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Fujitsu AB*A30LBT Service Instruction

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SERVICE
INSTRUCTION
R410A
SPLIT TYPE
ROOM AIR CONDITIONER
Large Ceiling
INVERTER
Models Indoor unit Outdoor unit
AB*A30LBT
AB*A36LBT
type
AO*A30LBTL
AO*A36LBTL
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Summary of Contents for Fujitsu AB*A30LBT

  • Page 1 SPLIT TYPE ROOM AIR CONDITIONER Large Ceiling type INVERTER SERVICE INSTRUCTION Models Indoor unit Outdoor unit AB*A30LBT AO*A30LBTL AB*A36LBT AO*A36LBTL 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 05-01 5-1-1 COOLING CAPACITY CONTROL..............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 07-01 7-1-1 INDOOR UNIT DISPLAY..................
  • Page 4 R410A Large Ceiling type INVERTER 1 . SPECIFICATIONS...

  • Page 5: Specifications Specifications

    1. SPECIFICATIONS INDOOR UNIT CEILING MODEL Type INVERTER HEATPUMP Model name AB A30LBT AB A36LBT Power source 230V 50Hz Available voltage range 198-264V 50Hz Cooling European energy label Heating 8.50 9.40 Rated BTU/h 29000 32100 Cooling 2.80 - 10.00 2.80 - 11.20 Min.

  • Page 6: Dimensions

    OUTDOOR UNIT Type INVERTER HEATPUMP Model name AO A30LBTL AO A36LBTL 230V 50Hz Power source 198-264V 50Hz Available voltage range Starting current 15.0 15.0 Cooling 3600 4000 Airflow rate Heating 3800 3800 Propeller × 1 Type × Q'ty Motor output Cooling Sound pressure level dB(A)

  • Page 7: Dimensions

    R410A Large Ceiling type INVERTER 2 . DIMENSIONS...
  • Page 8 2. DIMENSIONS MODEL : AB A 30 / 36 LBT (Unit : mm) Top view Side view Rear view Suspension bolt pitch 1,600 Dimensions (Space Required for Installation) INDOOR UNIT (Top view) Suspension bolt should extend INDOOR UNIT outward 30 to 75. Refrigerant piping flare connection (Gas) Refrigerant piping flare connection (Liquid) Drain piping connection...
  • Page 9 2. DIMENSIONS MODEL : AO A 30 / 36 LBTL (Unit : mm) Top view Front view Side view Air flow Bottom view MOUNTING POSITION When there are obstacles at the When there are obstacles at the When there are obstacles at the back or front sides.

  • Page 10: Refrigerant System Diagram

    R410A Large Ceiling type INVERTER 3 . REFRIGERANT SYSTEM DIAGRAM...

  • Page 11: Refrigerant Circuit

    3. REFRIGERANT CIRCUIT MODEL : AO A 30 / 36 LBTL 03 - 01...

  • Page 12: Circuit Diagram

    R410A Large Ceiling type INVERTER 4 . CIRCUIT DIAGRAM...

  • Page 13: Circuit Diagrams

    4. CIRCUIT DIAGRAMS INDOOR UNIT MODEL : AB A30 / 36 LBT 04 - 01...
  • Page 14 OUTDOOR UNIT MODEL : AO A30 /36 LBTL 04 - 02...

  • Page 15: Description Of Each Control Operation

    R410A Large Ceiling type INVERTER 5 . DESCRIPTION OF EACH CONTROL OPERATION...

  • Page 16: Cooling Operation

    5. DESCRIPTION OF EACH CONTROL 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. The maximum frequency is limited in the range shown in Figure 1 based on the fan speed mode and the outdoor temperature.

  • Page 17: 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. The maximum frequency is limited in the range shown in Figure 2 based on the outdoor temperature. * If the room temperature is lower 3 °C than a set temperature, the compressor operation frequency will attain to maximum frequency.

  • Page 18: 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 ) [ AB*A30LBTL ] [ AB*A36LBTL ] Operating frequency...

  • Page 19: Auto Changeover Operation

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

  • Page 20: Indoor Fan Control

    5-5. INDOOR FAN CONTROL 1. Fan speed ( Table 5 : Indoor Fan Speed ) AB*A30LBT AB*A36LBT Operation mode Air flow mode Speed (rpm) Operation mode Air flow mode Speed (rpm) Cooling 1000 Cooling 1100 Heating 1000 Heating 1100 1000...
  • Page 21 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 22: Outdoor Fan Control

    5-6. OUTDOOR FAN CONTROL 1. Outdoor Fan Motor 1-1. For AO*A30/ 36LBTL ( AB*A30 / 36LBT , AR*A30 / 36LBTU ) Following table shows the fan speed of the outdoor unit. Table 6 : Fan speed of the outdoor unit Outdoor temperature [Ta] Cooling Ta >...

