Fujitsu ARC90LHTA Service Instruction page 46

Trouble shooting 13
OUTDOOR UNIT Error Method:
Compressor location error
Detective Actuators:
Outdoor unit Inverter PCB
Forecast of Cause :
1. Connector connection failure
Check Point 1 : Check connections condition in control unit
Check if the terminal connection is loose.
Check if connector is removed.
Check if connector is erroneous connection.
Check if cable is open.
>> Upon correcting the removed connector or mis-wiring, reset the power.
Check Point 2 : Check Inverter PCB
Inverter PCB check is refer to SERVICE PARTS INFORMATION 4.
>> If it is abnormal, replace Inverter PCB.
Check Point 3 : Check connection of around the Compressor components
For Compressor Terminal, Main PCB
Check if connector is removed.
Check erroneous connection.
Check if cable is open.
(Refer to PARTS INFORMATION 2)
>>Upon correcting the removed connector or mis-wiring, reset the power.
Check Point 3-1: Replace Compressor
If Check Point 3 do not improve the symptom, change Compressor.
AMP Air Conditioning
2. Inverter PCB failure
OK
OK OK
OK OK
Indicate or Display:
Refer to error code table.
Detective details:
When "compressor location detection error" is detected consecutively
5 times, within 40 seconds after start-up.
3. Compressor
02-15
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