If it can't be opened manually or automatically, unplug the trachea on the fixture to see if there is air. Try it manually to see if the air inlet and air outlet are normal. If it is normal, it is a fixture problem. If there is no gas, measure the solenoid valve. If the solenoid valve has electricity, it is a problem with the solenoid valve, which may be stuck. If there is no electricity, it is a circuit problem. I suggest you find someone to repair it.

What about yours?