| 摘要 |
<p>PURPOSE:To discriminate an accurate application period by integrating the time of current supply to a control part which is regarded as a practical application period of a control device. CONSTITUTION:The control device is provided with a control unit C for controlling hot water supply based upon the detection information of respective sensors S1 to S5. A hot water supplier microcomputer 10 in the unit C is provided with a timer TM as a power supply time integrating means for integrating the time of power supply to the unit C. When the hot water supplier is initialized, the supply of commercial power from a plug socket 42 is started and power is supplied to the unit C in a state adjusted to prescribed voltage through a power supply circuit 43, the timer TM starts the integration of the power supply time. During the period of power supply, the power supply time is always integrated independently of the existence of hot water supplying operation. Consequently the application period of the control device can be judged as a proper period.</p> |
