The working principle of the gas stove (with gas leakage protection device): the ceramic ignition needle presses the knob of the valve body, and the ignition needle starts to discharge and ignite --- then turn the knob to turn on the gas to connect to the gas from the hob, and then encounter the ignition spark It will burn, press and hold the knob and wait for a few seconds, let the thermocouple (that is, another column similar to the ignition needle, usually made of copper) be heated to a certain temperature (usually wait 3-5 seconds without letting go, this If you let go for a while and the thermocouple does not reach the rated temperature, the solenoid valve will not close, and once you let go, the gas will be cut off, and the stove will be extinguished), so that the solenoid valve inside the stove can be closed, and the gas can be continuously passed to the stove The disc continues to burn, and there are generally 4 reasons for letting go of the flame:

1. There is a problem with the thermocouple;

2. There is a problem with the solenoid valve;

3. There is a problem with the valve body;

4. There is a problem with the power cable between the three.

 

Generally, 1, 2, and especially 3 will not break easily, but according to the reason you mentioned, it can be judged: there should be a problem with the thermocouple or solenoid valve on the right, which needs specific inspection to know.

Another method you can try is to pull out the knob on the right side of the ceramic ignition needle, and stuff some paper balls or the like between the knob and the knob rod to increase the distance between the knob and the cooktop. This method is Because sometimes you will die if you don’t press the knob to the end. If this still doesn’t work, you can press and hold the knob and shake it after turning on the fire and then let go to see how it works. If these two methods cannot solve the problem, it means that the valve body of the stove is good (on the contrary, there is a problem with the knob or valve body of the valve body)! All that's left is the solenoid and the thermocouple!