Fujitsu AB A30LBT Series Service Instruction
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Fujitsu AB A30LBT Series Service Instruction

Fujitsu AB A30LBT Series Service Instruction

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SERVICE
INSTRUCTION
R410A
SPLIT TYPE
ROOM AIR CONDITIONER
Ceiling
Duct
Cassette
INVERTER
Models Indoor unit
AB* A30LBT
AB* A36LBT
AR* A30LBTU
AR* A36LBTU
AU* A30LBLU
AU* A36LBLU
type
type
type
Outdoor unit
AO* A30LFTL
AO* A36LFTL
AOTA30LGTL

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Summary of Contents for Fujitsu AB A30LBT Series

  • Page 1 SPLIT TYPE ROOM AIR CONDITIONER Ceiling type Duct type Cassette type INVERTER SERVICE INSTRUCTION Models Indoor unit Outdoor unit AB* A30LBT AO* A30LFTL AB* A36LBT AO* A36LFTL AR* A30LBTU AOTA30LGTL AR* A36LBTU AU* A30LBLU AU* A36LBLU R410A...

  • Page 2: Table Of Contents

    CONTENTS 1. DESCRIPTION OF EACH CONTROL OPERATION COOLING OPERATION................... 01-01 HEATING OPERATION.................... 01-02 DRY OPERATION..................... 01-03 AUTO CHANGEOVER OPERATION............... 01-04 INDOOR FAN CONTROL..................01-05 OUTDOOR FAN CONTROL..................01-07 LOUVER CONTROL....................01-08 COMPRESSOR CONTROL..................01-11 TIMER OPERATION CONTROL................01-12 1-10 ELECTRONIC EXPANSION VALVE CONTROL............. 01-16 1-11 TEST OPERATION CONTROL................
  • Page 3 3. APPENDING DATA FUNCTION SETTING....................03-01 3-1-1 INDOOR UNIT...................... 03-01 3-1-2 Switching Remote Control Unit Signal Codes............03-04 3-1-3 Procedures to change the Function Setting for wireless RC........ 03-05 3-1-4 Procedures to change the Function Setting............03-07 3-1-5 Wired Remote Controller..................03-08 EXTERNAL INPUT &...

  • Page 5: Description Of Each Control Operation

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

  • Page 6: Cooling Operation

    1-1. COOLING OPERATION 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 speed of the compressor. * If the room temperature is 2 °C higher than a set temperature, the compressor operation speed will attain to maximum speed.

  • Page 7: Heating Operation

    1-2. HEATING OPERATION 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 speed of the compressor. * If the room temperature is lower 3 °C than a set temperature, the compressor operation speed will attain to maximum speed.

  • Page 8: Dry Operation

    1-3. DRY OPERATION The compressor rotation speed shall change according to the temperature, 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 rotation speed ) Operating speed Temperature zone X zone...

  • Page 9: Auto Changeover Operation

    1-4. 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 °C steps.

  • Page 10: Indoor Fan Control

    1-5. INDOOR FAN CONTROL 1. Fan speed ( Table 5 : Indoor Fan Speed ) AU*A30/36LBLU AR*A30/36LBTU Operation mode Air flow mode Speed (rpm) Operation mode Air flow mode Speed (rpm) Cooling Cooling 1200 1000 Heating Heating 1200 1100 1000 Cool Air Prevention Cool Air Prevention Auto...
  • Page 11 4. HEATING OPERATION Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Figure 7. On the other hand, if switched in [HIGH] [QU], the indoor motor will run at a constant airflow of [HEAT] operation modes QU, LOW, MED, HIGH, as shown in Table 5.

  • Page 12: Outdoor Fan Control

    1-6. OUTDOOR FAN CONTROL Following table shows the fan speed of the outdoor unit. Table 6 : Fan speed of the outdoor unit Outdoor temperature zone Cooling D zone 850/ 800/ 620/ 500/ 400 rpm 550/ 450 rpm AO*A30LFTL AOTA30LGTL F zone 500/ 320/ 250 rpm 500/ 320/ 250 rpm...

