| 摘要 |
PROBLEM TO BE SOLVED: To cope with secular change of a pressure sensor and promote speediness in filling of a bathtub by a method wherein every time the execution mode of filling of bathtub repeated a number of times is effected as precribed, pressure sensor-correcting mode is effected, the bathtub is filled to a level above a fiducial level, and by the pressure sensor output the fiducial output in a storage is rewritten. SOLUTION: By turning on an automatic bathtub-filling switch on a control panel, the repeated number of times of the execution mode is compared with a prescribed number of times. When the number of times of the execution mode effected is greater than the prescribed number of times, a correcting mode is commanded. Then in accordance with a correcting-mode program in a storage 34 a controller 34 commences the control, that is, a driving circuit 35 starts a circulating pump 15 working and hot water is supplied by a prescribed quantity at a time and in succession until a water flow sensor 17 detects the hot water. Upon detection, additional heating of the bathwater is started and the bathtub is filled until the hot water in the bathtub exceeds a fiducial water level. A pressure value read by a pressure sensor 23 is sent to the storage 34 and rewriting is done. Additionally further, hot water is supplied by a prescribed quantity and a pressure value read by the pressure sensor 23 is written; from both the pressure values the area of the opening of the bathtub and the quantity of hot water supplied is calculated and the control is ended. |
