Compressor Rotor Position Detection Error - Fujitsu ASU09RL2 Service Instructions Manual

Trouble shooting 15
OUTDOOR UNIT Error Method:
Compressor rotor position
detection error
Detective Actuators:
Outdoor unit Main PCB
Compressor
Forecast of Cause :
1. Defective connection of electric components
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 2 : Check connection of around the Compressor components
For Compressor Terminal, Main PCB
Check if connector is removed.
Check erroneous connection.
Check if cable is open.
(Refer to PARTS INFORMATION 2)
>>Upon correcting the removed connector or mis-wiring, reset the power.
OK OK
Check Point 3: Replace Main PCB
If Check Point 1,2 do not improve the symptom, change Main PCB.
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.
Detective details:
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.
2. Main PCB failure
02-17
3. Compressor failure