-
119
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'19 • SCM-SM-276
Error code
Remote control:
LED Green Red
Indoor
Outdoor
Content
None
Power source system error
(Power source to indoor unit control PCB)
Stays OFF Stays OFF
–
Stays OFF
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
NO
Are fuses OK
(F1,2)?
YES
YES
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
(1)
Note (1) ➄ for GND
Is DC5V
detected between ➃-➄
of CNW2?
NO
YES
YES
YES
Is JX1 open?
Is
AC220/240V
detected between
ձ
and
ղ
on the terminal block
of indoor
unit?
NO
YES
NO
Is
AC220/240V
for 1-phase unit detected between
ձ and ղ on the terminal
block of outdoor
unit?
YES
Defective outdoor unit sub
PCB (Noise lter).
Misconnection or breakage
of connecting wires.
Defective indoor unit
control PCB
➞
Replace.
Replace FM, LM, etc.
Replace fuse.
Defective indoor unit
control 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 indoor unit control
PCB
• Broken harness
• Faulty outdoor unit sub PCB
(Noise filter)
Note:
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