Fault protection display as follows:
Digital display of the indoor malfunction
Fault code Name of the troubleshooting
E1 fault of indoor environment temperature sensor
E2 fault of 100Hz zero detection
E3 fault of indoor evaporator temperature sensor E4
fault of the indoor fan
E5 fault of the indoor EEPROM
E6, communication failures of the indoor and outdoor unit
E7 system failures (including cooling and heating)
Digital display of the outdoor malfunction
Fault code Name of the troubleshooting
F1 fault of the outdoor temperature sensor
F2 fault of the outdoor condenser temperature sensor
F3 fault of the compressor discharge temperature sensor F4
protection from excessive exhaust temperature
F5 fault of the outdoor EEPROM
F6 fault of IPDU Module
