| 摘要 |
PROBLEM TO BE SOLVED: To appropriately detect clogging of a secondary water circuit while reducing costs in an indirect heating type water heating device.SOLUTION: A water heating device 100 comprises: a primary water circuit 27 through which water heated by heat exchange with a refrigerant in a heat exchanger 21 is circulated; and a secondary circuit 28 that is connected to the primary water circuit 27 via a heat exchanger 23 and through which water is circulated. The water heating device 100 detects a temperature of the water circulated through the primary water circuit 27, and provides notification indicating that clogging occurred in the second water circuit 28 if the detected temperature of the water is equal to or higher than a first threshold value. |
