None Power Supply System Error (Power Supply To Remote Controller) - Mitsubishi Electric FDF100VSXVD Technical Manual

Error code
None
Remote controller:
1. Applicable model
All models
2. Error detection method
3. Condition of Error displayed
4. Presumable cause
• Remote controller wire
breakage/short-circuit
• Defective remote controller
• Malfunction by noise
• Faulty indoor power PCB
• Broken harness
• Faulty indoor control PCB
Note:
L E D G r een Red
Stays OFF
Indoor
Outdoor
5. Troubleshooting
Diagnosis
loose connection of remote
controller wires?
controller wire broken or
Disconnect remote
higher detected between X-Y
of indoor unit terminal
between - of
- 156
Content
Power supply system error
(Power supply to remote controller)
Isn't there any
YES
NO
Isn't remote
YES
short-circuited?
NO
controller wires.
Is DC15V or
YES
block?
NO
Is DC180V
NO
CNW2?
YES
-
'11 • PAC-T-160
Countermeasure
Correct.
Replace wires.
Replace remote controller.
Defective indoor power
PCB Replace.
Defective indoor control
PCB Replace.