Why Does Pilot Light Go Out On Water Heater

2. Bent or Damaged Thermocouple

Sometimes when a water heater pilot won’t stay lit it is because there is a problem with the thermocouple. A bent thermocouple prevents the pilot light from sufficiently heating it as it is far. This will, in turn, cause the thermocouple to shut down the gas supply and as a result, the light won’t be lit. Ensure the thermocouple is close to the pilot light.

Also, a damaged thermocouple can cause the pilot light not to light since it also shuts down the gas supply which is necessary for the pilot light to light. If you notice your thermocouple is the problem consider repairing it or replacing it.

3. Dirty or Clogged Pilot Tube

Sometimes the pilot light won’t light up because the tube conveying gas is either clogged or dirty. When the pilot tube has cooled down, use a needle to undo any blockages.

4. Gas Supply

If your pilot light is gas-based, there must be sufficient gas flow for it to stay lit. Not having enough gas in the tank can make the pilot light go out. Also, make sure that all the gas valves to the pilot are open to ensure gas is flowing as it should be.