Error code
Remote control:
LED Green Red
Indoor
Stays OFF Stays OFF
Content
None
Power source system error
(Power source to indoor unit control PCB)
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
Is
AC220-240V
detected between ➀ and
➁ on the terminal block
of indoor
unit?
NO
NO
Are fuses OK?
YES
YES
YES
NO
Is the
check of resistance between
➀-➂ of CNW0
OK?
NO
Is the
checked result
of resistance of FM,
LM, etc
OK?
NO
NO
Note(1) FDT, FDE: F1, F2
FDU, FDUA: F1
(1)
(1)
Note (1) ➄ for GND
Is DC5V
detected between ➃-➄
of CNW2?
NO
Is
AC220-240V
detected between
➀ and 2/N on the terminal
block of outdoor
unit?
YES
YES
YES
YES
Is JX1 open?
Defective outdoor unit PCB
➞
Replace.
Misconnection or breakage
of connecting wires
Defective indoor unit
control or power
PCB
➞
Replace.
Replace FM, LM, etc.
Replace fuse.
Defective indoor unit
power PCB
➞
Replace.
Open JX1.
Defective indoor unit
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 unit control or
power PCB
• Broken harness
• Faulty outdoor unit PCB
Note:
'22 • PAC-SM-412
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62
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