Fujitsu AUXG45LRLB Service Instruction
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Fujitsu AUXG45LRLB Service Instruction

Fujitsu AUXG45LRLB Service Instruction

Cassette type inverter
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See also: Service Manual , Technical Manual
SERVICE
INSTRUCTION
R410A
SPLIT TYPE
ROOM AIR CONDITIONER
Cassette type
INVERTER
Models Indoor unit Outdoor unit
AUXG30LRLB
AUXG36LRLB
AUXG45LRLB
AUXG54LRLB
RCG30LRLB
RCG36LRLB
RCG45LRLB
RCG54LRLB
AO*G30LBTA
AO*G36LBTA
AO*G45LBTA
AO*G54LBTA
ROG30LBTA
ROG36LBTA
ROG45LBTA
ROG54LBTA

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Summary of Contents for Fujitsu AUXG45LRLB

  • Page 1 SPLIT TYPE ROOM AIR CONDITIONER Cassette type INVERTER SERVICE INSTRUCTION Models Indoor unit Outdoor unit AO*G30LBTA AUXG30LRLB AO*G36LBTA AUXG36LRLB AO*G45LBTA AUXG45LRLB AO*G54LBTA AUXG54LRLB ROG30LBTA RCG30LRLB ROG36LBTA RCG36LRLB ROG45LBTA RCG45LRLB ROG54LBTA RCG54LRLB R410A...

  • Page 2: Table Of Contents

    CONTENTS 1. SPECIFICATIONS 1. DESCRIPTION OF EACH CONTROL OPERATION 1-1 COOLING OPERATION.................... 01-01 1-2 HEATING OPERATION..................... 01-02 1-3 DRY OPERATION...................... 01-03 01-04 1-4 AUTO CHANGEOVER OPERATION................ 1-5 INDOOR FAN CONTROL..................01-06 1-6. AIR FLOW DIRECTION CONTROL 01-09 .................................... 1-7 OUTDOOR FAN CONTROL 01-10 01-11...

  • Page 3: Description Of Each Control Operation

    R410A Cassette type INVERTER 1 . DESCRIPTION OF EACH CONTROL OPERATION...

  • Page 4: 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. * If the room temperature is 6.0°C higher than a set temperature, the compressor operation frequency will attain to maximum performance.

  • Page 5: 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 frequency of the compressor. * If the room temperature is lower 6.0°C than a set temperature, the compressor operation frequency will attain to maximum performance.

  • Page 6: Dry Operation

    1-3. DRY OPERATION 1-3-1 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 Table 3. ( Table 3 : Compressor frequency ) Operating frequency 30,36LRLB 45,54LRLB...

  • Page 7: 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, 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 0.5°C (wireless and 2WIRE remote controller) Or 1.0°C(3WIRE remote controller) steps.

  • Page 8: Heating Operation

    AUTO CHANGEOVER operation flow chart START Setting temperature Monitor mode Room temp. Ts+2 °C ? Room temp. Ts -2 °C ? Middle zone Auto change over is second or more? Operation mode before the monitor mode is cooling mode? Operation mode of HEATING OPERATION COOLING OPERATION outdoor unit : Cooling?

  • Page 9: Indoor Fan Control

    1-5. INDOOR FAN CONTROL 1. Fan speed ( Table 5 : Standard of Indoor Fan Speed ) *The following fan speed is a standard value. Operation Speed (rpm) Air flow mode mode 30LRLB 36LRLB 45LRLB 54LRLB Heating HIGH MED+ Quiet Cool air prevention Cooling HIGH...
  • Page 10 4. HEATING OPERATION Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Fig.6. On the other hand, if switched in [HIGH] ~ [LOW], the indoor motor will run at a constant airflow of [HEAT] operation modes LOW, MED, HIGH as showin in the Table 5.
  • Page 11 7. FAN CONTROL FOR ENERGY SAVING When the air flow setting except AUTO mode, the indoor fan motor will run as shown in Fig.8. ( Fig 8 : Indoor Fan Control) Compressor Indoor fan Setting air flow 480rpm S-Lo (sec) Factory setting) Setting Description Function Number...

