| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot water supply device capable of detecting erroneous connection of a bath circulation circuit with high accuracy with a simple constitution.SOLUTION: A hot water supply device includes a bath circulation circuit 51 composed of a bath going passage 87 for introducing hot water/water into a bathtub, a bath returning passage 86 for leading out hot water/water from the bathtub, a bubble introducing device 55 disposed in the bath going passage 87 and generating bubbles, a bath returning pipe 56 connected to an inlet of a heat exchanger 22, and a bath going pipe 57 connected to an outlet of the heat exchanger 22, a bath circulation pump 52 disposed in the bath returning pipe 56, a flow switch 58 detecting presence or absence of water flow in the bath circulation circuit 51, and a control portion 70 determining whether connection states of the bath going passage 87 and the bath returning passage 86, and the bath going pipe 57 and the bath returning pipe 56, are normal or reverse connections on the basis of whether the flow switch 58 repeatedly detects ON and OFF, or not after operating the bath circulation pump 52. |
