E2 stands for refrigerant leakage, refrigerant "E2" fault range: check whether the sensor connecting wire is broken, disconnected, open circuit; sensor short circuit or poor contact; sensor high temperature. Troubleshooting for refrigerant "E2": check whether the connecting wire between sensor main control board and control board is normal, check whether the magnetic valve is faulty, if not, please replace it in time. The compressor can work normally, but the cooling effect is poor, check whether the sensor connection line is damaged. Check if the condenser is clogged, clean the condenser. If the condenser is too dirty, you should clean the condenser. All three of these conditions can lead to poor cooling.
Kelixin air water heater is a water heater produced and sold by Jiangmen Kelixin Electric Technology Co.