| 摘要 |
PURPOSE:To make a simple structure of a hot water heater with a mid-night elctric power application and one-week reservation system by a method wherein an energization or de-energizatioi of the heater is judged with information stored in mid-night electric power application reservation memory and the day of the week specifying memory and at the same time the day of the week specicifying memory is updated. CONSTITUTION:Day of the week LEDs 19a-19g and today's day of the week display LED20a is lit, then the corresponding day of the week reservation switches 18a-18g are operated to set the today's flag in the day of the week memory. The selection switch 21 is reoperated to turn off LEDs 19a -19g and 20a, a hot waer heating day reservation display LED20b is lit and the energization allowance for the specified day is stored in the memory by reservation switches 18a-18g. With this arrangement, the microcomputer may judge the energization and de-energization with the desired program together with the feeding of the mid-night electric power with the desired program so as to control the heater and at the same time the day of week in the memory is updated and changed to the next day. With this arrangment, a system of changing of the day of the week may be simplified. |
