Mitsubishi Heavy Industries MHI FDU71VNXVF1 Technical Manual page 300

Error code
None
Remote control:
1. Applicable model
All models
2. Error detection method
3. Condition of Error displayed
4. Presumable cause
• Remote control wire
breakage/short-circuit
• Defective remote control
• Malfunction by noise
• Faulty indoor power PCB
• Broken harness
• Faulty indoor control PCB
Note:
LED Green Red
Keeps flashing 3 times flash
Indoor
Keeps flashing Stays OFF
Outdoor
5. Troubleshooting
Diagnosis
loose connection of remote
control wire broken or
Disconnect remote
higher detected between X-Y
of indoor unit terminal
between �-� of
299
-
Content
Power supply system error
(Power supply to remote control)
Isn't there any
YES
control wires?
NO
Isn't remote
YES
short-circuited?
NO
control wires.
Is DC15V or
YES
block?
NO
Is DC180V
NO
CNW2
YES
-
'12 • PAC-T-178
Countermeasure
Correct.
Replace wires.
Replace remote control.
Defective indoor power
PCB ➞ Replace.
Defective indoor control
PCB ➞ Replace.