Fujitsu AS G18KMTA Series Service Instruction
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Fujitsu AS G18KMTA Series Service Instruction

Fujitsu AS G18KMTA Series Service Instruction

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SERVICE
INSTRUCTION
SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTED
INVERTER
Models
Indoor unit
AS*G18KMTA
AS*G24KMTA
RSG18KMTA
RSG24KMTA
type
Outdoor unit
AO*G18KMTA
AO*G24KMTA
ROG18KMTA
ROG24KMTA

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  • Page 1 SPLIT TYPE ROOM AIR CONDITIONER WALL MOUNTED type INVERTER SERVICE INSTRUCTION Models Indoor unit Outdoor unit AO*G18KMTA AS*G18KMTA AO*G24KMTA AS*G24KMTA RSG18KMTA ROG18KMTA ROG24KMTA RSG24KMTA...
  • Page 2 WALL MOUNTED type INVERTER 2 . TROUBLE SHOOTING...
  • Page 3 2.TROUBLESHOOTING 2-1 ERROR DISPLAY 2-1-1 INDOOR UNIT AND WIRED REMOTE CONTROLLER DISPLAY Please refer the flashing pattern as follows. The OPERATION, TIMER and ECONOMY lamps operate as follows according to the error contents. Indoor Unit Display Wired Remote Trouble Error Contents Controller ECONOMY OPERATION...
  • Page 4 2-1-2 WIRELESS LAN INDICATOR DISPLAY 1.WIRELESS LAN CONTROL system layout Indoor unit Internet Controller PCB Outdoor unit CLOUD Mobile App Wireless Parts : (Mobile device) LAN router Wireless LAN adapter 2.NAME OF PARTS Wireless LAN adapter Wireless LAN label MAC: SSID :AP-WF PIN: Connection port...

  • Page 5: Table Of Contents

    2-1-3 MOBILE APP DISPLAY ( For AIR CONDITIONER ) 1.ERROR DISPLAY If there is an abnormality on the air conditioning, you will see is as follows. When you tap the "Error button” on the home screen, Error Code and Error Name is displayed. For Android Error button Error code...
  • Page 6 2-1-4 MOBILE APP DISPLAY ( In Wireless LAN Control system ) 1.ERROR DISPLAY If there is an abnormality on the Wireless LAN control system, you will see is as follows. Error messages will disappear at 5 seconds. Then return to normal display. For Android For iOS Error messages...
  • Page 7 Error messages Causes Solutions Could not register the The air conditioner is Enter the Wi-Fi setting on the device. Make sure the not connected to the mobile device, then check if the device is ready for router. SSID of the air conditioner registration.
  • Page 8 Registration Errors (For iOS) Causes Solutions Error messages You need an internet The user has disabled Enable Wi-Fi from the iOS connection to add new Wi-Fi on their mobile setting. devices. device. Could not register The mobile device Connect the mobile device same LAN device.
  • Page 9 Error messages Causes Solutions Could not register the The router the Check if the router connected to device. Make sure the air conditioner is the air conditioner has internet device is ready for connected to, has no access. (You can check by registration.
  • Page 10 General Errors (For Android) Error messages Causes Solutions No connectivity to Wi- The mobile device has Connect the mobile device to the Fi or the cloud. Please no internet access. internet. check your network connection. An error occurred while trying to update your profile.
  • Page 11 General Errors (For iOS) Error messages Causes Solutions Failed to change The mobile device has Connect the mobile device to the password. no internet access. internet. Cloud not determine service reachability. Failed to update property. Could not retrieve schedules. The operation couldn’t be completed.

  • Page 12: Serial Communication Error

    2-2 TROUBLESHOOTING WITH ERROR CODE Indicate or Display: Trouble shooting 1 Outdoor Unit : No indication OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 1 time Flash, Timer lamp: 1 time Flash Serial communication error Economy lamp: Continuous flash. (Serial Reverse Transfer Error) ERROR CODE : [E : 11] Detective details:...

