Daikin 4MXL-T Series

SiUS121827E Troubleshooting for Outdoor Unit
Part 6 Service Diagnosis 221
7.15 Position Sensor Abnormality
Error Code H6
Outdoor Unit LED
Display
A j 1 i 2 i 3 h 4 h 5 h
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 5 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