| 摘要 |
<p>PURPOSE:To enable display of a short mode trouble of a switch for a hot water feeder and the like, by providing a means which inputs a short mode signal, outputted from a comparing deciding means, for driving. CONSTITUTION:When it is confirmed at F1 that an operation switch 1 is in an OFF-state, the state of a monitored switch 3 is read at F3 to a monitoring circuit to store it in a memory. Thereafter, when the operation switch 1 is switched from OFF to ON at F1, after it is confirmed at F4 that the monitored switch is switched from OFF to ON, the state of the monitored switch is read in at F5. The state of the monitored switch 3, read in when the operation switch 1 was in an OFF-state, is compared with the state of the monitored switch read when the operation switch 1 is switched to ON, and the monitored switch is switched from ON to OFF. When the two states are the same, a short display lamp 4 is driven by a comparing deciding means F6 to display the short mode of the monitored switch 3 at F7.</p> |
