Several major causes of high voltage protection:
1. The flow rate of cold water supply is too small or the water filter is dirty;
2, the water quality is too bad, the air cooler is not cleaned for a long time;
3. The water tank temperature setting is too high. The recommended setting temperature is 45-55 °C (except for special units).
4. The outlet water temperature is set too high. The ideal working temperature is 55-85 °C (except for special units).