| 摘要 |
The present invention provides a hot water supply system, properly determining whether or not water inside a tank is sterilized when power is supplied after a black out. The provided hot water supply system comprises: a tank; a heat pump boiling water of the tank; a tank thermistor detecting the temperature of the water inside the tank; an external temperature thermistor detecting the outdoor air temperature; and a controller. In the hot water supply system, the controller operates the heat pump to boil the water inside the tank to reach the sterilizable temperature in the case that the temperature of the water inside the tank is smaller than the reference temperature when the power is supplied after the black out. In the hot water supply system, the controller sets the lower reference temperature, the lower external temperature. |
