Waterway switching control module of water heater

The utility model relates to a waterway switching control module of a water heater, which belongs to the technical field of household appliances. The waterway switching control module comprises a switching valve controlled by a control circuit, wherein the switching valve is provided with a first interface, a second interface, a third interface and a fourth interface, and is at least provided with three switching positions; when the switching valve is in the first position, only the first interface is communicated with the second interface; when the switching valve is in the second position, only the second interface is communicated with the third interface; when the switching valve is in the third position, only the third interface is communicated with the fourth interface; the control circuit includes an MCU (micro-programmed control unit) and at least one first temperature sensor placed at a hot water outlet of a first water heater; an output end of the first temperature sensor is connected with the corresponding signal input end of the MCU, and a control output end of the MCU is connected with a controlled end of the switching valve. Accordingly, the automatic and smooth switching between two varieties of water heaters can be conveniently realized in virtue of the control circuit according to the temperature monitoring and the preset reasonable conditions.