Service Manual

Troubleshooting SiUS071735E
91 Service Diagnosis
4.24 Position Sensor Abnormality
Error Code H6
Method of Error
Detection
A compressor start-up failure is detected by checking the compressor running condition through the
position detection circuit.
Error Decision
Conditions
 If the error repeats, the system is shut down.
 Reset condition: Continuous run for about 11 minutes without any other error
Supposed
Causes
 Power supply voltage out of specification
 Disconnection of the compressor harness
 Defective compressor
 Defective outdoor unit PCB
 Start-up failure caused by the closed stop valve
 Input voltage outside the specified range