The control system of a household gas water heater is an electronic control system, usually equipped with a flame detection device and a control device. The control system has electronic ignition, flameout protection, safety interruption, constant water temperature, overheat protection, incomplete combustion protection functions, as well as re ignition, human-machine telephone display, alarm function, and remote control function. There are three types of gas water heater time sequence controller, digital controller, and fuzzy controller.

Gas water heater, also known as gas water heater, refers to a gas appliance that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger through combustion heating to achieve the purpose of preparing hot water.