Atwood Furnace Limit Switch Location

Depending on your furnace model the switch will be surrounded by a silver or white cover.

Atwood furnace limit switch location.

The larger assembly needs to be removed to access the motor so it can also be removed. Furnace is running but not firing up so either the delay switch is broken or the circuit board. Remove the face of the fan shroud then the blade assemblies and then the motor. This is part 1 in a sears of videos for the operation diagnosis and repair of an atwood furnace.

If the temperature of the combustion chamber exceeds the preset limit the switch will open and disrupt the flow of current to the circuit board in effect shutting down the main burner. It s function is to monitor the combustion chamber heat level. So i did some research read manuals and narrowed it down to the sail. Locate the white limit switch.

It will be located at the top of the panel. 9 times out of 10 it is the delay switch. The limit switch is not hard to find or replace. Figure out which model of furnace you have be sure you have the correct model number the parts are different for the different models.

The fan blade assembly on the combustion chamber side stays in it s cage. I tried firing up my furnace in my rv it sounded good at first until it never ignited. Remove the cover by lifting it upwards or pulling it off to reveal the body of the switch and two metal arms.