  • Page 13: Louver Control

    1-7. LOUVER CONTROL Ceiling type (Function Range) Each time the button is pressed, the air direction range will change as follows: (Air Direction Range) (Operation Range) During Cooling/Dry mode : During Heating/Fan mode : Use the air direction adjustments within the ranges shown above. The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.
  • Page 14 (Function Range) Each time the button is pressed, the air direction range will change as follows: (Air Direction Range) Use the air direction adjustments within the ranges shown above. The remote control unit's display does not change. 4. SWING OPERATION When the swing signal is received from the remote controller, the horizontal louver starts to swing.
  • Page 15 Cassette type (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 mode/Fan mode : During 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 16: Compressor Control

    1-8. COMPRESSOR CONTROL 1. OPERATION SPEED RANGE The operation speed of the compressor is different based on the operation mode as shown in Table 8. (Table 8 : Compressor Operation Speed Range) Cooling Heating AO*A30LFTL AO*A36LFTL 16rps 72rps 16rps 90rps 29rps AOTA30LGTL 2.

  • Page 17: Timer Operation Control

    1-9. TIMER OPERATION CONTROL 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 18 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 19 Wireless Remote Controller AR-SY1 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 ON timer : When the clock reaches the set time, the air conditioner will be turned on.
  • Page 20 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 degC.

  • Page 21: 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 speed, the temperatures detected by the discharge temperature sensor, the indoor heat exchanger sensor, the outdoor heat exchanger sensor, and the outdoor temperature sensor.

  • Page 22: 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. When the power is interrupted and recovered during timer operation, timer operation is canceled, but only setting time is memorized.

  • Page 23: Forced Cooling Operation

    1-17. FORCED COOLING OPERATION The forced cooling operation starts up when MANUAL / AUTO button is pressed more than 10 seconds. During the forced cooling operation, it keeps operation regardless of detection value of room temperature sensor. Operation LED and timer LED blink during the forced cooling operation. They blink for 1 second ON and 1 second OFF on both operation LED and timer LED (same as test operation).

  • Page 24: Defrost Operation Control

    1-21. DEFROST OPERATION CONTROL 1. CONDITION OF STARTING THE DEFROST OPERATION The defrost operation starts as shown in the following Table 10. (Table 10 : Condition of starting Defrost Operation) Compressor integrating operation time 1st defrost after starting operation Less than 22 minutes More than 22 minutes More than 62 minutes Outdoor heat exchanger...
  • Page 25 3. Defrost Flow Chart The defrosting shall proceed by the integrating operation time, outdoor temperature and outdoor heat exchanger temperature as follows. Heating operation start : Compressor ON (Not defrosted for 10 minutes) 1st defrost 2nd and later defrost Integrating defrost (Constant monitoring) Compressor Compressor...

  • Page 26: Off Defrost Operation Control

    1-22. 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 27: Economy Operation

    1-23. 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 28: Various Protections

    1-24. VARIOUS PROTECTIONS 1. DISCHARGE GAS TEMPERATURE OVER RISE PREVENTION CONTROL The discharge gas thermosensor will detect discharge gas temperature. When the discharge temperature becomes higher than 104°C, the compressor speed is decreased 10rps, and it continues to decrease the speed for 10rps every 120 seconds until the temperature becomes lower than 101°C.
  • Page 29 3. ANTIFREEZING CONTROL (Cooling and Dry mode) The compressor speed is decrease on cooling & dry mode when the indoor heat exchanger temperature sensor detects the temperature lower than Temperature . Then, the anti-freezing control is released when it becomes higher than Temperature (Table 13 : Anti-freezing Protection Operation / Release Temperature) Outdoor temperature Temperature...

  • Page 30: Compressor Stop Control

    6. COMPRESSOR TEMPERATURE PROTECTION When the compressor temperature sensor detects higher than 108°C, the compressor is stopped. The protection is released when the compressor temperature sensor detects 80°C after 3 minutes of compressor stop. 7. HIGH PRESSURE PROTECTION When the pressure switch becomes OFF (Open : higher than 609.2 psi / 4.2 MPa), the compressor is stopped.