  • Page 12: Air Flow Direction Control

    1-6. AIR FLOW DIRECTION CONTROL Individual control To independently can be set the airflow pattern of each louver as this image. (Fig.10 : Independent louver control image) This function is given priority to overall louver control. But this function is release during the following operation. Cold air prevention control Monitor mode on the auto change over operation Defrost operation...

  • Page 13: Outdoor Fan Control

    1-7. 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 ) Cooling Heating MODEL 850/ 800/ 620/ 550/ 500/ 450/ 400/ 30LBTA 900/ 850/ 800/ 620/ 550/ 450 320/ 300/ 250/ 200 900/ 800/ 620/ 550/ 500/ 450/ 400/...

  • Page 14: 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 7. (Table 7 : Compressor Operation Frequency Range) Coolin/Dry/Heating MODEL 30,36LBTA 16rps 90rps 2. OPERATION FREQUENCY CONTROL AT START UP The compressor frequency soon after the start-up is controlled as shown in Fig.9.
  • Page 15 1. OPERATION FREQUENCY RANGE The operation frequency of the compressor is different based on the operation mode shown in Table 8. (Table 8 : Compressor Operation Frequency Range) Cooling MODEL 45LBTA 16rps 100rps 16rps 110rps 54LBTA 16rps 110rps 16rps 110rps 2.

  • Page 16: Timer Operation Control

    1-9. TIMER OPERATION CONTROL 1-9-1 Wired Remote Controller UTY-RNR*Z1(2 wire remote controller) ON / TIMER OFF / TIMER WEEKLY TIMER *3 wire remote controller can be connected If 3 wire remote controller is connected, set the DIP-SW on the controller PCB Refer to the installation manual for detailed.
  • Page 17 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 18 1-9-2 Wireless Remote Controller (OPTION) AR- REJ1E 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 19 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 20: 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 and the outdoor temperature sensor. The pulse range of the electronic expansion valve control is 30,36LBTA 53 ~ 480 pulses (Cooling) and 40 ~ 480 pulses (Heating).

  • Page 21: 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 22: Pump Down

    1-15. PUMP DOWN For Model 45,54 14.2. Pump down procedure WARNING (1) Check the 3-way valves (both the liquid side and gas side) are opened. Never touch electrical components such as the terminal blocks except the button on (2) Turn the power on. the display board.

  • Page 23: Compressor Preheating

    1-16. COMPRESSOR PREHEATING When the outdoor temperature is lower than 20°C and the all operation mode 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 26°C or greater, preheating is ended.

  • Page 24: Defrost Operation Control

    1-19. DEFROST OPERATION CONTROL 1. CONDITION OF STARTING THE DEFROST OPERATION The defrost operation starts as shown in the following Table 11, 12, and 13. ( Table 11 : Condition of 1st defrost operation) Compressor integrating operation time 1st defrost Less than 22 minutes More than 22 minutes More than 62 minutes...
  • 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

    1-20. 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 27: Various Protections

    1-21. VARIOUS PROTECTIONS 1. DISCHARGE GAS TEMPERATURE OVERRISE PREVENTION CONTROL The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas temperature. When the discharge temperature becomes higher than Temperature ,the compressor frequency is decreased 10rps(30,36) 14rps(45,54), and it continues to decrease the frequency for 10/14rps every 120 seconds until the temperature becomes lower than Temperature .
  • Page 28 45,54LBTA [ Cooling ] (Control / Release) Outdoor unit fan speed (UP / LO) 850/800rpm 780/750rpm 750/700rpm 540/520rpm 360/340rpm 290/270rpm 480/ 0rpm 400/ 0rpm 350/ 0rpm 280/ 0rpm 50°C < Ta 6.5A/6.0A 46°C < Ta < 50°C 13.5A/13.0A 12.5A/12.0A 9.0A/8.5A 40°C <...
  • Page 29 5. LOW PRESSURE PROTECTION CONTROL (For Cooling mode) *Model 45,54LBTA 5-1. Low Pressure Protection 1 <After the compressor start-up and 1 minute has passed> (Fig 12 : Low pressure protection 1) (a).The detected value of pressure sensor is 0.02MPaG or less, Pressure Release of protection continues for 5 minutes, the compressor is stopped.

