Gas water heater is a type of water heater that uses gas as the main energy material, and the high-temperature heat generated by gas combustion is transferred to the cold water flowing through the heat exchanger to achieve the purpose of preparing hot water. Gas fired water heaters are the mainstream water heaters that once dominated the water heater market. Their advantages are that they are ready to use, do not need to wait, and occupy a small area, which can save a lot of space for comrades living in cramped homes.

The basic working principle of a gas water heater is that cold water enters the water heater and flows through the water gas linkage valve body. Under a certain pressure difference of the flowing water, the water gas linkage valve is pushed, and the DC power microswitch is also pushed to connect the power and start the pulse igniter. At the same time, the gas transmission electromagnetic valve is opened, and the pulse igniter continues to automatically ignite again until the ignition successfully enters the normal working state, This process lasts for about 5-10 seconds continuously. When the gas water heater experiences faults such as water shortage or insufficient water pressure, power shortage, gas shortage, high hot water temperature, or accidental blowing out during operation or ignition, the pulse igniter will automatically cut off the power supply by detecting the feedback signal from the induction needle. The gas transmission solenoid valve will immediately return to the original normally closed valve state in case of power shortage, which means that the gas has been cut off at this time, Turn off the gas water heater for safety protection.