  • Page 31: Trouble Shooting

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

  • Page 32: Error Display

    2-1 ERROR DISPLAY 2-1-1 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 33 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 34: Indoor Unit Display

    7-1-2 INDOOR UNIT DISPLAY The OPERATION, TIMER and FILTER lamps operate as follows according to the error contents. Error display Trouble Error contents OPERATION TIMER FILTER shooting (GREEN) (ORANGE) (RED) Communication error 2 times (Serial reverse transfer error) 3 times Outdoor communication signal error 4 times (Forward transfer signal error)
  • Page 35 2-1-3 OUTDOOR UNIT DISPLAY 1. ERROR DISPLAY 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 0.1sec ON / 2sec OFF Outdoor unit sensor error 5, 7, 8 0.1sec ON / 0.1sec OFF...

  • Page 36: Trouble Shooting With Error Code

    2-2 TROUBLE SHOOTING WITH ERROR CODE Trouble shooting 1 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Communication Error (Indoor unit Remote control) Detective Actuators: Detective details: 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 Wired Remote Control...

  • Page 37: Communication Error (Serial Reverse Transfer Error)

    Trouble shooting 2 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. 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 Circuit more than 10seconds, then permanent stop after 20seconds.

  • Page 38: Room Temperature Sensor Error

    Trouble shooting 3 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Room Temperature Sensor Error Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit When Room Temperature Thermistor open or short-circuit is Room Temperature Thermistor detected at power ON. Forecast of Cause: 1.

  • Page 39: Indoor Heat Exchanger Temperature Sensor Error

    Trouble shooting 4 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor Heat Exchanger Temperature Sensor Error Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit When Heat Exchanger Temperature Thermistor open or short-circuit is Heat Exchanger Temperature Thermistor detected at power ON.

  • Page 40: Outdoor Heat Exchanger Temperature Sensor(Outlet) Error

    Trouble shooting 5 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Outdoor Heat Exchanger Temperature Sensor (Outlet) Error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When Heat Exchanger Temperature Thermistor (Outlet) open or Heat Exchanger Temperature short-circuit is detected at power ON or while running the compressor.

  • Page 41: Water Drain Abnormal

    ( For AU Type ) Trouble shooting 6 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Water Drain Abnormal 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 42: Outdoor Temperature Sensor Error

    Trouble shooting 7 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Outdoor Temperature Sensor Error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When Outdoor Temperature Thermistor open or short-circuit is Outdoor Temperature Thermistor detected at power ON or while running the compressor. Forecast of Cause: 1.

  • Page 43: Outdoor Discharge Pipe Temperature Sensor Error

    Trouble shooting 8 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Outdoor Discharge Pipe Temperature Sensor Error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When Discharge Pipe Temperature Thermistor open or short-circuit Discharge Pipe Temperature Thermistor is detected at power ON or while running the compressor.

  • Page 44: Discharge Temperature Error

    Trouble shooting 9 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Discharge temperature error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When the discharge temperature becomes higher than 110°C, the compressor stops. Discharge Pipe Temperature Thermistor After the compressor restarts, if the same operation is repeated, the compressor stops permanently.

  • Page 45: Indoor Eeprom Abnormal (Model No.)

    Trouble shooting 10 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor EEPROM abnormal (Model No.) Detective Actuators: Detective details: When the model information being read from EEPROM has Indoor Unit Controller PCB circuit an apparent error. Forecast of Cause: 1.

  • Page 46: Indoor Fan Motor Abnormal

    Trouble shooting 11 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor Fan Motor abnormal 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 47: Outdoor Communication Signal Error (Forward Transfer Signal Error)

    Trouble shooting 12 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Outdoor Communication Signal Error (Forward Transfer Signal Error) Detective Actuators: Detective details: When the outdoor unit cannot receive the serial signal from Indoor unit Indoor Unit Controller PCB Circuit more than 10seconds.

