| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method of cooling a power supply unit when abnormal heating occurs in the power supply unit of a hot water supply device.SOLUTION: A combustion fan 125 operates with an operation of a combustion burner 115. A power supply unit of a controller 130 generates power supply used in a hot water supply device 100. The power supply unit is cooled by an airflow generated by operation of the combustion fan 125. At the controller 130, a temperature monitoring unit is provided for monitoring the temperature of a power supply unit 200. The control unit of the controller 130 makes the combustion fan 125 operate when a detection temperature of the temperature monitoring unit exceeds a predetermined temperature during the stop of the combustion fan 125.</p> |
