Gas Furnace Limit Switch

Genuine oem part.

Gas furnace limit switch.

If the blower came on at the same time as the burner it would pump cold air through the house at first. Gas valve 2stage 24v 3 5 wc nat 1 2 goodman furnace gasket set. Trying to set my thermostat to use fan only for cooling. What happens if your furnace limit switch stops working properly.

It will be located at the top of the panel. The oil fired furnace fan limit switch shown in our photo below is in use on an oil fired warm air furnace where we can see about 3 4 of the silver colored dial where the fan limit switch settings are made red arrow. This safety feature prevents your furnace from overheating. Over time your furnace s limit switch can develop problems.

Why is the furnace heating the house far past the thermostat setting. In the event that the furnace fan breaks down or malfunctions but the burner continues burning and increasing the temperature within the furnace the fan limit switch will cut the power to the gas valve. Genuine oem part 20162903 rc item 2645576. How should the thermostat wires be connected to my furnace.

Goodman gas furnace limit switch opening blower only runs with a c. This is a safety feature that helps to prevent possible fires or explosions. The limit switch includes a sensor in the heat exchanger to. Genuine oem part 0151f00000ps rc item 3320750.

Benefits of fan limit switches. Remove the cover by lifting it upwards or pulling it off to reveal the body of the switch and two metal arms. A furnace has two switches called a fan limit switch and a high limit switch these switches can be separate or in one package called a combination switch. Some furnaces provide extra safety features by wiring two or three high limit switches in a series that check the temperature in the furnace at different points.

The switch makes sure the furnace is operating safely and at its desired settings. A limit switch also acts as a safety device for your furnace. Goodman furnace limit switch. Depending on your furnace model the switch will be surrounded by a silver or white cover.

The high temperature limit switch is an important device used in forced air furnaces powered by gas or heating oil. High limit switch a high limit control switch will turn off the gas to a furnace if the temperature becomes too high. Locate the white limit switch. It s also known as a fan limit switch or simply a limit switch.

A c electric blower motor issue. If the temperature inside of the plenum gets too hot it shuts off the gas supply to your burners to prevent your furnace and heat exchanger from overheating.