Troubleshooting SiMT041509E
75 Service Diagnosis
4.18 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
The compressor fails to start in about 15 seconds after the compressor run command signal
is sent.
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 is not as specified.
Disconnection of the compressor harness
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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