Furnace High Limit Switch Temperature Settings

On the honeywell l4064b the limit off is set to a temperature between 100 f and 250 f.

Furnace high limit switch temperature settings.

What ois a furnace limit switch. Here is a complete guide to the fan limit switch settings manual fan override temperature settings for warm air heating furnaces heating furnace controls switches. A helical bi metal probe extends from the back of the. It s possible to reset the switch at home when necessary by following a few simple steps.

Furnace fan limit switch control. How to install adjust or repair the furnace fan control or furnace limit control. 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. The switch makes sure the furnace is operating safely and at its desired settings.

The high temperature limit switch is an important device used in forced air furnaces powered by gas or heating oil. It is set to the furnace warm air temperature at which this safety switch is to turn off the oil or gas or other burner or heat source. Honeywell furnace temperature fan limit switch control the fan limit control turns the fan on and off in furnace applications. This is the highest temperature setting on a furnace combination control.

The switch is one of the easier devices and attachments on a furnace. It s also known as a fan limit switch or simply a limit switch. However for your own safety don t attempt to reset the switch without first consulting your furnace s instruction manual.