Ipm Error (Trip Terminal L Error) - Fujitsu ASU18RLF Service Instructions Manual

Trouble shooting 19
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
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 30)
>> If the Fan Motor is failure, replace it.
OK
Test 4 : Check Compressor
Check Compressor.(SERVICE PARTS INFORMATION 9)
OK
Test 5 : Replace Main PCB
If Test 1 - 4 do not improve the symptom, replace Main PCB.
(SERVICE PARTS INFORMATION 10)
Indicate of Display:
Indoor Unit
Operation lamp : 6 time Flash
Timer lamp
ERROR CODE : [E : 65]
Detective details:
When more than normal operating current to IPM in Main PCB flows,
the compresor stops.
After the compressor restarts, if the same operation is repeated
within 40 sec, the compressor stops again.
If and
2. Outdoor Fan Operation failure
4. Compressor failure
is loose.
02-24
Outdoor Unit
A
: 5 time Flash
6
: Light ON
repeats 5 times, the compressor stops permanently.
Monitor
B C D E F
5
: Light OFF n : n time blinking
5. Main PCB failure