Atwood Furnace Limit Switch Location

9 times out of 10 it is the delay switch.

Atwood furnace limit switch location.

The limit switch is not hard to find or replace. This is part 1 in a sears of videos for the operation diagnosis and repair of an atwood furnace. Remove the cover by lifting it upwards or pulling it off to reveal the body of the switch and two metal arms. The fan blade assembly on the combustion chamber side stays in it s cage.

Furnace is running but not firing up so either the delay switch is broken or the circuit board. Depending on your furnace model the switch will be surrounded by a silver or white cover. The limit switch is a simple temperature controlled switch. So i did some research read manuals and narrowed it down to the sail.

It s function is to monitor the combustion chamber heat level. Locate the white limit switch. Ordered new limit switch atwood 37022 hydro flame limit switch 190 degrees around 15 with shipping paying attention to get one with correct limit temperature and also trying to find out with rv manufacturer for no reason i decided to contact them not atwood whether it s possible to take sail switch out without taking the furnace unit out. It will be located at the top of the panel.

The larger assembly needs to be removed to access the motor so it can also be removed. The limit switch is behind the blower assembly. Figure out which model of furnace you have be sure you have the correct model number the parts are different for the different models.