Fujitsu AS*A09LKC Service Instructions Manual page 35

Trouble shooting 11
OUTDOOR UNIT Error Method:
Over Current Protection
Detective Actuators:
Outdoor Unit Inverter PCB
Compressor
Forecast of Cause :
1. Connection failure
4. Compressor failure
Check Point 1 : Check connections condition in control unit
Check if the terminal connection is loose.
Check if connector is removed.
Check if connector is erroneous connection.
Check if cable is open.
>> Upon correcting the removed connector or mis-wiring, reset the power.
OK
Check Point 2 : Check Outdoor Heat Exchanger
Is there any obstructing the air flow route?
Is there any clogging of outdoor unit Heat Exchanger?
>> If clogged, clear the clog.
OK
Check Point 3 : Check Outdoor Fan
Check Outdoor Fan Motor. (Refer to Trouble shooting 15)
>> If the Fan Motor is failure, replace it.
OK
Check Point 4 : Check Compressor
Compressor check is refer to SERVICE PARTS INFORMATION 2.
>> If it is abnormal, replace Compressor.
OK OK
Check Point 5 : Replace Inverter PCB
If Check Point 1 ~ 4 do not improve the symptom, replace
Indicate or Display:
Refer to error code table.
Detective details:
When over current flows in
After the compressor restarts, if the same error is repeated within
40sec, the compressor stops reappear.
If and
2. Outdoor Fan operation failure
5. Inverter PCB failure
02-13
Inverter PCB
repeats 5 times, the compressor stops permanently.
3.Outdoor Heat Exchanger clogged
Inverter PCB
.
, the compressor stops.