| 摘要 |
<p>A hot water supply system (2) is equipped with: a heater (76); a heat pump (50); a burner heating device (82); a heating-use water circulation passage (71); a thermistor (78); and a control device (100). When the detected temperature (T1) of the thermistor (78) is equal to or less than the set heating temperature minus TA, or when the detected temperature (T1) of the thermistor (78) is equal to or less than the set heating temperature minus TB (TB being less than TA) for a prescribed period of time, the control device (100) activates the burner heating device (82). Furthermore, when the detected temperature (T1) of the thermistor (78) is equal to or greater than the set heating temperature plus TC, the control device (100) stops the burner heating device (82).</p> |
