1, because of its own operation, the hot water of the electric water heater is heated in advance, and it is heated when it is used, so the temperature will flicker up and down.
2. During the use of electrical appliances, the sensor is damaged or the sensor wire fails.
3. If the water temperature is set too high, the exhaust temperature and pressure of the compressor will be too high, and the exchange between water and refrigerant in the water heater is not good enough, resulting in flicker.