Troubleshooting SiENBE04-507A
130 Service Diagnosis
4.16 Compressor System Sensor Abnormality
Remote
Controller
Display
HO
Method of
Malfunction
Detection
The system checks the DC current before the compressor starts.
Malfunction
Decision
Conditions
If the DC current before compressor start-up is out of the range 0.5-4.5 V (sensor output
converted to voltage value) or if the DC voltage before compressor start-up is below 50 V.
Supposed
Causes
PCB defective
Broken or poorly connected harness
Troubleshooting
Check the harness S30.
Replace the harness.
No problem. Keep on
running.
Replace the PCB (2).
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Is the harness broken?
Get restarted and error
displayed again?
Turn off the power and turn it
on again.
(R4564)
YES
YES
NO
NO
Caution
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