Fujitsu AS*A09LKC Service Instructions Manual page 43

Trouble shooting 19
OUTDOOR UNIT Error Method:
Active Filter 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.
OK
Check Point 2 : Check Inverter PCB
Check Varistor(VA1 - VA2).
If Varistor is defective, there is a possibility of an abnormal
power supply.
Check the correct power voltage and replace Inverter PCB.
Indicate or Display:
Refer to error code table.
Detective details:
Inverter low voltage protection
Inverter overvoltage protection
2. lnverter PCB failure
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