Troubleshooting by Indication on the Remote Controller
SiUS28-902_B
110
Service Diagnosis
3.17 Inverter Compressor Motor Lock
Remote
Controller
Display
E5
Applicable
Models
RZR, RZQ
Method of Error
Detection
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
waveform.
Error Decision
Conditions
This error will be output when the inverter compressor motor does not start up even in forced
startup mode.
Supposed
Causes
Inverter Compressor lock
High differential pressure (72 psi or more)
Incorrect UVW wiring
Defective inverter PCB
Stop valve is not opened