Power Source System Error (Power Source To Remote Control) - Mitsubishi Heavy Industries FDT200VSAPVF1 Service Manual

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 Stays OFF
Indoor
Keeps flashing 2-time flash
Outdoor
5. Troubleshooting
Diagnosis
loose connection of remote
control wire broken or
Disconnect remote
higher detected between X-Y
of indoor unit terminal
FDEN
Is 24V or higher
between (Brown-Brown) of
transformer secondary
side?
70
-
Content
Power source system error
(Power source 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
FDT, FDTC, FDU, FDUM
FDF Series
Is DC18V
between �-� of
CNW2?
YES
NO
YES
-
'14 • PAC-SM-215
Countermeasure
Correct.
Replace wires.
Replace remote control.
Defective indoor power
NO
PCB ➞ Replace.
Defective indoor control
PCB ➞ Replace.
Replace transformer.
Defective indoor control
PCB ➞ Replace.