  • Page 30: Low Noise Operation

    1-22. LOW NOISE OPERATION eed are limited to reduce the operation noise The compressor speed and the outdoor unit fan sp by External Input. During the LOW NOISE OPERATION, "CURRENT OVERLOAD OPERATION", "ECONOMY OPERATION" and "PEAK CUT OPERATION" are effective, and the outdoor unit operates by lowest current of them. However, during the DEFROST OPERATION, the compressor operates by the speed for DEFROST OPERATION.

  • Page 31: Peak Cut Operation

    1-23. PEAK CUT OPERATION The Current Value is limited to reduce the power consumption by External Input. During the PEAK CUT OPERATION, "CURRENT OVERLOAD OPERATION", "ECONOMY OPERATION" and "LOW NOISE OPERATION" are effective, and the outdoor unit operates by lowest current of them. However, this function becomes invalid during DEFROST OPERATION.

  • Page 32: Drain Pump Operation

    1-25. DRAIN PUMP OPERATION 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 as show in Fig15. 3. When the compressor stops by the "Anti- freezing protection", the drain pump is turned off in 1 hour after the compressor stops.

  • Page 33: Description Of Display Unit

    1-26. DESCRIPTION OF DISPLAY UNIT For Model 45,54 1-26-1 Layout of Display Unit 1-00. ERROR HISTORY MODE Various settings can be adjusted by changing Push switches on the board of the outdoor unit. • ( Excerpt from the "INSTALATION MANUAL" ) LED DISPLAY Inverter cover PUSH SWITCH...
  • Page 34 1-26-2 Display mode 1-00. ERROR HISTORY MODE In this mode, the "Operation Condition" and "Error Code" can be displayed by Push Switch on outdoor unit PCB • : Light OFF : Light ON : Blinking 1 : 1 Time Blinking (Table :23 Procedure for Present Value) Power Error...
  • Page 35 : Light OFF : Light ON 1 : 1 Time Blinking (Table 25 : Detail of LED Display Data) Power Error Item No, Display Item Mode Compressor 1 ~ 15 Frequency 16 ~ 30 ( 0 ~ 95rps ) 31 ~ 45 46 ~ 60 61 ~ 75 76 ~ 90...
  • Page 36 : Light OFF : Light ON 1 : 1 Time Blinking Power Error Item No, Display Item Mode ~ -15 Outdoor Air -15 ~ -5 Temperature -5 ~ 5 ° ( -30 ~ 70 5 ~ 15 15 ~ 25 25 ~ 35 35 ~ 45 45 ~...

  • Page 37: Error History Mode

    1-26-3 Error history mode 1-00. ERROR HISTORY MODE In this mode, the history of abnormality that occurred in the past can be confirmed. • n : n Times Blinking (Table : 26 Procedure for History Mode ) : Light OFF : Light ON : Blinking 2 : 2 Times Blinking...

  • Page 38: Trouble Shooting

    R410A Cassette type INVERTER 2 . TROUBLE SHOOTING...

  • Page 39: Error Display

    2 ERROR DISPLAY 2-1 INDOOR UNIT AND WIRED REMOTE CONTROLLER DISPLAY Check the Error LED display on the Indoor unit (IR Receiver *Option ) 1. Check ECONOMY (Green) LED Blinking, it means the Error on the system. (Not brinking: No Error) 2.
  • Page 40 2-1-2 OUTDOOR UNIT DISPLAY For Model 45,54 You can determine the operating status by the lighting up and blinking of the LED lamp. Display when an error occurs. PUMP PEAK POWER/ DOWN NOISE ERROR MODE LED display part (L1) (L2) (L3) (L4) (L5)

