Fujitsu AS*G09LTCB Service Instructions Manual page 42

Trouble shooting 11
OUTDOOR UNIT Error Method:
IPM error
Detective Actuators:
Outdoor unit Main PCB
Outdoor unit Transistor PCB (14L)
Compressor
Forecast of Cause :
1. Defective connection of electric components
3. Outdoor Heat Exchanger clogged
5. Main PCB failure
Check Point 1 : Check connections of Outdoor Unit Electrical Components
Check if the terminal connection
Check if connector is removed.
Check erroneous connection.
Check if cable is open.
>>Upon correcting the removed connector or mis-wiring, reset the power.
OK
Check Point 2 : Check Outdoor Fan, Heat Exchanger
Is there anything obstructing the air distribution circuit?
Is there any clogging of Outdoor Heat Exchanger?
Is the Fan rotating by hand when operation is off ?
>> If the Fan Motor is locked, replace it.
OK
Check Point 3 : Check Outdoor Fan
Check Outdoor Fan Motor. (Refer to Trouble shooting 17)
>> If the Fan Motor is failure, replace it.
OK OK
Check Point 4 : Check Compressor
Check Compressor. (PARTS INFORMATION 2)
OK OK
Check Point 5 : Check Transistor PCB (For 14L)
Check Transistor PCB. (PARTS INFORMATION 7)
OK OK
Check Point 6 : Replace Main PCB
If Check Point 1 5 do not improve the symptom, change Main PCB.
Indicate or Display:
Refer to error code table.
Detective details:
When more than normal operating current to IPM in Main PCB flows,
the compressor stops.
After the compressor restarts, if the same operation is repeated within 40sec,
the compressor stops again.
If and
is loose.
repeats 5 times, the compressor stops permanently.
2. Outdoor Fan Operation failure
4. Compressor failure
6. Transistor PCB failure (For 14L)
02-15