Inverter Compressor Motor Lock - Daikin VRV II-Q RQYQ8-48PY1B Service Manual

Troubleshooting by Remote Controller
2.6

Inverter Compressor Motor Lock

E5
Remote
Controller
Display
Applicable RQYQ-PY1B
Models
Method of Error Inverter PCB takes the position signal from UVW line connected between the inverter and
compressor, and the error is detected when any abnormality is observed in the phase-current
Detection
waveform.
Error Decision This error will be output when the inverter compressor motor does not start up even in forced
Conditions startup mode.
Supposed
Causes
110
Inverter compressor lock
High differential pressure (0.5MPa or more)
Incorrect UVW wiring
Faulty inverter PCB
Stop valve is not opened.
SiBE341027
Service Diagnosis