–
51
–
Error code
Remote controller:
7-segment display:
LED
Green
Red
Indoor
Outdoor
Content
None
Power supply system error
(Power supply to remote controller)
Stays Off
Keeps lighting
Stays Off
Keeps lighting
1. Applicable model
5. Troubleshooting
All models
Diagnosis
Countermeasure
Isn't there any
loose connection of remote
controller wires?
Isn't remote
controller wire broken or
short-circuited?
Is 23V
or higher detected
between Brown-Brown at the
transformer secondary
side?
Is
DC18V
detected between
①
-
②
of
CNW2?
Disconnect the
remote controller
wires.
NO
Is DC15V or higher
detected between X-Y
of indoor unit terminal
block?
Other than
FDT and
FDTC Series
FDT and
FDTC Series
YES
YES
YES
YES
NO
NO
YES
NO
NO
Correct it.
Replace wires.
Replace remote controller.
Indoor power PCB
anomaly
Replace it.
Indoor control PCB
anomaly
Replace it
.
Replace transformer.
Indoor control PCB
anomaly
Replace it.
2. Error detection method
3.
Condition of error displayed
4. Presumable cause
• Remote controller wire
breakage/short-circuit
• Remote controller anomaly
• Malfunction by noise
• Indoor power PCB anomaly
• Broken harness
• Indoor control PCB anomaly
Note:
Summary of Contents for 112KXE6
Page 105: ... 101 Model FDC335KXE6 A PCB003Z035 shows local wining ...
Page 134: ... 130 PJF012D003 ...
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Page 139: ... 135 PJA012D751 b ...
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