Mitsubishi Heavy Industries FDT45KXE6 User Manual

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324
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Error code
Remote controller:
7-segment display:
LED Green Red
Indoor
Outdoor
Content
None
Power supply system error
(Power supply to indoor unit PCB)
Stays Off Stays Off
Stays Off
2 times flash
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
Is
AC220/240V
detected between L1-N on
the inddor terminal
block?
NO
Are fuse OK?
(2 pcs.)
YES
YES
YES
Is AC18V or higher
detected between Red-
Red (CNW2) at transformer
secondary side?
YES
Is power
supply check between
- of CNW0
OK?
NO
Is power
supply check to FM,
LM, OK?
NO
NO
Note(1) FDT Series: F200, F201
O
ther than FDT: Fuse between wires
(1)
(2)
(3)
FDT Series
Other than
FDT Series
Note (2) Remove the
transformer for
other than FDT
Series. (CNW1)
Note (3)  for GND
NO
Is DC5V
detected between
-
of CNW2
?
NO
YES
YES
Check the power supply
Defective indoor power
PCB

Replace.
Replace FM, LM, etc.
Replace fuse.
Defective indoor power
PCB

Replace.
Defective indoor control
PCB

Replace.
Replace transformer.
Defective indoor control
PCB

Replace.
2. Error detection method
3 . Condition of error displayed
4. Presumable cause
• Misconnection or breakage of
connecting wires
• Blown fuse
• Faulty transformer
• Faulty indoor power PCB
• Broken harness
• Faulty indoor control PCB
Note:

Mitsubishi Heavy Industries FDT45KXE6 Specifications

General

Brand	Mitsubishi Heavy Industries
Model	FDT45KXE6
Category	Air Conditioner
Language	English