| 摘要 |
<p>PURPOSE:To effectively utilize day power and prevent hot water interruption from being produced by providing display control means for controlling the display of the set count by additional heating count setting means in a specific state of additional heating display means and the display of the additional heating count display means. CONSTITUTION:Operation is as follows which is performed when hot water temperature in a can body 1 is lower than a specified value in a day power time zone. Once an additional heating count setting switch 6 is depressed when an additional heating display LED 7 is off (set count 0), an additional heating number display 7 segment LED 5 is lighted, and the number of times as set in previous cases 1-F is displayed on the 7 segment LED. Thereafter count-up is done each time the switch 6 is depressed. Provided the number of times is 1-F upon the setting being completed, it is stored in a set count storage part 4 as a previous value. As the additional heating count setting switch 6 is depressed when the additional heating display LED 7 is on (set count 1-F), the number of times set at present is once displayed on the additional heating count display 7 segment LED 5. This is repeated. Accordingly, confirmation of the presence of additional heating and setting of the number of times of the additional heating and so on are facilitated and executed in a simplified manner.</p> |
