Method and tap for preventing shutdown of water heater from shutdown

The invention discloses a method for preventing the shutdown of water heater. In the method, the present mixed tap with both cold water inlet hermetically connecting pipe bolt and hot water inlet hermetically connecting pipe bolt having nominal pipe diameter of 10 mm, is replaced by a mixed tap with a cold water inlet pipe having pipe diameter smaller than the pipe diameter of a hot water inlet pipe, or a mixed tap with a cold water inlet hermetically connecting pipe bolt of which the pipe diameter is smaller than the pipe diameter of the hot water inlet hermetically connecting pipe bolt. According to the invention, by adopting the mixed tap with a cold water inlet pipe having pipe diameter smaller than the pipe diameter of a hot water inlet pipe, or a mixed tap with a cold water inlet hermetically connecting pipe bolt of which the pipe diameter is smaller than the pipe diameter of the hot water inlet hermetically connecting pipe bolt, the situation that water heater is shutdown or stops heating when a user blends hot water and cold water to cool water can be avoided effectively, which enables the user to obtain the effect of the present constant temperature water heater with a very low cost. Meanwhile, the tap for preventing water heater from shutdown provided by the invention has simple structure and is easy to realize, has very high generality, can be widely used in the electrical water heater, gas water heater and solar water heater.