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SiUS091133 Troubleshooting
Service Diagnosis 128
4.20 Position Sensor Abnormality
Remote
Controller
Display
H6
Method of
Malfunction
Detection
A compressor start-up failure is detected by checking the compressor running condition through the
position detection circuit.
Malfunction
Decision
Conditions
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 11 minutes (09/12 class) or 5 minutes (15/18/24/30/
36 class) without any other error
Supposed
Causes
Disconnection of the compressor relay cable
Defective compressor
Defective outdoor unit PCB
Start-up failure caused by the closed stop valve
Input voltage is outside the specified range.
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