SiENBE04-808_A
Troubleshooting
Service Diagnosis
124
4.16 Compressor System Sensor Abnormality
4.16.1 20/25/35/42 Class
Remote Control
Display
H0
Method of
Malfunction
Detection
The system checks the DC current before the compressor starts.
Malfunction
Decision
Conditions
The DC current before compressor start-up is out of the range 0.5 ~ 4.5 V (sensor output
converted to voltage value)
The DC voltage before compressor start-up is below 50 V.
Supposed
Causes
Broken or disconnection of 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.
Replace the outdoor unit
PCB.
Is the harness
broken?
Restart operation and error
displayed again?
Check the relay harness for the
compressor.
No problem.
Keep on running.
SiENBE04-808_A.pdf 136
21/02/2011 13:20:03
