SiE18-201 Troubleshooting - Outdoor Unit Related
Service Diagnosis 241
Troubleshooting
Check No.14
Refer to P.257
NO
Could be outside causes
other than errors.
Probe where the noise
comes from, and apply
remedy required.
Probe the causes for
deformation of power
supply waveform and apply
remedy required.
Replace outdoor unit
control PC board.
(MF048)
YES
Check No. 14
Check the power supply
waveform.
Is U4 displayed?
NO
Is it deformed?
YES
1
2
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