Fujitsu AS* A09LEC Service Instruction
  1. Manuals
  2. Brands
  3. Fujitsu Manuals
  4. Air Conditioner
  5. AS* A09LEC
  6. Service instruction
Fujitsu AS* A09LEC Service Instruction

Fujitsu AS* A09LEC Service Instruction

Split type room air conditioner wall mounted type
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
SERVICE
INSTRUCTION
R410A
SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTED
INVERTER
Models
Indoor unit
AS* A09LEC
AS* A12LEC
type
Outdoor unit
AO* R09LECN
AO* R12LECN

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the AS* A09LEC and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Fujitsu AS* A09LEC

Summary of Contents for Fujitsu AS* A09LEC

  • Page 1 SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTED type INVERTER SERVICE INSTRUCTION Models Indoor unit Outdoor unit AS* A09LEC AO* R09LECN AS* A12LEC AO* R12LECN 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......................01-03 4. AUTO CHANGEOVER OPERATION................01-04 5. INDOOR FAN CONTROL....................01-05 6. OUTDOOR FAN CONTROL..................01-07 7. LOUVER CONTROL..................... 01-08 8. COMPRESSOR CONTROL..................01-09 9.

  • Page 3: Description Of Each Control Operation

    R410A WALL MOUNTED type INVERTER 1 . DESCRIPTION OF EACH CONTROL OPERATION...

  • Page 4: Cooling Operation

    1. COOLING OPERATION 1-1 COOLING CAPACITY CONTROL A sensor (room temperature thermistor) built in the indoor unit body 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...

  • Page 5: Heating Operation

    2. HEATING OPERATION 2-1 HEATING CAPACITY CONTROL A sensor (room temperature thermistor) built in the indoor unit body 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 by 3°C than a set temperature, the compressor operation...

  • Page 6: Dry Operation

    3. DRY OPERATION 3-1 INDOOR UNIT CONTROL The compressor rotation frequency shall change according to the temperature, set temperature, and room temperature variation which the room temperature sensor of the indoor unit body has detected as shown in the Table 3. However, after the compressor is driven, the indoor unit shall run at operation frequency of 52rps (for ASYA09LEC) or 61rps (for ASYA12LEC) , for a minute.

  • Page 7: Auto Changeover Operation

    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 switched in accordance with temperature changes. The temperature can be set between 18°C 30°C...

  • Page 8: Indoor Fan Control

    5. INDOOR FAN CONTROL 1. FAN SPEED ( Table 5 : Indoor fan speed ) ASYA09/12LEC Operation mode Air flow mode Speed (rpm) 1440 Heating 1370 1200 Quiet Cool air prevention S-Lo Cooling 1440 1200 Quiet X zone: 680 J zone: 650 2.
  • Page 9 6. COOL AIR PREVENTION CONTROL (Heating mode) The maximum value of the indoor fan speed is set as shown in Figure 7, based on the detected temperature by the indoor heat exchanger sensor on heating mode. (Fig.7 : Cool air prevention control) <Before 7 minutes upon running the compressor>...

  • Page 10: Outdoor Fan Control

    6. OUTDOOR FAN CONTROL 1. Outdoor Fan Motor Following table shows the type of the outdoor fan motor. The control method is different between AC motor and DC motor. ( Table7 : Type of Motor ) AC Motor DC Motor ASYA09/ 12LEC 2.

  • Page 11: Louver Control

    7. LOUVER CONTROL 1. VERTICAL LOUVER CONTROL (Function Range) Each time the button is pressed, the air direction range will change as follow: (Fig 10: Air Direction Range) Cooling / Dry mode Heating mode 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 12: Compressor Control

    8. COMPRESSOR CONTROL 1. OPERATION SPEED RANGE The operation speed of the compressor is different based on the operation mode as shown in the table 10. (Table 10 : Compressor operation speed range) Cooling Heating Minimum Maximum Minimum Maximum Minimum Maximum ASYA09LEC 18rps...

