Gas Furnace Limit Switch Replacement

Locate the white limit switch.

Gas furnace limit switch replacement.

It turns out that most of the problems are caused by a clogged furnace filter or any of three easy to fix parts the igniter the flame sensor and the furnace high limit switch. B13701 88 goodman oem furnace replacement limit switch l170 30. In a forced air heating system the blower motor fan in a gas or oil fired furnace turns on in response to the setting of the fan limit switch. The limit switch includes a sensor in the heat exchanger to.

More buying choices 3 10 5 new offers hh18ha211 bryant oem furnace limit switch l225 50 by oem replm for bryant. Learn more and get free estimates. If you re willing to risk 120 and buy all three parts ahead of time you may be able to fix your own furnace in less than an hour and save a 125 service call. Depending on your furnace model the switch will be surrounded by a silver or white cover.

It will be located at the top of the panel. Free shipping on your first order shipped by amazon. 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. Over time your furnace s limit switch can develop problems.

The limit switch energizes the fan circuit when warm air in the plenum of the furnace reaches a preset temperature. When the desired temperature in the home is reached the furnace burner shuts off but. Get it as soon as sat sep 26. 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.

Remove the cover by lifting it upwards or pulling it off to reveal the body of the switch and two metal arms. What happens if your furnace limit switch stops working properly. If the blower came on at the same time as the burner it would pump cold air through the house at first. 4 1 out of 5 stars 17.