You probably have a bent dirty or broken thermocouple if after following the above lighting steps the pilot light continues to go out.
Water heater pilot light sensor.
You should hear a clicking noise until the pilot burner lights.
In newer water heaters a thermocouple is often referred to as a flame sensor.
A pilot light is always burning while using a small amount of gas either a water heater is running or not.
When the water heater pilot light goes out first try relighting it following the directions on the water heater label.
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This video provides step by step instructions for replacing the igniter and flame sensor on ao smith gas water heaters.
If it s bent and isn t near the burner you can simply shut off the gas move it over and try lighting the pilot again.
Get it as soon as sat sep 26.
Light the pilot burner.
The small burning flame from the pilot light lights the main burners.
Click here https goo gl isgf5j some old water heaters will need to be lit with a match.
On older style heaters with standing pilot lights the device is typically called a thermocouple while on newer units with electronic ignition the same or virtually the same device is called a flame sensor.
Water heater pilot assembely includes pilot thermocouple and tubing natural gas.
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When the main burner extinguishes the pilot light continues burning.
The water heater pilot light is a small flame that ignites the gas burner on your water heater.
It works using a thermocouple device.
It is common on fireplaces and older cheaper furnaces and water heaters.
A pilot light is a small device that is designed to provide the flame and light the gas coming out of the gas valve and main burner.
On some water heater models you press and hold down a separate red button to start the pilot burner gas flow.
A thermocouple or flame sensor is a device used to control gas flow in gas water heaters.
If you have a new style water tank with a built in ignition switch press this button.
The thermocouple device when heated provides a small amount of voltage to a pilot solenoid valve.
The most common reason for replacing.
While holding down the pilot gas valve or the red button with one hand you will use your other hand to quickly light the pilot.
You can get replacement parts on amazon if you need them.