  • Page 13: Serial Communication Error

    Indicate or Display: Trouble shooting 2 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 1 time Flash, Timer lamp: 1 time Flash Serial communication error Economy lamp: Continuous flash. (Serial Forward Transfer Error) ERROR CODE : [E : 11] Detective details: Detective Actuators: When the outdoor unit cannot receive the serial signal from Indoor unit...

  • Page 14: Wired Remote Controller Communication Error

    Trouble shooting 3 Indicate or Display: INDOOR UNIT Error Method: Outdoor Unit : No indication Indoor Unit : Operation lamp: 1 time Flash, Timer lamp: 2 times Flash Wired remote controller Economy lamp: Continuous flash. communication error ERROR CODE : [E : 12] Detective details: Detective Actuators: Upon receiving the signal more than 1 time from Wired Remote,...

  • Page 15: Combination Error

    Indicate or Display: Trouble shooting 4 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 2 time Flash, Timer lamp: 3 time Flash Combination error Economy lamp: Continuous flash. ERROR CODE : [E : 23] Detective details: Detective Actuators: 1.
  • Page 16 Indicate or Display: Trouble shooting 5 INDOOR UNIT Error Method: Outdoor Unit : No indication Indoor Unit : Operation lamp: 3 times Flash, Timer lamp: 2 times Flash Indoor unit PCB model Economy lamp: Continuous flash. information error ERROR CODE : [E : 32] Detective details: Detective Actuators: When power is on and there is some below case.

  • Page 17: Manual Auto Switch Error

    Indicate or Display: Trouble shooting 6 INDOOR UNIT Error Method: Outdoor Unit : No indication Indoor Unit : Operation lamp: 3 times Flash, Timer lamp: 5 times Flash Manual auto switch error Economy lamp: Continuous flash. ERROR CODE : [E : 35] Detective Actuators: Detective details: Indoor unit Controller PCB...

  • Page 18: Room Temp. Sensor Error

    Indicate or Display: Trouble shooting 7 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 4 times Flash, Timer lamp: 1 time Flash Room temp. sensor error Economy lamp: Continuous flash. ERROR CODE : [E : 41] Detective Actuators: Detective details: Indoor unit Controller PCB...

  • Page 19: Indoor Unit Heat Ex. Middle Temp. Sensor Error

    Indicate or Display: Trouble shooting 8 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 4 times Flash, Timer lamp: 2 times Flash Indoor unit Heat Ex. Middle temp. Economy lamp: Continuous flash. sensor error ERROR CODE : [E : 42] Detective Actuators: Detective details:...

  • Page 20: Indoor Unit Fan Motor Error

    Indicate or Display: Trouble shooting 9 Outdoor Unit : No indication INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 5 times Flash, Timer lamp: 1 time Flash Indoor unit fan motor error Economy lamp: Continuous flash. ERROR CODE : [E : 51] Detective Actuators: Detective details: Indoor unit Controller PCB...

  • Page 21: Outdoor Unit Main Pcb Model Information Error

    Indicate or Display: Trouble shooting 10 OUTDOOR UNIT Error Method: Outdoor Unit : No indication Indoor Unit : Operation lamp: 6 times Flash, Timer lamp: 2 times Flash Outdoor unit main PCB model Economy lamp: Continuous flash. information error ERROR CODE : [E : 62] Detective details: Detective Actuators: Access to EEPROM failed due to some cause after outdoor unit started.

  • Page 22: Inverter Error

    Indicate or Display: Trouble shooting 11 Outdoor Unit : No indication OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 6 times Flash, Timer lamp: 3 times Flash Inverter error Economy lamp: Continuous flash. ERROR CODE : [E : 63] Detective Actuators: Detective details: Outdoor unit Main PCB...

  • Page 23: Pfc Circuit Error

    Indicate or Display: Trouble shooting 12 Outdoor Unit : No indication OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 6 times Flash, Timer lamp: 4 times Flash PFC circuit error Economy lamp: Continuous flash. ERROR CODE : [E : 64] Detective Actuators: Detective details: When inverter output DC voltage is higher than 420V for over 3 seconds,...

