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124
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'19 • SCM-SM-276
Error code
Remote control:
LED Green Red
Indoor
Outdoor
Content
Communication error at
initial operation (2/3)
Keeps ashing
Stays OFF
–
Stays OFF
1. Applicable model
5. Troubleshooting
All Models
When the fuse is blown, the
method to inspect outdoor sub
PCB before replacing the power
source fuse
Diagnosis Countermeasure
Replace the outdoor
unit sub PCB
Replace the outdoor
unit main PCB
Replace the
reactor.
Is there a
short-circuit between phases of
outdoor unit sub PCB?
Are there
cracks or burning on the power
transistor module or diode
stack?
Is reactor the anomalous?
NO
NO
NO
YES
YES
YES
Replace fuse.
2. Error detection method
3 .
Condition of error displayed
4. Presumable cause
• Blown fuse
• Faulty outdoor unit sub PCB
• Faulty outdoor unit main PCB
• Faulty reactor
Note:
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