Check the opening status of the gas display valve, check whether the battery power used by the gas display is sufficient, and check whether the gas meter has sufficient remaining capacity.

1. Check the opening status of the gas display valve: confirm whether there is any operation error. Clockwise usually means off, counterclockwise means on. Pay attention to the markings on the valve to ensure correct operation.

2. Check whether the battery used by the gas monitor has sufficient power: insufficient battery power may cause the valve to close. Replace the battery with a new one and try to open the valve again.

3. Check that the gas meter has sufficient balance: If the balance is insufficient, you can purchase natural gas by recharging, and then insert the gas card into the gas meter card slot to restore gas supply.