  • Page 48: Compressor Temperature Sensor Error

    Trouble shooting 13 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Compressor Temperature Sensor Error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When Compressor Temperature Thermistor open or short-circuit is Compressor Temperature Thermistor detected at power ON or while running the compressor. Forecast of Cause: 1.

  • Page 49: Pressure Sw Error

    Trouble shooting 14 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Pressure Switch Error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When pressure switch open is detected in 10 seconds Pressure Switch after the power is turned on. Forecast of Cause: 1.

  • Page 50: Ipm Error

    Trouble shooting 15 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. IPM error (Permanent Stop) Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When more than normal operating current to IPM in Main PCB flows, the compressor stops.

  • Page 51: Active Filter Module Error

    Trouble shooting 16 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Active Filter Error Detective Actuators: Detective details: Outdoor Unit Main PCB Inverter low voltage protection Inverter overvoltage protection Outdoor Unit Filter PCB Active Power Module Forecast of Cause: 1.

  • Page 52: Ct Error

    Trouble shooting 17 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. CT error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When Input Current Sensor has detected 0A, while Inverter Outdoor Unit Filter PCB Circuit Compressor is operating at higher than 56Hz, after 1minute upon starting the Compressor.

  • Page 53: Compressor Rotor Location Cannot Detect (Permanent Stop)

    Trouble shooting 18 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Compressor rotor location cannot detect (Permanent Stop) Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit While running the compressor, if the detected rotor location is out of phase with actual rotor location more than 90 degrees, Compressor the compressor stops.

  • Page 54: Outdoor Unit Fan Motor Error

    Trouble shooting 19 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Outdoor Unit Fan Motor Error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When outdoor fan rotation speed is less than 100rpm in 20 seconds after fan motor starts, fan motor stops.

  • Page 55: Indoor Manual Auto Switch Error

    Trouble shooting 20 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor manual auto switch error Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit When the Forced auto switch becomes ON for 30 consecutive seconds. Forced auto switch Forecast of Cause: 1.

  • Page 56: Exessive High Pressure Protection On Cooling

    Trouble shooting 21 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Excessive high pressure protection on cooling Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit Excessive high pressure protection on cooling mode has been Outdoor Fan Motor activated.

  • Page 57: Compressor Temperature Error

    Trouble shooting 22 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Compressor temperature error Detective Actuators: Detective details: When the compressor temperature becomes higher than 110°C, Outdoor Unit Main PCB Circuit the compressor stops. Compressor Temperature Thermistor After the compressor restarts, if the same operation is repeated, the compressor stops permanently.

  • Page 58: 4-Way Valve Error

    Trouble shooting 23 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. 4-way valve error Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit When the indoor heat exchanger temperature is compared with the room temperature, and either following condition is detected Heat Exchanger Temperature continuously two times, the compressor stops.

  • Page 59: Trouble Shooting With No Error Code

    2-3 TROUBLE SHOOTING WITH NO ERROR CODE Trouble shooting 24 Forecast of Cause : 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 60 Trouble shooting 25 Forecast of Cause : 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. >>...
  • Page 61 Trouble shooting 26 Forecast of Cause : 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 62 Trouble shooting 27 Forecast of Cause : 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 63 Trouble shooting 28 Forecast of Cause : 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 64: 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 ) Does not start up. Stops soon after starting up. Abnormal noise. Check if vibration noise by Is there open or loose connection Is there open or loose connection loose bolt or contact noise...
  • Page 65 SERVICE PARTS INFORMATION 2 Inverter Compressor Check Point 1 : Check connection Check terminal connection of Compressor. Check connection of Transistor PCB. (Loose or incorrect wiring) (Loose or incorrect wiring) S(V) T(W) WHITE BLACK WHITE TM305 Transistor PCB TM304 BLACK TM303 Transistor PCB R(U)
  • Page 66 SERVICE PARTS INFORMATION 3 Outdoor Unit Electronic Expansion Valve (EEV) Check Point 1 : Check Connections Check connection of connector. ( Loose connector or open cable ) BROWN BLUE EXPANSION VALVE COIL CN700 ORANGE YELLOW WHITE Check Point 2 : Check EEV Coil Check Point 3 : Check voltage from Main PCB Remove Connector and check Voltage.
  • Page 67 Check Point 5 : Check opening and closing operation of valve When valve is closed, If it is open, it has a temp. difference between Inlet and outlet. it has no temp. difference between inlet and outlet. CLOSE OPEN Example : Hot gas Example : Hot gas Pipe (In) Pipe (In)

