Position Sensor Abnormality - Daikin FTX50GV1B Service Manual

Troubleshooting

4.20 Position Sensor Abnormality

H6
Error Code
Method of Error A compressor start-up failure is detected by checking the compressor running condition through
the position detection circuit.
Detection
Error Decision
Conditions
Supposed
Causes
81
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 5 minutes without any other error
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.
SiBE041029EB
Service Diagnosis