Fujitsu AUXG45LRLB Service Instruction page 59

Trouble shooting 19
OUTDOOR UNIT Error Method:
IPM Error
Detective Actuators:
Outdoor unit Main PCB
C ompressor
Transistor PCB
Forecast of Cause :
1. Defective connection of electric components
3 . Outdoor Heat Exchanger clogged
6. Transistor 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 29,30)
>> If the Fan Motor is failure, replace it.
OK OK
Check Point 4 : Check Compressor
(PARTS INFORMATION 2)
Check Compressor.
OK OK
Check Point 5 : Check Transistor PCB
Check Transistor PCB
>>If Transistor PCB is abnormal, replace it.
OK OK
Check Point 6 : Replace Main PCB
If Check Point 1 5 do not improve the symptom, change Main PCB.
Indicate or Display:
Error code : 65
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.
Outdoor unit : Model 45.54
POWER
ERROR
MODE
2
repeats 5 times, the compressor stops permanently.
2. Outdoor Fan Operation failure
4. Compressor failure
02-21
PUMP LOW PEAK
DOWN NOISE CUT
L ( ) 1 L ( ) 2 (L3) (L4) (L5) L ( ) 6
5
6
5. Main PCB failure