Mitsubishi Heavy Industries FDT71VNXVD Service Manual page 51

Error code
Remote controller: None
1. Applicable model
FDT, FDTC and FDEN series
only
2. Error detection method
3. Condition of Error displayed
4. Presumable cause
• Defective LM
• LM wire breakage
• Faulty indoor control PCB
Note:
LED Green Red
Content
Keeps flashing Stays OFF
Indoor
Keeps flashing Stays OFF
Outdoor
5. Troubleshooting
Diagnosis
Check at the indoor unit side.
Operate after
waiting for more
than 1 minute.
Does the louver
operate at the power
on?
YES
Is LM locked?
Is the louver
operable with the remote
controller?
LM: louver motor
1
- -
Louver motor failure
(FDT and FDEN series)
NO
Is LM wiring
broken?
NO
YES
NO
YES
YES
NO
-
'10 • PAC-SM-137$
Countermeasure
Repair wiring.
Defective indoor control
PCB Replace.
Replace LM.
Normal
Adjust LM lever and then
check again.