| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hot water supply system determining an optimum value of voltage supplied to a terminal device in a power saving mode without receiving influence of poor communication of the terminal device. <P>SOLUTION: In the hot water supply system including a remote control 2 receiving power supply from a water heater 1 via a communication line 6, and supplying a power saving voltage lower than in a normal mode to the remote control 2 in the power saving mode, a control part 3 of the water heater 1 stores information of a remote control 2 having past results of communication connection, and a demand voltage needed by the remote control 2 in the power saving mode in a nonvolatile storage means. The voltage to be supplied to the remote control 2 in the power saving mode is determined based on the information stored in the storage means irrespective of a circumstance of communication connection with the remote control in transition to the power saving mode. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
