Fujitsu AO*G09LTCN, Service Instructions Manual

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Trouble shooting 17
OUTDOOR UNIT Error Method:
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 : Check connection of around the Compressor components
OK OK
OK OK
Check Point 3: Replace Main PCB
Outdoor unit Main PCB
Compressor
Compressor motor control error
1. Defective connection of electric components 2. Main PCB failure 3. Compressor failure
If Check Point 1,2 do not improve the symptom, change Main PCB.
Check if connector is removed.
Check erroneous connection.
Check if cable is open.
>>Upon correcting the removed connector or mis-wiring, reset the power.
(Refer to PARTS INFORMATION 2)
For Compressor Terminal, Main PCB
If the detected rotor location is out of phase with actual rotor location
more than 90°, the compressor stops.
After the compressor restarts, if the same operation is repeated
within 40sec, the compressor stops again.
If and repeats 5 times, the compressor stops permanently.
02-21
Check Point 1 : Check Noise from Compressor
Turn on Power and check operation noise.
If an abnormal noise show, replace Compressor.
OK OK
Check Point 4: Replace Compressor
If Check Point 3 do not improve the symptom, change Compressor.
Indicate or Display:
Refer to error code table.