Replacing Limit Switch On Furnace

When the furnace is warm enough upon start up to begin heating the home about 20 degrees above room temperature it will tell the fan to come on.

Replacing limit switch on furnace.

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. Tell the fan when to come on. Free shipping on your first order shipped by amazon. The limit switch is a safety switch that monitors t.

Get it as soon as thu sep 24. A limit switch is a device that s located under your furnace s supply plenum. 4 1 out of 5 stars 16. Free shipping on your first order shipped by amazon.

The limit switch energizes the fan circuit when warm air in the plenum of the furnace reaches a preset temperature. B13701 88 goodman oem furnace replacement limit switch l170 30. A furnace s limit switch or fan limit switch has 3 main functions. The rollout limit switch activated when the burner flames are not being properly drawn into the heat exchanger must be manually reset.

You can change a limit switch. 025 29041 004 york oem furnace 3 replacement limit switch l160. More buying choices 3 10 5 new offers 47 22861 01 rheem oem furnace replacement limit switch l350. Diy with rv replacing limit switch atwood 8535 so at some point of course that was a coldest part of our trip in yellowstone furnace atwood 8535 iii started blowing cold air only.

Once the plenum reaches a specific temperature the limit switch sends a signal to the air handler to begin running and delivering warm air to your home. The primary limit switch which prevents the furnace from heating to unsafe temperatures is programmed to reset automatically after a malfunction. 4 8 out of 5 stars 21. After reading numerous articles forums manuals i started troubleshooting and found out that limit switch don t confuse it with sail switch is not.

B13701 54 goodman oem furnace replacement limit switch. 4 6 out of 5 stars 46. When the desired temperature in the home is reached the furnace burner shuts off but the blower fan continues to operate until the temperature of the plenum falls to the lower limit switch setting. In this episode of repair and replace vance shows how to replace the high limit switch in a gas furnace.