ESIE13-02
Error Codes: Outdoor Units
109
Part 4 – Troubleshooting
4
3
4
5
4
4.4
“E5”
Compressor Motor Lock
Remote controller
display
E5
Method of
malfunction
detection
Inverter PC board takes the position signal from UVW line connected between the inverter and
compressor, and detects the position signal pattern.
Malfunction
decision conditions
The position signal with 3 times cycle as imposed frequency is detected when compressor motor
operates normally, but 2 times cycle when compressor motor locks. When the position signal in 2 times
cycle is detected.
Supposed causes
Compressor lock
High differential pressure (2.6MPa or more) starting
Incorrect UVW wiring
Faulty inverter PC board
Stop valve is left in closed.