Blocked heating pipes or blocked surfing pipes. In either case, the water flow will be blocked. When the surfing heating function of the machine is turned on, the machine will start heating. If the water does not come out, the machine will lose its circulation function. The water in the heating pipe will be heated all the time and the temperature will be very high until the temperature control switch outside the heating pipe is cut off. Hongtaichang Foot Bathtub, Taichang Fitness Equipment Co., Ltd. is located in Shanghai, an economic and technological frontier town in China. It is a high-tech enterprise specializing in the production of health massage equipment under Taichang Group.