  • Page 23: Louver Control

    5-7. LOUVER CONTROL (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 24 (Function Range) Each time the button is pressed, the air direction range will change as follows: (Fig.10 : 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 (AB*A30 / 36LBT) When the swing signal is received from the remote controller, the horizontal louver starts to swing.

  • Page 25: Compressor Control

    5-8. 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 AB*A30LBT 23Hz 94Hz 120Hz 23Hz 51Hz AB*A36LBT 2.

  • Page 26: Timer Operation Control

    5-9. TIMER OPERATION CONTROL 5-9-1 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...
  • Page 27 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 28: Electronic Expansion Valve Control

    (1) Pulse range of EEV Operation Pulse range Cooling/ Dry 480 pulse AB*A30LBT AB*A36LBT Heating 480 pulse (2) The EEV is set up at 480 pulses when the compressor is stopped. (3) Intialization (Input of 528 pulses toward closing direction) is operated under the following condition.

  • Page 29: 4-Way Valve Extension Select

    5-13. 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. 5-14. AUTO RESTART When the power was interrupted by a power failure, etc.

  • Page 30: Compressor Preheating

    5-17. COMPRESSOR PREHEATING When the outdoor heat exchanger temperature is lower than 5°C and the heating operation has been stopped for 30 minutes, power is applied to the compressor and the compressor is heated. (By heating the compressor, warm air is quickly discharged when operation is started.) When operation was started, and when the outdoor temperature rises to 7°C or greater, preheating is ended.
  • Page 31 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 32: 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 33: 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 34: Various Protections

    5-21. VARIOUS PROTECTIONS 1. DISCHARGE GAS TEMPERATURE OVER RISE PREVENTION CONTROL 1-1. For AO*A 30/ 36LBTL 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 35: Compressor Stop Control

    3. ANTIFREEZING CONTROL (Cooling and Dry mode) The compressor frequency 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 14 : Anti-freezing Protection Operation / Release Temperature) Outdoor temperature Temperature...

  • Page 36: Refrigerant Caution -R410A

    R410A Large Ceiling type INVERTER 6 . REFRIGERANT CAUTION -R410A-...

  • Page 37: 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 38: 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 39: 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 40: 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 41: 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 42 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 43 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 44: 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 45: Trouble Shooting

    R410A Large Ceiling type INVERTER 7 . TROUBLE SHOOTING...

  • Page 46: Error Display

    7. TROUBLESHOOTING 7-1 ERROR DISPLAY 7-1-1 INDOOR UNIT DISPLAY The OPERATION, TIMER and FILTER lamps operate as follows according to the error contents. Error display Trouble Error contents shooting OPERATION TIMER FILTER (GREEN) (ORANGE) (RED) Communication error 2 times (Serial reverse transfer error) 3 times Outdoor communication signal error 4 times...

  • Page 47: Wired Remote Controller Display

    7-1-2 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 MOTU WETH FR SA ex.
  • Page 48 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 49: Outdoor Unit Display

    7-1-3 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 Compressor rotor location cannot detect 0.1sec ON / 2sec OFF 18,30 Outdoor unit sensor error 0.1sec ON / 0.1sec OFF 5,7,8 Outdoor unit fan motor error...

  • Page 50: Trouble Shooting With Error Code

    7-2 TROUBLE SHOOTING WITH ERROR CODE Trouble shooting 1 Indicate or Display: INDOOR UNIT Error Method: Indoor Unit : Operation LED: OFF, Timer LED: 8 times blink, Filter LED : OFF Communication Error Outdoor Unit : No indication (Indoor unit Remote control) ERROR CODE : E : 00 Detective details:...

  • Page 51: Communication Error (Serial Reverse Transfer Error)

    Indicate or Display: Trouble shooting 2 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: OFF, Timer LED: 2 or 3 times blink, Filter LED : OFF Communication Error Outdoor Unit : No indication (Serial Reverse Transfer Error) ERROR CODE : E : 01 Detective details: Detective Actuators: When the indoor unit cannot receive the serial signal from Outdoor unit...

