Si20-701_B Troubleshooting by Remote Controller
178
Remote Controller Display
E5
Applicable Models
CMSQ
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 (0.5MPa or more)
Incorrect UVW wiring
Defective inverter PCB
Stop valve is not opened
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