First close the main air valve. If you can't check it yourself, it is recommended to open the window directly for ventilation, and then find a professional master to check it at home.

Usually, the alarm function of gas stove works by detecting heat source through thermal sensor. When the gas stove burns normally after ignition, the thermal sensor detects the heat source and works normally. Once the flame goes out or the sensor is broken, and the heat of the flame cannot be detected, an alarm will be given, or the voltage may be unstable and the gas is insufficient.