PART7, 1
PART7. Trouble Shooting
1. Indoor Unit Error Display
Indoor unit and outdoor unit communication protection
Zero-crossing signal error
Indoor fan speed has been out of control
Open or short circuit of outdoor temperature sensor or outdoor unit
EEPROM parameter error
Open or short circuit of room or evaporator coil temperature sensor
Outdoor fan speed has been out of control
IBM malfunction or IGBT over-strong current protection
Over voltage or too low voltage protection
Temperature protection of compressor top.
Inverter compressor drive error
Note: E4 & P3: Reserved function.
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