  • Page 24: Trip Terminal L Error

    Indicate or Display: Trouble shooting 13 Outdoor Unit : No indication OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 6 times Flash, Timer lamp: 5 times Flash Trip terminal L error Economy lamp: Continuous flash. ERROR CODE : [E : 65] Detective Actuators: Detective details: Outdoor unit Main PCB...

  • Page 25: Discharge Temp. Sensor Error

    Indicate or Display: Trouble shooting 14 OUTDOOR UNIT Error Method: Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF Indoor Unit : Operation lamp: 7 times Flash, Timer lamp: 1 time Flash Discharge temp. sensor error Economy lamp: Continuous flash. ERROR CODE : [E : 71] Detective details: Detective Actuators: Outdoor unit Main PCB...
  • Page 26 For 24 type Indicate or Display: Trouble shooting 15 OUTDOOR UNIT Error Method: Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF Indoor Unit : Operation lamp: 7 times Flash, Timer lamp: 2 times Flash Compressor temp. sensor error Economy lamp: Continuous flash. ERROR CODE : [E : 72] Detective details: Detective Actuators:...

  • Page 27: Outdoor Unit Heat Ex. Liquid Temp.sensor Error

    Indicate or Display: Trouble shooting 16 Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 7 times Flash, Timer lamp: 3 times Flash Outdoor unit Heat Ex. liquid temp. Economy lamp: Continuous flash. sensor error ERROR CODE : [E : 73] Detective details:...

  • Page 28: Outdoor Temp. Sensor Error

    Indicate or Display: Trouble shooting 17 Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 7 times Flash, Timer lamp: 4 times Flash Outdoor temp. sensor error Economy lamp: Continuous flash. ERROR CODE : [E : 74] Detective details: Detective Actuators: Outdoor unit Main PCB...

  • Page 29: Current Sensor Error

    Indicate or Display: Trouble shooting 18 Outdoor Unit : LED 2sec ON/ 2sec OFF OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 8 times Flash, Timer lamp: 4 times Flash Current sensor error Economy lamp: Continuous flash. ERROR CODE : [E : 84] Detective Actuators: Detective details: When Input Current Sensor has detected 0A, while Inverter Compressor is...

  • Page 30: High Pressure Switch Error

    For 24 type Indicate or Display: Trouble shooting 19 Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 8 times Flash, Timer lamp: 6 times Flash High Pressure Switch Error Economy lamp : Continuous flash. ERROR CODE : [E : 86] Detective Actuators: Detective details:...

  • Page 31: Trip Detection

    Trouble shooting 20 Indicate or Display: OUTDOOR UNIT Error Method: Outdoor Unit : LED 0.5sec ON/ 0.5sec OFF Indoor Unit : Operation lamp: 9 times Flash, Timer lamp: 4 times Flash Trip detection Economy lamp: Continuous flash. ERROR CODE : [E : 94] Detective details: Detective Actuators: "Protection stop by overcurrent generation after inverter compressor start...

  • Page 32: Compressor Rotor Position Detection Error

    Trouble shooting 21 Indicate or Display: OUTDOOR UNIT Error Method: Outdoor Unit : LED 0.1sec ON/ 2sec OFF Indoor Unit : Operation lamp: 9 times Flash, Timer lamp: 5 times Flash Compressor rotor position Economy lamp: Continuous flash. detection error ERROR CODE : [E : 95] Detective details: Detective Actuators:...

  • Page 33: Outdoor Unit Fan Motor Error

    Indicate or Display: Trouble shooting 22 OUTDOOR UNIT Error Method: Outdoor Unit : LED 5sec ON/ 5sec OFF Indoor Unit : Operation lamp: 9 times Flash, Timer lamp: 7 times Flash Outdoor unit fan motor error Economy lamp: Continuous flash. ERROR CODE : [E : 97] Detective details: Detective Actuators:...

