How To Reset Furnace Limit Switch. The function of your furnace limit switch is to tell the fan when to turn off and on depending on the temperature in the home. How to reset a furnace limit switch.
The limit switch is a safety control switch located on the furnace just below the plenum. It's possible to reset the switch at home when necessary by following a few simple steps. Herein, should i hit the reset button on my furnace?
I think it might be in the blower area because there are two wires running to that area apparently for no other reason.
It also shuts off the blower when the temperature drops to a certain level after the burner has shut off. It's possible to reset the switch at home when necessary by following a few simple steps. You can also shut the power off to your furnace and remove the switch. Identify the component (setting) located in between the two arms.