Fujitsu AUXG30KRLB, Service Instruction

Page: 59 / 90

02-17
Trouble shooting 16
INDOOR UNIT Error Method:
Indoor Unit Fan Motor Error
Detective Actuators: Detective details:
Forecast of Cause:
Check Point 1 : Check rotation of Fan
Check Point 2 : Check ambient temp. around motor
OK
OK
OK
Indoor unit Power Supply PCB
Indoor unit fan motor
1. Fan rotation failure 2. Fan motor winding open 3. Motor protection by surrounding temperature rise
4. Power Supply PCB failure 5. Indoor unit fan motor failure
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 excessively high temperature around the motor.
(if there is any surrounding equipment that causes heat)
>>Upon the temperature coming down, restart operation.
When the fan motor speed is less than 1/3 of the target fan speed
for 56 seconds.
When detect the 0 rpm for 56 seconds after fan motor started.
Check Point 4 : Replace Power Supply PCB
If Check Point 1- 3 do not improve the symptom, replace Power Supply PCB.
Check Point 3 : Check Indoor unit fan motor
Check Indoor unit fan motor. (PARTS INFORMATION 4)
>>if Indoor unit fan motor is abnormal, replace Indoor unit fan motor.
Indicate or Display:
Error code : 51
Outdoor unit :
n: n times blinking : Light ON : Light OFF
Mode Error L1 L2 L6 L5 L4 L3
2 5 15