E5 Outdoor Unit: Inverter Compressor Motor Lock - Daikin RXYQ96PYDN Service Manual

SiUS34-801A_b
E5
3.17 Outdoor Unit: Inverter Compressor Motor Lock
E5
Remote
Controller
Display
Applicable RXYQ72P~240PYDN, PTJU
Models REYQ72P~240PYDN, PTJU
Method of
Inverter PC board takes the position signal from UVW line connected between the inverter and
Malfunction compressor, and the malfunction is detected when any abnormality is observed in the
phase-current waveform.
Detection
Malfunction
This malfunction will be output when the inverter compressor motor does not start up even in forced
Decision startup mode.
Conditions
Supposed
Causes
Troubleshooting
Inverter compressor lock
High differential pressure (72.5psi or more)
Incorrect UVW wiring
Faulty inverter PC board
Stop valve is left in closed.
Troubleshooting by Indication on the Remote Controller
363