"E0 – error code will be displayed when the EEPROM data in the indoor unit is abnormal. E1 – error code will be displayed when the communication between indoor and outdoor units is abnormal. E3 – error code will be displayed when there is an abnormal fan speed in the indoor unit. E4 – error code will be displayed when the indoor room temperature sensor has open circuit or short cir... https://airconpros.com.sg/midea-aircon-error-code/