  • Page 52: Room Temperature Sensor Error

    Indicate or Display: Trouble shooting 3 Indoor Unit : Operation LED: 2 times blink, Timer LED: 2 times blink, INDOOR UNIT Error Method: Filter LED : OFF Outdoor Unit : No indication Room Temperature Sensor Error ERROR CODE : E : 02 Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit...

  • Page 53: Indoor Heat Exchanger Temperature Sensor Error

    Indicate or Display: Trouble shooting 4 INDOOR UNIT Error Method: Indoor Unit : Operation LED: 2 times blink, Timer LED: 3 times blink, Filter LED : OFF INDOOR UNIT Indoor Heat Exchanger Temperature Outdoor Unit : No indication Sensor Error ERROR CODE : E : 04 Detective Actuators: Detective details:...

  • Page 54: Outdoor Heat Exchanger Temperature Sensor(Outlet) Error

    Indicate or Display: Trouble shooting 5 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: 3 times blink, Timer LED: 3 times blink, Filter LED : OFF Outdoor Heat Exchanger Temperature Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF Sensor (Outlet) Error ERROR CODE : E : 06 Detective Actuators: Detective details:...

  • Page 55: Water Drain Abnormal

    Trouble shooting 6 Indicate or Display: INDOOR UNIT Error Method: Indoor Unit : Operation LED: 2 times blink, Timer LED: 6 times blink, Filter LED : OFF Water Drain Abnormal Outdoor Unit : No indication ERROR CODE : E : 09 Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit...

  • Page 56: Outdoor Temperature Sensor Error

    Trouble shooting 7 Indicate or Display: OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: 3 times blink, Timer LED: 4 times blink, Filter LED : OFF Outdoor Temperature Sensor Error Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF ERROR CODE : E : 0A Detective Actuators: Detective details: Outdoor Unit Main PCB Circuit...

  • Page 57: Outdoor Discharge Pipe Temperature Sensor Error

    Indicate or Display: Trouble shooting 8 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: 3 times blink, Timer LED: 2 times blink, Filter LED : OFF Outdoor Discharge Pipe Temperature Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF Sensor Error ERROR CODE : E : 0C Detective details: Detective Actuators:...

  • Page 58: Discharge Temperature Error

    Indicate or Display: Trouble shooting 9 Indoor Unit : Operation LED: 7 times blink, Timer LED: 2 times blink, OUTDOOR UNIT Error Method: Filter LED : OFF INDOOR UNIT Discharge temperature error Outdoor Unit : LED continuously lighting ERROR CODE : E : 0F Detective details: Detective Actuators: When the discharge temperature becomes higher than 110°C...

  • Page 59: Indoor Eeprom Abnormal (Model No.)

    Indicate or Display: Trouble shooting 10 INDOOR UNIT Error Method: Indoor Unit : Operation LED: Blink, Timer LED: Blink, Filter LED : Blink Indoor EEPROM abnormal Outdoor Unit : No indication (Model No.) ERROR CODE : E : 11 Detective details: Detective Actuators: Indoor Unit Controller PCB circuit When the model information being read from EEPROM has...

  • Page 60: Indoor Fan Motor Abnormal

    Indicate or Display: Trouble shooting 11 INDOOR UNIT Error Method: Indoor Unit : Operation LED: 6 times blink, Timer LED: 2, 3 times blink, Filter LED : OFF Indoor Fan Motor abnormal Outdoor Unit : No indication ERROR CODE : E : 12 Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit...

  • Page 61: Outdoor Communication Signal Error (Forward Transfer Signal Error)

    Indicate or Display: Trouble shooting 12 INDOOR UNIT Error Method: Indoor Unit : Operation LED: OFF, Timer LED: 4, 5 times blink, Filter LED : OFF Outdoor Communication Signal Error Outdoor Unit : No indication (Forward Transfer Signal Error) ERROR CODE : E : 13 Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit...

  • Page 62: Compressor Temperature Sensor Error

    Indicate or Display: Trouble shooting 13 Indoor Unit : Operation LED: 3 times blink, Timer LED: 8 times blink, Filter LED : OFF OUTDOOR UNIT Error Method: Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF Compressor Temperature Sensor Error ERROR CODE : E : 15 Detective Actuators: Detective details: When Compressor Temperature Thermistor open or short-circuit is...