  • Page 41: Trouble Shooting With Error Code

    2-2 TROUBLE SHOOTING WITH ERROR CODE Trouble shooting 1 Indicate or Display: Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Serial Communication Error Error code : 11 (L3) (L4) (L5) MODE (Serial Reverse Transfer Error) Detective Actuators: Detective details: When the indoor unit cannot receive the serial signal from Outdoor unit...
  • Page 42 Outdoor unit : Model 45.54 Trouble shooting 2 Indicate or Display: PUMP PEAK POWER INDOOR UNIT Error Method: DOWN NOISE ERROR MODE (L1) (L2) (L3) (L4) (L5) (L6) Serial Communication Error Error code : 11 (Serial Forward Transfer Error) Detective Actuators: Detective details: When the outdoor unit cannot properly receive the serial signal from Indoor unit Controller PCB...
  • Page 43 Trouble shooting 3 Indicate or Display: Outdoor unit : Model 45.54 INDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Wired Remote Controller Error code : 12 MODE (L1) (L2) (L3) (L4) (L5) (L6) Communication Error Detective Actuators: Detective details: Indoor unit Controller PCB When the indoor unit cannot properly receive the signal from Wired Remote Controller for 1 minute or more.
  • Page 44 Indicate or Display: Trouble shooting 4 Outdoor unit : Model 45.54 INDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 18 External communication error (L3) (L4) (L5) MODE Detective Actuators: Detective details: External communication error After receiving a signal from the external I/O PCB, the same a signal has not been received for 15sec Forecast of Cause : 1.
  • Page 45 Trouble shooting 5 Indicate or Display: Outdoor unit : Model 45.54 INDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 23 (L3) (L4) (L5) MODE Combination error Detective Actuators: Detective details: Indoor unit 1. When the outdoor unit type is multi. Forecast of Cause: 1.