  • Page 69: Appending Data

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

  • Page 70: 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 71 Set the vertical direction adjusting scope. For AU type Factory setting) Setting Description Function Number Setting Value Standard Upward To prevent from draft, we recommend using "upward mode". In certain condition, the ceiling may become dirty. In such case, we recommend using the optional "PANEL SPACER KIT".
  • Page 72 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 Lower control 1-6.

  • Page 73: Switching Remote Control Unit Signal Codes

    3-1-2 Switching Remote Control Unit Signal Codes Confirm the setting of the remote control unit signal code and the printed circuit board setting. If these are not confirmed, the remote control unit can not be used to operate for the air conditioner. Factory setting) Jumper wire Remote control unit...

  • Page 74: Procedures To Change The Function Setting For Wireless Rc

    3-1-3 Procedures to change the Function Setting for wireless RC This procedure changes to the function settings used to control the indoor unit 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 75 STEP 2 Selecting the Function Number and Setting Value (1) Press the SET TEMP. ( ) buttons to select the function number. (Press the MODE button to switch between the left and right digits.) (2) Press the FAN button to proceed to setting the value. (Press the FAN button again to return to the function number selection.) (3) Press the SET TEMP.
  • Page 76 3-1-4 Procedures to change the Function Setting for Wired RC 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 77 3-1-5 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 78: External Input & Output

    3-2. EXTERNAL INPUT & OUTPUT EXTERNAL INPUT Start / stop input Corresponding indoor units : All indoor units Contents of operation : The air conditioner can be remotely operated by means of the following on-site work. Operation is started at the following contents by adding the contact input of a commercial ON/OFF switch to a connecter (CN102) on the external control PC board and turning it ON.
  • Page 79 EXTERNAL OUTPUT External electrical heater control output Corresponding indoor units : Duct type Contents of operation : A signal linked to heating operation, indoor fan ON, and compressor ON can be output. * Signal ON / OFF is switched according to the set temperature and room temperature difference.
  • Page 80 Fresh air control output Corresponding indoor units : All indoor units Contents of operation : A signal linked to air conditioner indoor fan ON can be output. * However, signal becomes OFF during cold air prevention control operation. Circuit diagrom example Indoor control PC board Relay circuit...
  • Page 81 Operation status output Corresponding indoor units : All indoor units Contents of operation : An air conditioner operation status signal can be output. Circuit diagram example Indoor control PC board Relay circuit Display CN103 5 to 24V Relay power supply Signal Procured at the site Air conditioner...

  • Page 82: Thermistor Resistance Values

    3-3. THERMISTOR RESISTANCE VALUES Room temperature thermistor Indoor heat exchanger thermistor Characteristics of room temperature thermistor Tempe F Tempe C Resistance(K ) Voltage(V) Tempe F Tempe C Resistance(K ) Voltage(V) 40.00 32.0 33.62 1.15 32.0 176.03 1.10 35.00 41.0 25.93 1.39 41.0 134.23...
  • Page 83 Outdoor heat exchanger thermistor Outdoor Temprature thermistor Characteristics of heat exchanger thermistor (Outdoor) Tempe F Tempe C Resistance(K ) Voltage(V) Tempe F Tempe C Resistance(K ) Voltage(V) 100.00 -30.0 88.42 0.25 -30.0 181.60 0.87 -22.0 -22.0 -13.0 -25.0 64.89 40.341 -13.0 -25.0 133.30...
  • Page 85 1116,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan Apr. 2010 Printed in Japan...

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