  • Page 63: Pressure Switch Error

    Trouble shooting 14 Indicate or Display: OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: 7 times blink, Timer LED: 5 times blink, Filter LED : OFF Pressure Switch Error Outdoor Unit : No indication ERROR CODE : E : 16 Detective details: Detective Actuators: Outdoor Unit Main PCB Circuit...

  • Page 64: Ipm Error

    Indicate or Display: Trouble shooting 15 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: 5 times blink, Timer LED: 2 times blink, Filter LED : OFF Outdoor Unit : LED 0.5sec ON/ 0.5sec OFF IPM error (Permanent Stop) ERROR CODE : E : 17 Detective details: Detective Actuators: When more than normal operating current to IPM in Main PCB flows,...

  • Page 65: Active Filter Module (Afm) Error

    Indicate or Display: Trouble shooting 17 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: 8 times blink, Timer LED: 2, 3 times blink, Filter LED : OFF Active Filter Module (AFM) error Outdoor Unit : LED 5sec ON/ 0.1sec OFF ERROR CODE : E : 19 Detective details: Detective Actuators:...

  • Page 66: Compressor Rotor Location Cannot Detect (Permanent Stop)

    Indicate or Display: Trouble shooting 18 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: 5 times blink, Timer LED: 5 times blink, Filter LED : OFF Compressor rotor location cannot detect Outdoor Unit : LED 0.1sec ON/ 2sec OFF (Permanent Stop) ERROR CODE : E : 1A Detective details:...

  • Page 67: Outdoor Unit Fan Motor Error

    Trouble shooting 19 Indicate or Display: OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: 5 times blink, Timer LED: 6 times blink, Filter LED : OFF Outdoor Unit Fan Motor Error Outdoor Unit : LED 5sec ON/ 5sec OFF ERROR CODE : E : 1b Detective Actuators: Detective details:...

  • Page 68: Indoor Manual Auto Switch Error

    Indicate or Display: Trouble shooting 21 INDOOR UNIT Error Method: Indoor Unit : Operation LED: 4 times blink, Timer LED: 2 times blink, Filter LED : OFF Indoor manual auto switch error Outdoor Unit : No indication ERROR CODE : E : 20 Detective Actuators: Detective details: Indoor Unit Controller PCB Circuit...
  • Page 69 Indicate or Display: Trouble shooting 22 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: 7 times blink, Timer LED: 3 times blink, Filter LED : OFF Excessive high pressure protection Outdoor Unit : No indication on cooling ERROR CODE : E : 24 Detective details: Detective Actuators: Excessive high pressure protection on cooling mode has been...

  • Page 70: Pfc Circuit Error

    Indicate or Display: Trouble shooting 23 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: 8 times blink, Timer LED: 4 times blink, Filter LED : OFF PFC circuit error Outdoor Unit : No indication ERROR CODE : E : 25 Detective Actuators: Detective details: When inverter output DC voltage is higher than 425V for over 3 seconds,...

  • Page 71: Communication Error (Main Pcb Display Pcb)

    Indicate or Display: Trouble shooting 24 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: OFF, Timer LED: 6 times blink, Filter LED : OFF Communication Error Outdoor Unit : No indication (Main PCB ---> Display PCB) ERROR CODE : E : 26 Detective Actuators: Detective details: When the Display PCB cannot receive the signal from the Main PCB.
  • Page 72 Indicate or Display: Trouble shooting 25 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: OFF, Timer LED: 7 times blink, Filter LED : OFF Communication Error Outdoor Unit : No indication (Main PCB <--- Display PCB) ERROR CODE : E : 27 Detective Actuators: Detective details: When the Main PCB cannot receive the signal from the Display PCB.

  • Page 73: Compressor Temperature Error

    Indicate or Display: Trouble shooting 27 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: 7 times blink, Timer LED: 6 times blink, Filter LED : OFF Compressor temperature error Outdoor Unit : No indication ERROR CODE : E : 2b Detective details: Detective Actuators: When the compressor temperature becomes higher than 110°C,...

  • Page 74: 4-Way Valve Error

    Indicate or Display: Trouble shooting 28 INDOOR UNIT Error Method: Indoor Unit : Operation LED: 7 times blink, Timer LED: 4 times blink, Filter LED : OFF 4-way valve error Outdoor Unit : No indication ERROR CODE : E : 2c Detective Actuators: Detective details: When the indoor heat exchanger temperature is compared with...
  • Page 75 Indicate or Display: Trouble shooting 30 OUTDOOR UNIT Error Method: Indoor Unit : Operation LED: 5 times blink, Timer LED: 5 times blink, Filter LED : OFF Compressor Start-up error Outdoor Unit : LED 0.1sec ON/ 2sec OFF (Permanent Stop) ERROR CODE : E : 1A Detective Actuators: Detective details:...

