Gas from this valve lights your pilot light and eventually lights the gas burners that heat your water.
Gas water heater burner lights then goes out.
You ll have to manually bend or straighten the thermocouple back to position.
Gas valve are allowed 30seconds to fall out.
If you can light your pilot light but it keeps going out the first item to check is the thermocouple.
Enough air still gets through to keep the pilot light lit.
A complete blockage often prevents the burner from lighting at all.
If so replace the entire valve.
The thermocouple will conclude that the pilot light is off and thus close the valve and cut off the gas supply.
A dirty pilot light for gas heaters can also be the culprit for a water heater not remaining on.
Clean those tiny vents.
Similar to how if there is insufficient flow of gas to the pilot it won t stay lit a pilot tip that.
The first fix to try when the water heater burner goes out is simple.
Pull aside the filter fabric insert brush clean.
The gas line is what provides fuel to the burner to keep it lit.
When the water heater is first lit a valve releases gas into the burner and the pilot light ignites that gas.
If your burner lights for a short time but then goes out you may have a blockage in the gas valve.
In english that means a gas valve is slowed to continue to release gas for up to 30 seconds after the pilot fails.
Burner lights and heats then goes out and takes pilot with it.
There could a fault in the gas valve s main burner solenoid causing it to draw excessive power and starving the pilot flame solenoid.
One black dial off push to pilot on w hot a notch marking b c d very hot temperature.
A partial blockage however may allow the burner to light but will not provide enough fuel to keep it lit.
But if this valve or its inner elements are damaged it can t deliver enough gas to your water heater causing it to shut on and off.