  • Page 46: Trouble Shooting 6

    Trouble shooting 6 Indicate or Display: Outdoor unit : Model 45.54 INDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 26 MODE (L3) (L4) (L5) Indoor unit address setting error Detective details: Detective Actuators: When the address number set by auto setting and manual setting are mixed in Wired remote controller ( 2-Wire ) one RC group.
  • Page 47 Trouble shooting 7 Indicate or Display: Outdoor unit : Model 45.54 INDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Connection unit number error (Indoor Error code : 29 MODE (L3) (L4) (L5) unit in Wired remote controller system) Detective details: Detective Actuators: When the number of connecting indoor units are out of specified rule.
  • Page 48 Trouble shooting 8 Indicate or Display: Outdoor unit : Model 45.54 INDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE Indoor unit PCB model ERROR Error code : 32 MODE (L3) (L4) (L5) information error Detective details: Detective Actuators: When power is on and there is some below case. Indoor unit Controller PCB 1.
  • Page 49 Trouble shooting 9 Indicate or Display: Outdoor unit : Model 45.54 INDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR ERROR CODE : 35 Manual Auto Switch Error (L3) (L4) (L5) MODE Detective Actuators: Detective details: Indoor Unit Controller PCB When the Manual Auto Switch becomes ON for consecutive 30 or Indicator PCB more seconds.
  • Page 50 Trouble shooting 10 Indicate or Display: Outdoor unit : Model 45.54 INDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Indoor unit Communication circuit Error code : 3A (L3) (L4) (L5) MODE (wired remote controller) error Detective details: Detective Actuators: Detect the communication error of microcomputer and communication PCB.
  • Page 51 Indicate or Display: Trouble shooting 11 Outdoor unit : Model 45.54 INDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 41 MODE (L3) (L4) (L5) Indoor Room Thermistor Error Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit Indoor unit thermistor is open or short is detected always.
  • Page 52 Indicate or Display: Trouble shooting 12 rouble shooting Outdoor unit : Model 45.54 INDOOR UNIT Error Method: INDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 42 (L3) (L4) (L5) MODE Indoor Heat Ex. Thermistor Error Detective Actuators: Detective details: Indoor Unit Controller PCB...
  • Page 53 Trouble shooting 13 Indicate or Display: Outdoor unit : Model 45.54 INDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 44 MODE (L3) (L4) (L5) Human sensor error Detective Actuators: Detective details: Indoor unit Main PCB Detect the open condition of the sensor.
  • Page 54 Indicate or Display: Trouble shooting 14 Outdoor unit : Model 45.54 INDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 51 MODE (L3) (L4) (L5) Indoor Unit Fan Motor1 Error Detective Actuators: Detective details: Indoor unit Power Supply PCB When the fan motor speed is less than 1/3 of the target fan speed Indoor unit fan motor for 56 seconds.
  • Page 55 Indicate or Display: Outdoor unit : Model 45.54 Trouble shooting 15 PUMP PEAK POWER INDOOR UNIT Error Method: DOWN NOISE ERROR Error code : 53 (L3) (L4) (L5) MODE Drain pump Error Detective details: Detective Actuators: Indoor Unit Controller PCB Circuit When Float switch is ON for more than 3 minutes.
  • Page 56 Trouble shooting 16 Indicate or Display: Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE Outdoor unit main PCB model ERROR Error code : 62 (L3) (L4) (L5) MODE information error Detective Actuators: Detective details: Access to EEPROM failed due to some cause after outdoor unit started.
  • Page 57 Indicate or Display: Trouble shooting 17 Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 63 Inverter Error (L3) (L4) (L5) MODE Detective Actuators: Detective details: Transistor PCB Error information received from Transistor PCB Forecast of C ause : 1.
  • Page 58 Trouble shooting 18 Indicate or Display: OUTDOOR UNIT Error Method: Outdoor unit : No indication Active filter voltage error Error code : 64 Detective Actuators: Detective details: Outdoor unit Main PCB When inverter input DC voltage is higher than 430V or Active filter module lower than 110V.
  • Page 59 Indicate or Display: Trouble shooting 19 Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 65 MODE (L3) (L4) (L5) IPM Error Detective Actuators: Detective details: When more than normal operating current to IPM in Main PCB flows, Outdoor unit Main PCB the compressor stops.
  • Page 60 Indicate or Display: Trouble shooting 20 Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 71 MODE (L3) (L4) (L5) Discharge Thermistor Error Detective Actuators: Detective details: Discharge temperature thermistor short detected Discharge temperature thermistor Discharge thermistor open detected Forecast of C ause :...
  • Page 61 Indicate or Display: Trouble shooting 21 Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 72 (L3) (L4) (L5) MODE Compressor Thermistor Error Detective Actuators: Detective details: Compressor temperature thermistor short detected Compressor temperature thermistor Compressor thermistor open detected Forecast of C ause :...
  • Page 62 Indicate or Display: Outdoor unit : Model 45.54 Trouble shooting 22 PUMP PEAK OUTDOOR UNIT Error Method: POWER DOWN NOISE ERROR (L3) (L4) (L5) MODE Heat Ex. Outlet Temp. Error code : 73 Thermistor Error Detective Actuators: Detective details: Heat exchanger liquid temperature Heat exchanger outlet temperature thermistor short or open detected thermistor Forecast of C ause :...
  • Page 63 Indicate or Display: Trouble shooting 23 Outdoor unit : Model 45.54 OUTDOOR UNIT E rror Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 74 MODE (L3) (L4) (L5) Outdoor Thermistor Error Detective Actuators: Detective details: Outdoor temperature thermistor short or open detected Outdoor temperature thermistor Forecast of C ause : 1.
  • Page 64 Indicate or Display: Trouble shooting 24 Outdoor unit : Model 45.54 OUTDOOR UNIT E rror Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 77 MODE (L3) (L4) (L5) Heat Sink Thermistor Error Detective Actuators: Detective details: Heat sink temperature thermistor (Built-in IPM) open/short detected Outdoor unit Main PCB Forecast of C ause : 1.
  • Page 65 Indicate or Display: Trouble shooting 25 Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 84 (L3) (L4) (L5) MODE Current Sensor Error Detective Actuators: Detective details: When Input Current Sensor has detected 0A, while Inverter Compressor is Outdoor unit Main PCB operating at higher than 56rps, after 1minute upon starting the Compressor.
  • Page 66 Indicate or Display: Trouble shooting 26 Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 86 MODE (L3) (L4) (L5) Pressure Sencer Error Detective Actuators: Detective details: High pressure switch When the power was turned on, "high pressure switch : open" was detected. Forecast of Cause : 1.
  • Page 67 Indicate or Display: Trouble shooting 27 Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 94 (L3) (L4) (L5) MODE Over C urrent E rror Detective details: Detective Actuators: "Protection stop by overcurrent generation after inverter compressor start Outdoor unit Main PCB processing completed'' generated consecutively 10 times.
  • Page 68 Indicate or Display: Outdoor unit : Model 45.54 Trouble shooting 28 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR (L3) (L4) (L5) MODE Error code : 95 Compressor Control 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...
  • Page 69 Indicate or Display: Trouble shooting 29 Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : 97 MODE (L3) (L4) (L5) Outdoor Unit Fan Motor 1 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.
  • Page 70 Trouble shooting 30 Outdoor unit : Model 45.54 Indicate or Display: OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Outdoor Unit Fan M otor 2 Error MODE (L3) (L4) (L5) Error code : 98 For Model 45/ 54 Detective details: Detective Actuators: When outdoor fan rotation speed is less than 100rpm in 20 seconds...
  • Page 71 Indicate or Display: Trouble shooting 31 Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR 4-Way Valve Error Error code : 99 (L3) (L4) (L5) MODE Detective Actuators: Detective details: When the indoor heat exchanger temperature is compared with Indoor Unit Controller PCB Circuit the room temperature, and either following condition is detected Heat Exchanger Temperature Thermistor...
  • Page 72 Trouble shooting 32 Indicate or Display: Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Discharge Temp. Error Error code : A1 (L3) (L4) (L5) MODE Detective details: Detective Actuators: °C "Protection stop by "discharge temperature during compressor Discharge temperature thermistor ' ' '...
  • Page 73 Trouble shooting 33 Indicate or Display: Outdoor unit : Model 45.54 OUTDOOR UNIT E rror Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : A3 (L3) (L4) (L5) Compressor Temp. Error MODE Detective details: Detective Actuators: °C "Protection stop by "compressor temperature" during compressor Compressor temperature thermistor operation""generated 2 times within 24 hours...
  • Page 74 Indicate or Display: Trouble shooting 34 Outdoor unit : Model 45.54 OUTDOOR UNIT Error Method: PUMP PEAK POWER DOWN NOISE ERROR Error code : A5 (L3) (L4) (L5) MODE Low Pressure Error Detective details: Detective Actuators: Pressure sensor "Protection stop by suction pressure 0.02MPaG continued for 5 minutes"...

