Mitsubishi Heavy Industries FDT100VNAWVH Service Manual page 146

Error code
Remote control: WAIT
1. Applicable model
All models
2. Error detection method
3. Condition of error displayed
4. Presumable cause
• Blown fuse
• Faulty noise filter
• Faulty outdoor unit main PCB
• Faulty reactor
Note:
RUN light TIMER light
Indoor
display
– –
Green LED Red LED
Outdoor unit
control PCB
Keeps flashing 2-time flash
5. Troubleshooting
Diagnosis
Method to check for outdoor unit main PCB
before replacement of blown power source 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 outdoor unit main
PCB input terminals?
NO
Isn't there
any crack, burning on the power
transistor module?
NO
Is the reactor OK?
YES
Replace the power
source fuse.
145
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Content
Communication error at
initial operation (3/3)
YES
Replace the
noise filter.
YES
YES
Replace the
main PCB.
NO
Replace the reactor.
-
'19 • PAC-SM-309
Countermeasure