Fujitsu AS*9LSACW Service Instructions Manual page 56

Wall mounted type inverter
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0.1
0.5 sec
PFC Circuit Error
sec.
4 times
blinki
ng
Excessive voltage of DC voltage on PFC circuit in Inverter PCB is detected, or the excessive current in the circuit
is detected.
> Permanent stop.
[Diagnosis Point]
- Controller PCB defective (Refer to after mentioned "PFC circuit diagnosis").

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