Fujitsu ARTG30LHTA Service Instruction page 43

Trouble shooting 10
OUTDOOR UNIT Error Method:
Inverter Error
Detective Actuators:
Inverter PCB
Forecast of Cause : 1. External cause. 2. Power supply to Filter PCB to Inverter PCB
wiring disconnection, open 3. Filter PCB failure 4. Inverter PCB failure
Check Point 1-1 : Turn the power
on again.
Error displayed again?
YES
Check Point 2 : Check the wiring (Power supply to Filter PCB to Inverter PCB)
Connector and wiring connection state check
Cable open check
OK
Check Point 3 : Replace Filter PCB (INV) and Inverter PCB
Replace Filter PCB and Inverter PCB.
Indicate or Display:
Refer to error code table.
Detective details:
Error information received from Inverter PCB
Check Point 1-2 : External cause
NO
Check if temporary voltage drop was not generated.
Check if temporary open was not generated.
Check if ground is connected correctly or there are no related cables near the
power line.
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