Fujitsu AO*G09KXCA Series, Service Instruction

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Forecast of Cause:
Test 1 : Check rotation of Fan
Test 2 : Check ambient temp. around motor
OK
OK
Indoor unit Controller PCB
Indoor Fan motor
1. Fan motor failure 2. Motor protection by surrounding temperature rise
3. Controller PCB failure
Check if the Fan Motor is lock.
(Can the Fan be rotated by hand when operation is off.)
Check the Fan loosening.
(Lock-nut loosening, defective propeller fan)
>> If Fan Motor or bearing is abnormal, replace it.
Check excessively high temperature around the motor.
Check Indoor unit Fan motor. ( SERVICE PARTS INFORMATION 4 )
(If there is any surrounding equipment that causes heat)
>> Upon the temperature coming down, restart operation.
Test 4 : Replace Controller PCB
If Test 1, 2 do not improve the symptom, replace Controller PCB.
Trouble shooting 9
INDOOR UNIT Error Method:
OK
Test 3 : Check Indoor unit Fan motor
Indicate or Display:
Detective Actuators:
Detective details:
Indoor Fan Motor Lock Error
Indoor Fan Motor Rev. Error
02-13
・
When the condition that actual rev. of Indoor Fan is 1/3 or less.
・
When it detected 10 seconds continuously at the target rotation
(200rpm) or more.
Or the condition of fan speed is 0rpm is continued more than 56 seconds.
Indoor Unit :
Operation indicator: 5 time Flash
Timer indicator : 1 time Flash
Error code : [ E : 51 ]
Economy indicator: Continuous Flash