Fujitsu AS*G24LFCA Service Instruction page 37

Trouble shooting 10
OUTDOOR UNIT Error Method:
IPM Error
Detective Actuators:
Outdoor unit Main PCB
Compressor
Forecast of Cause :
1. Defective connection of electric components
3. Outdoor Heat Exchanger clogged
6. 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 19)
>> If the Fan Motor is failure, replace it.
OK
Check Point 4 : Check Compressor
Check Compressor.
(PARTS INFORMATION 2)
OK
Check Point 5 : Check Transistor PCB
Transistor PCB.
Check
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
is loose.
(PARTS INFORMATION 7)
and repeats 5 times, the compressor stops permanently.
2. Outdoor Fan Operation failure
4. Compressor failure
02-12
5. Transistor PCB failure