  • Page 13: Timer Operation Control

    9. TIMER OPEARTION CONTROL 9-1 WIRELESS REMOTE CONTROLLER The table 11 shows the available timer setting based on the product model. (Table 11 : Timer setting) ON TIMER / OFF TIMER PROGRAM TIMER SLEEP TIMER ASYA09/12LEC 1. OPEARTION FREQUENCY RANGE OFF timer : When the clock reaches the set time, the air conditioner will be turned off.
  • Page 14 3. SLEEP TIMER If the sleep is set, the room temperature is monitored and the operation is stopped automatically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time ON. In the cooling operation mode When the sleep timer is set, the setting temperature is increased 1°C.
  • Page 15 9-2 WIRED REMOTE CONTROLLER (OPTION) The table12 shows the available timer setting based on the product model. ( Table12 : Timer Setting ) ON TIMER / OFF TIMER WEEKLY TIMER TEMPERATURE SET BACK TIMER ASYA09/ 12LEC ON TIMER / OFF TIMER Same to 9-1 1.ON TIMER / OFF TIMER and shown in those.

  • Page 16: Electronic Expansion Valve Control

    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 17: Manual Auto Operation (Indoor Unit Body Operation)

    15. MANUAL AUTO OPERATION (Indoor unit body operation) If MANUAL AUTO Button is set, the operation is controlled as shown in Table13. If the remote control is lost or battery power dissipated, this function will work without the remote control. (Table 13) Manual auto operation OPERATION MODE...

  • Page 18: C Heat Operation

    19. 10°C HEAT OPERATION The 10°C HEAT operation functions by pressing 10°C HEAT button on the remote controller. The 10°C HEAT operation is almost the same operation as below settings. ( Table16 ) Mode Heating Setting temperature 10°C Fan mode AUTO 20.

  • Page 19: Defrost Operation Control

    22. DEFROST OPERATION CONTROL 1. CONDITION OF STARTING THE DEFROST OPERATION The defrost operation starts when the outdoor heat exchanger temperature sensor (Tn) detects the temperature lower than the values shown in Table18. ( Table 18 : Condition of starting Defrost Operation ) Compressor integrating operation time time defrosting after starting operation...
  • Page 20 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 21: Off Defrost Operation Control

    23. OFF DEFROST OPEARTION 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 22: Various Protections

    24. VARIOUS PROTECTIONS 1. DISCHARGE GAS TEMPERATURE OVERRISE PREVENSION CONTROL The discharge discharge thermistor will detect discharge gas temperature. 1-1. When the discharge temperature becomes higher than Temperature , the compressor speed is decreased 20rps, and it continues to decrease the speed for 20rps every 120seconds until the temperature becomes lower than Temperature .
  • Page 23 3. ANTIFREEZING CONTROL (Cooling and Dry mode) The compressor speed is decreased on cooling & dry mode when the indoor heat exchanger temperature sensor detects the temperature lower than 4°C Then, the anti-freezing control is released when it becomes higher than Release temperature A. (Table 22 : Anti-freezing protection operation / Release temperature) Outdoor temperature zone Release temperature A...

  • Page 25: Trouble Shooting

    R410A WALL MOUNTED type INVERTER 2 . TROUBLE SHOOTING...

  • Page 26: Error Display

    2. TROUBLE SHOOTING 2-1 ERROR DISPLAY 2-1-1 INDOOR UNIT AND WIRED REMOTE CONTROLLER DISPLAY 1. ERROR DISPLAY Please refer the blinking pattern as follows. Indoor Unit : AS*A09LEC, AS*A12LEC The OPERATION, TIMER lamps operate as follows according to the error contents. Wired Remote Indoor Unit display Trouble...

  • Page 27: Wired Remote Controller Display (Option)

