| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for controlling the operation of a pump of temperature controlling equipment which can be constituted at a low cost, while it ensures monitoring of a state of circulation of water. SOLUTION: In the temperature controlling equipment, the water circulation route is constituted by connecting by piping a pump 9 sending out temperature controlling water and a temperature controlling unit 2 such as a floor heating panel. The equipment has a revolution number change amount detecting means which detects the amount of change in the number of revolutions of a motor driving the pump and a discriminating means which judges that air is mixed in, when the detected amount of change in the number of revolutions exceeds a reference range, and outputs an abnormality signal. |