  • Page 75: Trouble Shooting With No Error Code

    2-3 TROUBLE SHOOTING WITH NO ERROR CODE Forecast of Cause: Trouble shooting 35 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 76 Forecast of Cause: Trouble shooting 36 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 77 Forecast of Cause: Trouble shooting 37 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 78 Forecast of Cause: Trouble shooting 38 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 79 Forecast of Cause : Trouble shooting 39 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 80: 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 loose bolt or contact noise...
  • Page 81 SERVICE PARTS INFORMATION 2 Inverter Compressor Check Point 1 : Check Connection Check terminal connection of Compressor (loose or incorrect wiring) (WHITE) (BLACK) Transistor PCB TM305 TM304 TM303 Inverter PCB BLACK WHITE Compressor (RED) Check Point 2 : Check Winding Resistance Check winding resistance of each terminal If the resistance value is 0 or infinite, replace Compressor.
  • Page 82 SERVICE PARTS INFORMATION 3 Outdoor unit Electronic Expansion Valve ( EEV ) Check Point 1 : Check Connections heck connection of connector ( Loose connector or open cable ) EXPANSI ON EXPANSION VALVE COIL VALVE COIL BLUE ORANGE BLUE CN700 CN111 YELLOW ORANGE...
  • Page 83 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 Check resistance when the main power supply is OFF.
  • Page 84 SERVICE PARTS INFORMATION 6 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 Table.1 Each type standard value LOT No.
  • Page 85 SERVICE PARTS INFORMATION 7 Mounted on Transistor PCB) Check Point 1 Disconnect the connection wires between the Transistor PCB - Capacitor PCB and Transistor PCB - Inverter Compressor. Set the tester to the "Resistance" mode, and measure the resistance between the following terminals. YELLOW TM301 (P) - TM305(U) / TM304(V) / TM303(W) TM301...
  • Page 86 SERVICE PARTS INFORMATION 8 Thermistor Check Point : Check Thermistor resistance value Remove connector and check Thermistor resistance value. Temperature Resistance Value [ k ] [°C] Thermistor A Thermistor B Thermistor C Thermistor D - 20 105.4 27.4 - 10 27.8 58.2 20.7...
  • Page 87 3-3-17,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan Aug. 2015 Printed in Japan...

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