According to the purpose, the electric wall-hung boiler control system is divided into a single heating control system and a dual-function bathroom constant temperature control system and heating constant temperature control system. The constant temperature control system is more complex than the electric control system of the instant electric water heater, and the sensor system associated with the system includes an external wire control system, a pressure detection system, a pipeline water flow detection system, a pipeline antifreeze system, and a superheated heating element. Temperature control system, water pump anti-seize system, etc.