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Maintenance
4.2 Outdoor unit error messages
MEANING OF LED ERROR MESSAGES (only on 53M units)
Error number Cause GREEN LED RED LED
1 Standby
2 Operation
3 Overvoltage protection or voltage too low
4 Compressor board EEPROM error
5 Compressor inverter error
6 Zero speed protection or synchronous fault protection
7 IPM malfunction or IGBT overcurrent protection
8 Communication error between main board and compressor board
Key:
Switched off Switched on Switched on Flashing Flashing
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