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Troubleshooting for Outdoor Unit
SiBE12-816_D
243
Service Diagnosis
7.8
Compressor Sensor System Abnormality
Remote
Controller Display
H0
Method of
Malfunction
Detection
Fault condition is identified by DC current which is detected before compressor startup.
Malfunction
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
Defective PCB
Harness disconnection / defective connection
Troubleshooting
Replace the wire harness.
Replace the outdoor unit
PCB.
(R7143)
YES
NO
Check the wire harness
Is the wire harness
damaged?
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.