Mitsubishi Electric FDT125VNVF Technical Manual page 424

Error code
Remote controller:
WAIT
1. Applicable model
All models
2. Error detection method
3. Condition of Error displayed
4. Presumable cause
• Faulty indoor control PCB
• Defective remote controller
• Broken remote controller wire
• Faulty outdoor control PCB
• Broken connection wires
Note:
RUN light TIMER light
Indoor
– –
display
Green LED Red LED
Outdoor
Keeps flashing 2 times flash
control PCB
5. Troubleshooting
Diagnosis
" " is still displayed on the
WA IT
remote controller LED 2 minutes
after power ON.
YES
Is the outdoor
unit control green LED
flashing?
YES
Is the outdoor unit
control red LED flashing
twice?
YES
Are wires
connected properly between indoor/
outdoor units?
YES
Is approx.
DC20V detected between �-� on
the outdoor unit terminal
block?
YES
Is approx.
DC20V detected between �-� on
the indoor unit terminal
block?
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Content
Communication error at
initial operation (1/3)
To next page
NO
NO
NO
NO
NO
YES
- -
'12 • PAC-T-174
Countermeasure
Defective indoor control PCB ➞
Replace.
Defective remote controller ➞ Replace.
Broken remote controller wire Y ➞
Replace.
Correct connection wires
between indoor and
outdoor units.
Defective outdoor control
PCB ➞ Replace.
Defective connection wire
(Broken)
Noise
Defective indoor control
PCB ➞ Replace.