  • Page 76: 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 77 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 78 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 79 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 80 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 81: 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 82 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 (WHITE) W305 MAIN PCB W304 W303 (BLACK) (RED) WHITE BLACK...
  • Page 83 SERVICE PARTS INFORMATION 3 Active Filter Module Check Point 1 : Check Open or Short-circuit and Diode (D1) Remove connector, check the open or short-circuit and the diode in the module Check the open or short-circuit Terminal Resistance value Tester(+) Tester(-) 360k 720k...
  • Page 84 SERVICE PARTS INFORMATION 4 Outdoor unit Electronic Expansion Valve ( EEV ) Check Point 1 : Check Connections Check connection of connector (CN700) ( Loose connector or open cable ) EXPANSION VALVE COIL WHITE 654321 YELLOW ORANGE CN700 BLUE BROWN Check Point 2 : Check Coil of EEV Check Point 3 : Check Voltage from Main PCB.

  • Page 85: Appending Data

    R410A Large Ceiling type INVERTER 8 . APPENDING DATA...

  • Page 86: Capacity Table

    8. APPENDING DATA 8-1. CAPACITY TABLE COOLING CAPACITY MODEL : AB A30LBT 27.7 Indoor temperature °CDB °CWB °CDB 8.60 6.53 1.32 9.59 6.57 1.35 9.91 7.14 1.35 10.57 7.17 1.37 10.89 7.74 1.37 11.55 7.71 1.39 12.20 8.21 1.40 8.38 6.44 1.71 9.33...
  • Page 87 HEATING CAPACITY This table is created using the maximum capacity. MODEL : AB A30LBT 27.7 Indoor temperature °CDB °CDB °CWB 8.22 3.38 8.02 3.45 7.83 3.52 7.63 3.59 7.44 3.67 8.79 3.39 8.58 3.46 8.37 3.53 8.16 3.60 7.95 3.67 9.54 3.40 9.31...

  • Page 88: Operation Range

    8-2. OPERATION RANGE MODEL : AB*A30 / 36LBT / AO*A30 / 36LBTL Operation Range Mode Indoor humidity Outdoor temperature Indoor temperature Cooling About 80% or less -15 to 46°C 18 to 32°C Heating -15 to 24°C About 30°C or less 08-03...

  • Page 89: Electric Characteristics

    8-3. ELECTRIC CHARACTERISTICS Model Name AB*A30LBT AB*A36LBT Voltage Power Supply Frequency Max Operating Current 17.0 20.0 Circuit breaker *1)Wiring Spec. Connection Cable 1.5 - 2.5 1.5 - 2.5 Limited wiring length AO*A30LBTL AO*36LBTL Model Name Voltage Power Supply Frequency Max Operating Current Starting current 15.0...

  • Page 90: Safety Device

    8-4. SAFETY DEVICE INDOOR UNIT Model Protection form AB*30LBT AB*36LBT 3.15A 250V Circuit protection Current fuse (PCB) 140±20°C OFF Fan motor protection Thermal protection program 110±20°C ON OUTDOOR UNIT Model Protection form AO A30L AO A36L 25A 250V Current fuse (NEAR THE TERMINAL) Current fuse 10A 250V...

  • Page 91: Function Setting

    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 92: Switching Remote Control Unit Signal Codes

    1-5. Setting the Heater Room Temperature Correction Depending on the installed environment, the room temperature sensor may require a correction. The settings may be changed as shown in the table below. Factory setting) Setting Description Function Number Setting Value Standard Lower control Slightly warmer control Warmer control...

  • Page 93: Procedures To Change The Function Setting For Wireless Rc

    8-5-3 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 94 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 95: Procedures To Change The Function Setting For Wired Rc

    8-5-4 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 96: Wired Remote Controller

    8-5-5 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 97: Installation Manual

    R410A Large Ceiling type INVERTER 9 . INSTALLATION MANUAL...
  • Page 98 DMS00081662-01 CERTIFICATION This drawing was released by FGL.
  • Page 99 DMS00081662-01 CERTIFICATION This drawing was released by FGL.
  • Page 100 1116,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan June. 2007 Printed in Japan...

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