The water boiler uses the heating of the heating tube to help the water boil. The water storage capacity of the water boiler is relatively large, and it is used in many occasions. Household water boilers usually use 220V voltage

The water boiler uses the heating of the heating tube to help the water boil. The water storage capacity of the water boiler is relatively large, and it is used in many occasions. Household water boilers usually use 220V voltage, and the capacity and power are slightly smaller. The heating tube is the heating element of the boiling water furnace, which is usually controlled on and off by the contactor. The contactor coil is controlled by a temperature control switch. When the temperature is low, the contactor pulls in and heats up. When the temperature reaches the set temperature, the contactor resets and stops heating. In the contactor coil control loop, the water level switch is connected in series at the same time. When the water level is lower than the water level switch, the contactor is not energized and the heating tube is not heated. In order to achieve the anti-dry function.

There is only one solenoid valve in the whole boiler, that is, where the gas pipeline enters the combustion chamber, there is a solenoid valve. It should be to control when the gas enters the combustion chamber and how long it can be used. Try the solenoid valve manually, if there is movement, it should be fine. So I restarted the ignition program, and the result was still unable to ignite. Where is the problem? Since there is no problem in other places, I personally feel that it is the fault of the solenoid valve, so I replaced the solenoid valve and tried it again, and a miracle happened, and the ignition was successful. So far the problem of repairing the water heater is finally solved.

I took a closer look at the solenoid valve. It turns out that the solenoid valve has not been replaced for a long time. Although it can be moved, it cannot be fully opened. Therefore, the valve that closes the gas cannot be fully opened, and the gas cannot enter the combustion chamber. Naturally, there is no way to ignite successfully. When the gas water heater is short of water or water pressure, electricity, gas, hot water temperature is too high, unexpectedly blowing out and other fault phenomena during the working process or ignition process, the pulse igniter will detect the feedback of the induction needle. The signal automatically cuts off the power supply, and the gas plays the role of safety protection. This continuous action is completed by relying on the presence of electricity.