Troubleshooting for Outdoor Unit SiBE121123_A
195 Service Diagnosis
7.12 Compressor Sensor System Abnormality
Error Code
H0
Method of Error
Detection
Fault condition is identified by DC current which is detected before compressor startup.
Error Decision
Conditions
When the DC current before compressor startup is other than 0.5 to 4.5 V (detected by
converting the sensor output to voltage), or the DC voltage is 50 V or less.
Supposed
Causes
Broken or disconnected harness
Defective outdoor unit PCB
Troubleshooting
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
NO
(R11712)
YES
Turn off the power and turn it on
again.
YES
NO
Replace the harness.
No problem.
Keep on running.
Replace the outdoor unit
PCB.
Is the harness broken?
Restart operation
and error displayed
again?
Check the relay harness for the
compressor.
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