  • Page 34: 4-Way Valve Error

    Indicate or Display: Trouble shooting 23 Outdoor Unit : No indication OUTDOOR UNIT Error Method: Indoor Unit : Operation lamp: 9 times Flash, Timer lamp: 9 times Flash 4-way valve error Economy lamp: Continuous flash. ERROR CODE : [E : 99] Detective Actuators: Detective details: When the indoor heat exchanger temperature is compared with...

  • Page 35: Discharge Temp. Error

    Indicate or Display: Trouble shooting 24 OUTDOOR UNIT Error Method: Outdoor Unit : Continuously lighting Indoor Unit : Operation lamp: 10 times Flash, Timer lamp: 1 time Flash Discharge temp. error Economy lamp: Continuous flash. ERROR CODE : [E : A1] Detective details: Detective Actuators: Outdoor unit Main PCB...
  • Page 36 Indicate or Display: Trouble shooting 25 OUTDOOR UNIT Error Method: Outdoor Unit : Continuously lighting Indoor Unit : Operation lamp: 10 times Flash, Timer lamp: 3 times Flash Compressor temp. error Economy lamp: Continuous flash. ERROR CODE : [E : A3] Detective details: Detective Actuators: Compressor temperature thermistor...
  • Page 37 2-3 TROUBLESHOOTING WITH NO ERROR CODE Forecast of Cause: Trouble shooting 26 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. >>If abnormal condition is found, correct it by referring to Installation Manual or Data &...
  • Page 38 Forecast of Cause: Trouble shooting 27 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 39 Forecast of Cause: Trouble shooting 28 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 40: Check Point 4

