How does a thermocouple work on a propane heater?
The thermocouple is the heat-sensitive safety device that prevents the release of unburned gas. The initial flame of the pilot heats the thermocouple, which will signal the valve to stay open and keep the pilot lit and the propane heater functioning.
What does the thermocouple do in a water heater?
The purpose of the thermocouple apparatus is to act as a safety device. It turns the supply of gas off when the pilot light dies out. If the thermocouple in your water heater malfunctions in some way, the pilot light simply won’t stay on.
How is the thermocouple connected to the gas line?
It is directly connected to the furnace’s gas valve. When the pilot lit goes off due to the loss of heat, this device detects it and it cuts off the fuel supply. On the other hand, when thermocouple detects the heat it keeps the gas line open.
Where does the thermocouple sit on a pilot burner?
The thermocouple is cylindrical and sits in the pilot flame; hence it will be the topmost of the pilot burner/thermocouple combination.
What’s the best way to clean a thermocouple?
Cleaning the thermocouple You can use Emery cloth sandpaper to gently clean any debris or build-up from the end of the thermocouple. If present, you should also clean off any corrosion where the power wire connects to the thermocouple terminal. Be aware, you may need to detach the thermocouple from the burner assembly to clean it thoroughly.
What does the thermocouple do in a propane heater?
The thermocouple is the heat-sensitive safety device that prevents the release of unburned gas. The initial flame of the pilot heats the thermocouple, which will signal the valve to stay open and keep the pilot lit and the propane heater functioning.
How does a thermocouple keep the pilot lit?
The job of the thermocouple is to keep the pilot lit. It does this by sending a tiny electric current to a sensor on the gas valve signaling the valve to stay open.
Can a faulty thermocouple cause a water heater to go out?
The pilot can go out for a number of other reasons, however, so if you’re having trouble getting the pilot to stay lit, the thermocouple may not be at fault. Here are a few ways to pinpoint a faulty thermocouple as the culprit. The Pilot Lights But Won’t Stay Lit If a water heater pilot won’t light at all,…
How does a thermocouple keep the gas valve open?
It does this by sending a tiny electric current to a sensor on the gas valve signaling the valve to stay open. The thermocouple can do this because, in its probe, it contains two different metals, and a voltage is generated when one of them is heated. This is the result of a phenomenon known as the Seebeck Effect.
