Mitsubishi Heavy Industries FDT Series Technical Manual page 441

Error code
WAIT
Remote controller:
3.
• Faulty reactor
Note:
RUN light TIMER light
Indoor
display – –
Green LED Red LED
Outdoor
control PCB
Method to check for inverter PCB before
replacement of blown power supply fuse.
From previous page
Isn't there a
short-circuit between phases of the
noise filter?
NO
Isn't there a
short-circuit between phases of inverter PCB
input terminals?
NO
Isn't there
any crack, burning on the power
transistor module?
NO
Is the reactor OK?
YES
Is the
electrolytic capacitor
OK?
YES
Replace the power
supply fuse.
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Content
YES
Replace the
noise filter.
YES
YES
Replace the
inverter PCB.
NO
Replace the reactor.
NO
Replace the electrolytic
capacitor.
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