AUTOMATIC HOT-WATER SUPPLIER PROVIDED WITH TIME-OUT FUNCTION FOR TEMPERATURE KEEPING OPERATION

PURPOSE:To operate economically and reduce the generation of danger, by a method wherein heat-up operation and temperature keeping operation are repeated until a set temperature keeping operation continuing time of a given period of time has elapsed and, thereafter, a circulating pump is stopped to finish the temperature keeping operation. CONSTITUTION:When heat-up operation is shifted to temperature keeping operation and a temperature keeping time is operated to measure a bathing hot-water tempera ture by a bathing hot-water temperature sensor 29 at every given times while the value Tm2 of bathing hot-water measuring temperature is lower than the value Ts3 of a set heat-up and temperature keeping temperature, a bathing OK lamp 42b is put OFF and a circulating pump 18 is driven for a predetermined period of time, thereafter, heat-up and temperature keeping operation is repeated unless otherwise a heat-up and temperature keeping switch is thrown again or a temperature keeping operation continuing time has elapsed. When a temperature keeping operation continu ing time has elapsed, temperature keeping operation is cancelled, therefore, the tempera ture keeping operation is cancelled automatically even when the putting OFF of the temperature keeping switch is forgotten.