Furnace Fan Limit Control Switch Settings

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.

Furnace fan limit control switch settings.

The fan limit control switch on a furnace regulates when the blower will come on or shut off. The second setting is the fan on setting this is commonly 120 130. Westland michigan 48185 734 326 3900 888 828 8317. The fan limit switch temperature settings shown on the dial sketch are discussed separately.

And the high limit is 130f. Kozy king furnace 300 400 messickstove 856 452 aquastat for hydronic loop using wood boiler and oil honeywell furnace temperature fan limit switch control heating best fan in thestylishnomad com 13560 best fan thestylishnomad com 2019. Is the he limit. This is generally 100 degrees f.

A photo of a 1970 s era honeywell l4046t fan limit control installed on a gas furnace showing common wire connections on a gas furnace. Furnace fan limit switch control. At fan limit control settings. Assure that the control has been installed and wired in accordance with the manufacturer s installation instructions using the following procedures.

The three settings from low to high are 80f. It is a round silver tin disc with a temp. The the low limit is 80f. Range at the bottom.

The switch is one of the easier devices and attachments on a furnace. Hello some people switch the settings a bit but the first setting is the off settting. How to check the furnace fan limit control switch wiring. What ois a furnace limit switch.

How to install adjust or repair the furnace fan control or furnace limit control. The limit is set from the company from 170 will suffice. Below we detail the functions and normal settings for five controls found inside this device. Right now the fan limit switch has 3 temperature indicators settings visible.

In many models it also has a built in safety control for the burner to shut off at higher temperatures if the burner s inner control malfunctions.