forecast of Cause : 1.
  • Page 50 Indicate or Display: Trouble shooting 15 OUTDOOR UNIT Error Method: Refer to error code table. Outdoor unit Heat Ex. liquid temp. sensor error Detective Actuators: Detective details: Outdoor unit Main PCB When the heat exchanger temperature thermistor open is detected Heat exchanger temperature thermistor at power ON or while running the compressor.
  • Page 51 Indicate or Display: Trouble shooting 16 OUTDOOR UNIT Error Method: Refer to error code table. Outdoor temp. sensor error Detective Actuators: Detective details: Outdoor unit Main PCB When the outdoor temperature thermistor open or short-circuit is detected at power ON or while running the compressor. Outdoor temperature thermistor Forecast of Cause : 1.
  • Page 52 Trouble shooting 17 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Trip detection Detective details: Detective Actuators: When more than normal operating current to IPM in Main PCB flows, Outdoor unit Main PCB the compressor stops. Compressor After the compressor restarts, if the same operation is repeated within 40sec, the compressor stops again.
  • Page 53 Trouble shooting 18 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Compressor rotor position detection error (permanent stop) Detective details: Detective Actuators: While running the compressor, if the detected rotor location is out of Outdoor unit Main PCB phase with actual rotor location more than 90°, Compressor the compressor stops.
  • Page 54 Trouble shooting 19 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Outdoor unit fan motor error Detective Actuators: Detective details: When outdoor fan rotation speed is less than 100rpm in 20 seconds Outdoor unit Main PCB after fan motor starts, fan motor stops.
  • Page 55 Trouble shooting 20 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. 4-way valve error Detective Actuators: Detective details: When the indoor heat exchanger temperature is compared with Indoor unit Controller PCB the room temperature, and either following condition is detected Heat exchanger temperature thermistor continuously two times, the compressor stops.
  • Page 56 Trouble shooting 21 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Discharge temp. error Detective details: Detective Actuators: Outdoor unit Main PCB "Protection stop by "discharge temperature 110°C Discharge temperature thermistor during compressor operation"" generated 2 times within 24 hours. Forecast of Cause : 1.
  • Page 57 Trouble shooting 22 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Compressor temp. error Detective Actuators: Detective details: "Protection stop by Compressor temperature thermistor "compressor temperature 110°C during compressor operation"" generated 2 times within 24 hours. Forecast of Cause : 1.

  • Page 58: Trouble Shooting With No Error Code

    2-3 TROUBLE SHOOTING WITH NO ERROR CODE Forecast of Cause: Trouble shooting 23 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 59 Forecast of Cause: Trouble shooting 24 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 60 Forecast of Cause: Trouble shooting 25 1. Setting/ Connection failure 2. External cause No Operation (Power is ON) 3. Electrical Component defective Check Point 1 : Check indoor and outdoor installation condition Indoor Unit - Check incorrect wiring between Indoor Unit - Remote Control. Or, check if there is an open cable connection.
  • Page 61 Forecast of Cause: Trouble shooting 26 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 62 Forecast of Cause : Trouble shooting 27 1. Abnormal installation (Indoor/ Outdoor) Abnormal noise 2. Fan failure (Indoor/ Outdoor) 3. Compressor failure (Outdoor) Diagnosis method when Abnormal noise is occurred Abnormal noise is coming from Indoor unit. Abnormal noise is coming from outdoor unit. (Check and correct followings) (Check and correct followings) Is Main unit installed in stable condition?

  • Page 63: Service Parts Information

    2-4 SERVICE PARTS INFORMATION SERVICE PARTS INFORMATION 1 Compressor Diagnosis method of Compressor ( If outdoor Unit LED displays Error, refer to Trouble shooting ) Abnormal noise Stops soon after starting up Does not start up Check if vibration noise by Is there open or loose connection Is there open or loose connection cable?
  • Page 64 SERVICE PARTS INFORMATION 2 Inverter Compressor Check Point 1 : Check Connection Check terminal connection of Compressor (loose or incorrect wiring) C(T) S(S) (BLACK) (WHITE) Main PCB R(R) (RED) Check Point 2 : Check Winding Resistance Check winding resistance of each terminal If the resistance value is 0 or infinite, replace Compressor.
  • Page 65 SERVICE PARTS INFORMATION 3 Outdoor unit Electronic Expansion Valve ( EEV ) Check Point 1 : Check Connections Check connection of connector ( Loose connector or open cable ) EXPANSION VALVE COIL BROWN BLUE CN40 ORANGE YELLOW WHITE Check Point 3 : Check noise at start up Check Point 2 : Check Coil of EEV Remove connector, check each winding Turn on Power and check operation noise.
  • Page 66 SERVICE PARTS INFORMATION 4 Indoor unit fan motor Check Point 1 : Check rotation of fan Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor) >>If fan or bearing is abnormal, replace it. Check Point 2 : Check resistance of indoor fan motor Refer to below.

  • Page 67: Appending Data

    R410A FLOOR CEILING / DUCT / CASSETTE type INVERTER 3 . APPENDING DATA...

  • Page 68: Function Setting

    3-1. FUNCTION SETTING 3-1-1 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 69 1-5. Setting the Cooler room temperature correction Depending on the installed environment, the room temperature sensor may require a correction. The settings may be selected as shown in the table below. Factory setting) Setting Description Function Number Setting Value Standard Slightly lower control Lower control Warmar control...
  • Page 70 1-9. Cool air prevention (For AR type) This setting is used to set the fan speed when the compressor stops once the room temperature has reached the set temperature during heating operation. Factory setting) Setting Description Function Number Setting Value Super low Follow the setting on the remote controller (corresponding to ventilation)

  • Page 71: Procedures To Change The Function Setting

    3-1-2 PROCEDURES TO CHANGE THE FUNCTION SETTING The function settings of the control of the indoor unit can be changed by this procedure according to the installation conditions. Incorrect settings can cause the indoor unit malfunction. After the power is turned on, perform the "FUNCTION SETTING" according to the installation conditions using the remote controller.
  • Page 72 FUNCTION SETTING METHOD (for Wireless remote controller) <AR-RAH1E> <AR-RAH2E> Entering the Function Setting Mode While pressing the FAN button and SET TEMP.( ) button simultaneously, press the RESET button to enter the function setting mode. 10°C HEAT 10°C HEAT STEP 1. Setting the Remote controller Signal Code Use the following steps to select the signal code of the remote controller.
  • Page 73 REMOTE CONTROLLER SIGNAL CODE SETTING Use the following steps to select the signal code of the remote controller. (Note that the air conditioner cannot receive a signal code if the air conditioner has not been set for the signal code.) (1) Press the START/STOP button until only the clock is displayed on the remote controller display.

  • Page 74: Thermistor Resistance Values

    3-2. THERMISTOR RESISTANCE VALUES 3-2-1 INDOOR UNIT For AB / AR / AU type For AB / AU type For AR type Indoor heat exchanger thermistor Indoor heat exchanger thermistor Room temperature thermistor Temp (°C) Resistance(k ) Voltage(V) Temp (°C) Resistance(k ) Voltage(V) Temp (°C) Resistance(k ) Voltage(V)
  • Page 75 1116,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan April 2012 Printed in Japan...

This manual is also suitable for:

Ar g24lmla seriesAb g24lvta seriesAo g24lala series

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