| 摘要 |
PROBLEM TO BE SOLVED: To prevent times from being largely different from each other by constantly monitoring inner clocks of water heaters, in a hot water supply system in which the plurality of water heaters are connected by a system controller.SOLUTION: In a hot water supply system in which a plurality of water heaters 2, 3 are disposed, the water heaters 2, 3 respectively include control means for controlling timer reservation operation on the basis of present time data counted by inner clocks, and the control means of the plurality of water heaters 2, 3 are electrically connected to each other through a system controller, the system controller 1 includes a time monitoring section for monitoring the present clock time data counted by the inner clocks of the control means, and the time monitoring section executes prescribed time correction processing on the basis of the plurality of present time data. |