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

  • Page 28: 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 Error (Serial Reverse Transfer Error) Detective Actuators: Detective details: When the indoor unit cannot properly receive the serial signal from Outdoor unit Main PCB outdoor unit for 10 seconds or more.
  • Page 29 Trouble shooting 2 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Serial Error (Serial Forward Transfer Error) Detective Actuators: Detective details: When the indoor unit cannot properly receive the serial signal from Indoor unit Controller PCB outdoor unit for 10 seconds or more.
  • Page 30 Trouble shooting 3 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Wired Remote Controller Error Detective Actuators: Detective details: Indoor unit Controller PCB When the indoor unit cannot properly receive the signal from Wired Remote Controller (Option) Wired Remote Controller for 1 minute or more.
  • Page 31 Trouble shooting 4 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Room Temperature Thermistor Error Detective Actuators: Detective details: Indoor unit Controller PCB When Room Temperature Thermistor open or short-circuit is Room temperature thermistor detected at power ON. Forecast of Cause : 1.
  • Page 32 Trouble shooting 5 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor Heat Exchanger Temperature Thermistor (Middle) Error Detective Actuators: Detective details: Indoor unit Controller PCB When Heat exchanger (MID) thermistor open or short-circuit is detected at power ON. Heat exchanger (MID) thermistor Forecast of Cause : 1.
  • Page 33 Trouble shooting 6 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Outdoor Discharge Pipe Temperature Thermistor Error Detective Actuators: Detective details: Outdoor unit Main PCB When Discharge pipe temperature thermistor open or short-circuit is detected at power ON or while running the compressor. Discharge pipe temperature thermistor Forecast of Cause : 1.
  • Page 34 Trouble shooting 7 Indicate or Display: OUTDOOR UNIT Error Method: Outdoor Heat Exchanger Temperature Refer to error code table. Thermistor Error Detective Actuators: Detective details: Outdoor unit Main PCB When Heat exchanger temperature thermistor open or short-circuit is detected at power ON or while running the compressor. Heat exchanger temperature thermistor Forecast of Cause : 1.
  • Page 35 Trouble shooting 8 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Outdoor Temperature Thermistor Error Detective Actuators: Detective details: Outdoor unit Main PCB When 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 36 Trouble shooting 9 Indicate or Display: 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 10 or Indicator PCB more seconds.
  • Page 37 Indicate or Display: Trouble shooting 10 OUTDOOR UNIT Error Method: INDOOR UNIT Refer to error code table. Main relay welded error Detective details: Detective Actuators: Outdoor unit Main PCB When the signal from the outdoor unit is input after 2min.20sec. from the Indoor unit Controller PCB time of operation stop under the Main relay is OFF condition.
  • Page 38 Trouble shooting 11 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Power Supply Frequency Detection Error Detective Actuators: Detective details: Indoor unit Controller PCB When power frequency is not detected by 4 seconds after power-on. Forecast of Cause: 1.
  • Page 39 Trouble shooting 12 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Over Current Protection Detective Actuators: Detective details: Inverter PCB When over current flows in , the compressor stops. Outdoor unit Main PCB After the compressor restarts, if the same error is repeated within Compressor 40sec, the compressor stops reappear.
  • Page 40 Trouble shooting 13 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. CT Error Detective Actuators: Detective details: When Input Current Sensor has detected 0A, Outdoor unit Main PCB while Inverter Compressor is operating at higher than 56rps, after 1minute upon starting the Compressor.
  • Page 41 Trouble shooting 14 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Compressor Location Detection Error 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 42 Trouble shooting 15 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Outdoor Unit Fan Error Detective details: Detective Actuators: When outdoor fan rotation speed is less than 100rpm in 20 seconds Outdoor unit Main PCB after fan motor starts, fan motor stops. Outdoor unit fan motor After fan motor restarts, if the same operation within 60sec is repeated 3 times in a row, compressor and fan motor stops.
  • Page 43 Trouble shooting 16 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Indoor Fan Motor Lock Error Indoor Fan Motor Rev. 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 or 0rps is continued more than 56 seconds.
  • Page 44 Trouble shooting 17 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Discharge Temperature Error Detective details: Detective Actuators: "Protection stop by "discharge temperature 110degC during compressor Discharge temperature thermistor operation"" generated 2 times within 24 hours. Outdoor unit Main PCB Forecast of Cause : 1.
  • Page 45 Trouble shooting 18 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. Excessive High Pressure Protection On Cooling Detective Actuators: Detective details: In cooling operation, after 1 minute or more compressor starts, Outdoor unit Main PCB when outdoor heat exchanger temperature is 67 °C and above. Outdoor unit fan motor Heat exchanger temp.
  • Page 46 Trouble shooting 19 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 Outdoor unit Main PCB the room temperature, and either following condition is detected Heat exchanger temperature thermistor continuously two times, the compressor stops.
  • Page 47 Trouble shooting 20 Indicate or Display: OUTDOOR UNIT Error Method: Refer to error code table. PFC circuit error Detective Actuators: Detective details: When inverter output DC voltage is higher than 415V for over Outdoor unit Main PCB 3 seconds, the compressor stops. If the same operation is repeated 5 times, the compressor stops permanently.
  • Page 48 Trouble shooting 21 Indicate or Display: INDOOR UNIT Error Method: Refer to error code table. Model Distinction Error (Indoor) Detective Actuators: Detective details: When power is on and there is some below case. Indoor unit Controller PCB 1. When model information of EEPROM is incorrect 2.

