When the thermocouple detects the pilot light is off it will shut down the gas flow.
Gas furnace pilot light assembly.
This website uses cookies to ensure you get the best experience on our website.
This is all done as a safety feature so there are no gas leaks.
If the thermocouple thinks it s safe then it allows the main gas valve in the pilot assembly to open up and stay open.
If your pilot light goes out all you need to.
In this episode of repair and replace vance shows how to relight the pilot light in a standing pilot furnace.