Flameout solenoid valve has a coil like the generator, that is, when energized, the magnetic force pulls the flameout switch back to the oil, and when power is off, there is no magnetic force. The flameout is pushed to the flameout position by the spring, and the oil is not supplied. Flameout solenoid valve after long-term use, the piston is easily blocked by dust and dirt can not move, and then can not start or flameout phenomenon................................................