Furnace Fan Limit Switch Wiring Diagram

This article series describes in detail the installation wiring of furnace combination controls also commonly called the fan limit switch on warm air heating systems.

Furnace fan limit switch wiring diagram.

Fan limit switch wiring questions answers. Collection of furnace fan relay wiring diagram. How to install and wire the honeywell l4064b combination furnace intended for honeywell fan limit switch wiring diagram by admin from the thousand photographs on the internet concerning honeywell fan limit switch wiring diagram we choices the best libraries with ideal resolution just for you all and this photos is usually among photographs series inside our greatest photos gallery concerning. Furnace fan relay timer sequencer bt13707 00 bt1370700.

The following is a wiring diagram for a honeywell fan limit switch control. Wiring diagrams furnace temperature fan limit switch. Turn the power off at the furnace and go a step further for safety and turn the power off at the breaker. We also provide a intertherm electric furnace wiring diagram.

For st andard wire push in terminals connect wires to the terminals as follows. This control can be wired to serve as a safety limit switch on a furnace by wiring just the limit terminals on the control. The fan limit control switch on a furnace regulates when the blower will come on or shut off. Downflow direct electric furnace relay installation and selection for your duo therm rv furnace limit switch part uib l.

Before beginning any wiring make sure you turn the power off. Wiring the furnace combination fan limit control using the honeywell l4064b as an example. 14 or 16 stranded wire depending on electrical requirement. 14 16 or 18 solid wire or nos.

When the device is used both to control a furnace fan on and off as well as serve as a limit switch then all four terminals are. The switch is one of the easier devices and attachments on a furnace. A wiring diagram is a streamlined conventional pictorial depiction of an electrical circuit. Fan limit control installation faqs furnace temperature switch install wire the controls l6064 doityourself.

Test and replace the fan limit switch on a furnace hvac how to. 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. Male flag connectors on both the fan and limit switches fig.