    Forecast of Cause: Trouble shooting 29 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? Check if Energy save function is operated.
  • Page 41 Forecast of Cause : Trouble shooting 30 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 42 2-4 TROUBLESHOOTING WITH ERROR CODE (For WIRELESS LAN ADAPTER) Trouble shooting 32 Indicate of Display: INDOOR UNIT Error Method: Indoor Unit : External Communication Error Operation lamp: 1 times Flash Timer lamp : 8 times Flash (Communication Error of between W-LAN lamp : On or Off IndoorUnit to WirelessLANadapter)
  • Page 43 Trouble shooting 33 Indicate of Display: INDOOR UNIT Error Method: Indoor Unit : Network Communication Error Operation lamp: – Any state Timer lamp : – Any state (Communication Error of between W-LAN lamp : Flashing slowly (On/Off=7sec/2sec) Wireless LAN Router to Wireless LAN adapter) ERROR CODE : [ No indication ] Detective Actuators: Detective details:...
  • Page 44 Trouble shooting 34 Indicate of Display: INDOOR UNIT Error Method: Indoor Unit : Network Communication Error Operation lamp: – Any state Timer lamp : – Any state (Communication Error of between W-LAN lamp : ON Wireless LAN Router to Wireless CLOUD) ERROR CODE : [ No indication ] Detective Actuators: Detective details:...
  • Page 45 Trouble shooting 35 Indicate of Display: INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 1 time Flash Communication Error Timer lamp : 8 time Flash (”Trou. 32, 33” and “Trou. 34” are W-LAN lamp : On or Flashing slowly (On/Off=7sec/2sec) simultaneous Error) ERROR CODE : [ 18 ] Detective Actuators:...
  • Page 46 CONTINUATION Check Point 3-2 : Turn on power again of Air conditioner If Check Point 1,2 do not improve the symptom, of the Air conditioner,please wait 60 seconds. turn on power again >When the flashing pattern of the LED 2(Orange) is “Flashing Fast” >> Refer to “Check Point 4”. Check Point 4 : Replace Wireless LAN adapter If Check Point 2,3 do not improve the symptom, replace Wireless LAN adapter and Please cancel the air conditioner of the registration on the Mobile App.
  • Page 47 Trouble shooting 36 Indicate of Display: INDOOR UNIT Error Method: Indoor Unit : Operation lamp: 1 time Flash Wireless LAN adapter Non-Energized Timer lamp : 8 time Flash W-LAN lamp : On or Off ERROR CODE : [ 18 ] Detective Actuators: Detective details: Indoor unit Controller PCB...
  • Page 48 Air Conditioning De-registration Method If you replace the Wireless LAN adapter, you will need to conditioner information on the App. de-register all of the Unregister method is as follows. Launch the mobile app(FGL air). FGL air Please long-push the registered “Device name”...
  • Page 49 Air conditioner registration Paring Method Choose from the following modes to connect your Air conditioner to your Wireless LAN router. Note: Before starting this setting, wait for 60 seconds or more after the power supply is connected to the air conditioner (via breaker or plug). Confirm that the LED 1 is not flashing.
  • Page 50 Select [Manual mode] on the screen on the mobile app. Button Mode Manual Mode Select the SSID of the W-LAN adapter you are connecting to. AP-XXXX-xxxxxxxxxxxx Input the PIN code written on the W-LAN adapter. AP-XXXX-xxxxxxxxxxxx Password Connect device Select the WLAN Access Point you are connecting to. Input the WLAN Access Point password then press WLAN Access Points [Connect device].
  • Page 51 ■ Manual mode (For iOS 11 or later) *Lighting pattern: Blinking Any state NOTES: If you do not press any buttons of the remote controller for 60 seconds, the remote controller display willreturn to the original display. Press on the remote controller until only the clock is displayed on the remote controller display.
  • Page 52 Select [Manual mode] on the screen on the mobile app. Button Mode Manual Mode Select [Continue]. AP-XXXX-xxxxxxxxxxxx Continue Connect Input the SSID and PIN code of the air conditioner written on the WLAN label. AP-XXXX-xxxxxxxxxxxx • SSID Input “AP-XXXX-” in upper-case. Connect Lower-case the following 12 characters.
  • Page 53 ■ Manual mode (For iOS 10 or earlier) *Lighting pattern: Blinking Any state NOTES: If you do not press any buttons of the remote controller for 60 seconds, the remote controller display willreturn to the original display. Press on the remote controller until only the clockis displayed on the remote controller display.
  • Page 54 Select [Manual mode] on the screen on the mobile app. Button Mode Manual Mode Open [Setting] -> [Wi-fi] by following the instruc- tions on the mobile app. Select the SSID of the air conditioner you are AP-XXXX-xxxxxxxxxxxx connecting to. Input the PIN code written on the W-LAN adapter. AP-XXXX-xxxxxxxxxxxx Password Connect device...
  • Page 55 ■ Button mode (For Android OS, iOS) *Lighting pattern: Blinking Any state NOTES: If you do not press any buttons of the remote controller for 60 seconds, the remote controller display willreturn to the original display. Press on the remote controller until only the clock is displayed on the remote controller display.
  • Page 56 Select using (Remote controller display) Press on the indoor unit will blink. When the W-LAN adapter find a connectable W-LAN (on/off = 1sec/1sec) access point, the blinking will become slowly. NOTES: Before proceeding to the next step, be sure to check that the blinking pattern has changed.
  • Page 57 2-5 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 58 SERVICE PARTS INFORMATION 2 Inverter Compressor Check Point 1 : Check Connection Check terminal connection of Compressor (loose or incorrect wiring) Terminal cover opened W(C) U(R) (BLACK) (RED) V(S) (WHITE) Check Point 2 : Check Winding Resistance Check winding resistance of each terminal If the resistance value is 0 or infinite, replace Compressor.
  • Page 59 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 ORANGE YELLOW WHITE Check Point 2 : Check Coil of EEV Check Point 3 : Check Noise at start up Remove connector, check each winding Turn on Power and check operation noise.
  • Page 60 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 unit Fan Motor Refer to below.
  • Page 61 3-3-17,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan Oct. 2019 Printed in Japan...

This manual is also suitable for:

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