Fujitsu AB*30LBAG series, Service Instruction

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Trouble shooting 9
INDOOR UNIT Error Method:
Detective Actuators:
Detective details:
Forecast of Cause:
Check Point 2 : Check Motor winding
Check Point 1 : Check rotation of Fan
Check Point 3 : Check ambient temp. around motor
Check Point 4 : Check Motor Capacitor
OK
OK
OK
OK
Indicate or Display:
Outdoor Unit : No indication
Indoor Fan Motor abnormal
Indoor Unit Controller PCB Circuit
Indoor Fan Motor
1. Fan rotation failure 2. Fan motor winding open 3. Motor protection by surrounding temperature rise
4. Capacitor failure 5. Control PCB 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 Indoor Fan motor. (PARTS INFORMATION 5)
>>If Fan motor 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.
Check continuity of motor capacitor
>>If it is shorted, replace the capacitor.
When the condition that actual frequency of Indoor Fan is
below 1/3 of target frequency is continued more than 56 seconds.
07-10
Indoor Unit : Operation LED: 6 times blink, Timer LED: Blink,
Vertical swing LED: OFF
Check Point 5 : Replace Controller PCB
If Check Point 1- 4 do not improve the symptom, replace Controller PCB.