| 摘要 |
PURPOSE: A hot water boiler having a safety function, which prevents the burning when a user is sleeping by converting a normal mode into a sleeping mode are provided to prevent a hot water boiler exceeding a safety temperature by using a low temperature heater in a sleeping mode. CONSTITUTION: A hot water boiler(22) having a safety function comprises a hot water heater and a controller. The warm water heater comprises a first and a second heater. The warm water heater selects the one of the normal mode or the sleep mode and heats the water by a selection switch. The hot water boiler generates heat by using a first heater of high temperature. The hot water boiler generates the heat by using the second heater of the cool zone. |
