Daikin FTXR-T Series, Service Manual

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Troubleshooting SiUS041829E
100 Part 6 Service Diagnosis
4.20 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