  • Page 49: Trouble Shooting With No Error Code

    2-3 TROUBLE SHOOTING WITH NO ERROR CODE Trouble shooting 22 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 50 Trouble shooting 23 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. >> If abnormal condition is found, correct it by referring to Installation Manual or Data &...
  • Page 51 Forecast of Cause: Trouble shooting 24 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 52 Trouble shooting 25 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 6. Heater Unit failure Check Point 1 : Check indoor unit Does indoor unit Fan run on high fan? Is Air Filter dirty? Is Heat Exchanger clogged?
  • Page 53 Trouble shooting 26 Forecast of Cause : 1. Abnormal installation(Indoor unit / outdoor unit) Abnormal Noise 2. Fan failure(Indoor unit / outdoor unit) 3. Compressor failure (Outdoor unit) Diagnosis method when abnormal noise is occurred Abnormal noise is coming from indoor unit. Abnormal noise is coming from outdoor unit.

  • Page 54: Service Parts Information

    2-4 SERVICE PARTS INFORMATION SERVICE PARTS INFORMATION 1 Compressor Diagnosis method of Compressor (If outdoor unit LED displays error, refer to Trouble shooting ) Abnormal noise Stops soon after starting up Does not start up Is there open or loose connection Check if vibration noise by Is there open or loose connection cable?
  • Page 55 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) C(W) S(V) (WHITE) (BLACK) Main PCB Inverter PCB BLACK WHITE Compressor R(U) (RED)
  • Page 56 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 BLUE CN40 ORANGE YELLOW WHITE Check Point 3 : Check Voltage from Main PCB. Check Point 2 : Check Coil of EEV Remove connector, check each winding Remove Connector and check Voltage (DC12V)
  • Page 57 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 58 SERVICE PARTS INFORMATION 6 Heater Unit Check Point 1 : Check Connections Check connection of connector ( Loose connector or open cable ) CN10 1 2 3 4 5 THERMOSTAT 1 2 3 4 5 (55°C) FUSE 250V5A BLACK BLACK BLACK BLACK WHITE...

  • Page 59: Appending Data

    R410A WALL MOUNTED type INVERTER 3 . APPENDING DATA...

  • Page 60: 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 61 1-4. Setting the Indoor room temperature sensor switching function (Only for Wired remote controller) The following settings are needed when use the control by Wired remote controller temperature sensor. Factory setting) Setting Description Function Number Setting Value * If setting value is "00" : Room temperature is controlled by the indoor unit temperature sensor. * If setting value is "01"...

  • Page 62: Procedures To Change The Function Setting For Wireless Rc

    3-1-2 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 63 Custom code setting for remote controller (1) Press the MODE button for more then 5 seconds. (2) Press the SET TEMP. ( ) buttons to change the signal code between Match the code on the display to the air conditioner signal code. (initially set to (3) Press the MODE button.

  • Page 64: Thermistor Resistance Values

    3-2. Thermistor Resistance Values 3-2-1 INDOOR UNIT Room temperature thermistor Indoor heat exchanger thermistor Temp ( C) Resistance(k ) Voltage(V) Temp ( C) Resistance(k ) Voltage(V) -10.0 58.2 0.73 -5.0 233.2 0.88 -5.0 44.0 0.93 176.0 1.10 33.6 1.15 134.2 1.36 25.9 1.39...

This manual is also suitable for:

As* a12lecAo* r09lecnAo* r12lecn

Table of Contents