Fujitsu ASU30RLE Service Instruction page 56

Trouble shooting 17
OUTDOOR UNIT Error Method:
IPM Error
Detective Actuators:
Outdoor unit main PCB
Compressor
Transistor PCB
Forecast of Cause:
1. Defective connection of electric components
3. Outdoor Heat Exchanger clogged
Test 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 miss-wiring, reset the power.
OK
Test 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
Test 3 : Check Outdoor Fan
Check Outdoor Fan Motor. (Refer to Trouble shooting 28,29)
>> If the Fan Motor is failure, replace it.
OK
Test 4 : Check Compressor
Check Compressor. (SERVICE PARTS INFORMATION 2)
OK
Test 5 : Check Transistor PCB
Check Transistor PCB
>>If Transistor PCB is abnormal, replace it.
OK
Test 6 : Replace Main PCB
If Test 1 - 5 do not improve the symptom, change Main PCB.
Indicate of Display:
Indoor Unit :
Operation lamp: 6 times Flash,
Timer lamp
ERROR CODE : [E : 65]
Detective details:
When more than normal operating current to IPM in Main PCB flows,
①
the compressor stops.
After the compressor restarts. If the same operation is repeated within 40sec,
②
the compressor stops.
If and
③ ① ②
4. Compressor failure
is loose.
Outdoor unit :
: 5 times Flash
repeats 5 times, the compressor stops permanently.
2. Outdoor Fan Operation failure
5. Main PCB failure
02-20
PUMP LOW
POWER
DOWN NOISE
ERROR
MODE (L1) (L2) (L3) (L4)
6 5
2
: Light OFF : Light ON n : n times blinking
6. Transistor PCB failure
PEAK
CUT
(L5) (L6)