| 摘要 |
A hot water supply system includes: a water heater; a circulating water passage; a water supply passage; and a circulating pump. The water heater is configured to emergently stop if a burner is performing combustion, an air supply fan is operating, the circulating pump is not operating, and a temperature detected by an apparatus interior temperature sensor exceeds an upper limit temperature. The water heater is configured to execute an apparatus interior cooling operation of stopping combustion of the burner, driving the air supply fan, and driving the circulating pump, if the burner is performing combustion, the air supply fan is operating, the circulating pump is operating, and the temperature detected by the apparatus interior temperature sensor exceeds the upper limit temperature. |
