The gas meter shows why the valve is closed.

First, the real undervoltage means that the pressure is not enough. This needs to be solved by contacting the gas supplier, because only they can control the gas supply pressure or repair the pipeline. There is basically no danger.

Second, it is likely that the electronic gas meter is short of electricity. Because there is an electric control valve inside the electronic gas meter. Control the valve switch according to the detected pressure, and automatically close the valve when the pressure is not enough. However, when the power is insufficient, the detection probe fails and the pressure signal is weak. However, the power consumption of the LCD panel is very small, so the LCD panel reads normally, and the words "Undervoltage" will be displayed. When the power consumption is lower, it will "close the valve". So there is no danger, and the solution is to change a new battery.

Thirdly, IC card gas meter with gas leakage alarm function can monitor the gas leakage in the meter. When the combustible gas in the meter leaks, the combustible gas detector of the gas meter will give an audible and visual alarm prompt, and the LCD screen in the meter will also display alarm information and automatically close the valve, so as to protect people's lives and property.

Extended data:

How to prevent gas deflagration accident

(1) Pay attention to the inspection period and attached inspection standards when using gas equipment; Buy special hose and its supporting hose buckle, pressure reducing valve, etc.

(2) The joint of hose, hard pipe and gas appliance must be fixed with special buckles, and it is not allowed to be fixed by wire winding or without any fixing measures.

(3) The mopping length of the hose should not be too long, generally about 1 m, and there should be no squeezing place after the whole hose is laid. Check and replace the hose regularly to prevent the hose from aging and damage due to accidental extrusion, friction and thermal radiation.

(4) When using liquefied gas cylinders, it should be noted that the cylinders should be used upright to avoid violent vibration. They should not be exposed to sunlight, boiling water or burns. Don't put anything on the cylinder to avoid fire.

(5) Residual liquid in gas cylinders is not allowed to be dumped at will, and it is absolutely not allowed for two gas cylinders to pour gas into each other privately, otherwise it will cause serious accidents.

(6) When using liquefied gas, someone should guard and stay away. Pay attention to adjust the firepower at any time to prevent the soup from overflowing to douse the flame or being blown out by the wind, causing liquefied gas leakage and causing fire and explosion accidents.

(7) It is forbidden to mix liquefied gas with electric cookers, induction cookers, alcohol stoves and coal stoves in the kitchen, and the naked flame should not be too close to the liquefied gas stove.

(8) In order to facilitate leak detection, tetrahydrothiophene, hydrogen sulfide and other "smells" will be added to natural gas and liquefied petroleum gas. Once you smell "peculiar smell", you can't use any open flames or electrical appliances. Open the door and open the window for ventilation as soon as possible, and call 96777 to report the situation to the gas company far away from the leakage area.

References:

China Fire Protection Network-Prevention of gas fires: Prevention of "leakage" and "closing the valve to cut off the gas" are the key points.