Weird furnace noise

[Stormrider151]

I have a brand new Atwood furnace that is making strange noises. We left to go to the store and were gone about an hour. When we got back DW noticed noises coming from the furnace outside the trailer. It's more than just the igniter click but does sound as though it is trying to cycle something. I opened the slide and checked the thermostat thinking I may have switched the cheapo thermostat to heat when I turned the AC off. But no it was in the off position. I tried cycling the switch's on the thermostat but nothing changed. The only way I could stop the noise was to pull the fuse. My first thought is a bad thermostat but the AC and fan functions work fine. Possibly a bad circuit board. It's just strange that it would just start doing this without having attempted to use the furnace. I would like to try and fix this myself. the trailer is only 2 weeks old but the dealer is 100 miles away on the other side of Atlanta. Any ideas?

[TimVWulp]

Thermostat wire may have a short starting the furnace. Happened to my old tt a few years back. Wire was pinched behind the thermostat.

Hope his helps Tim

[Ford Idaho]

Is the noise is like a rapid clicking type sound?

Could be the thermostat anticipator.

https://www.google.com/search?q=anti...AUoAA&dpr=1.05

The youtube video may be what you need.

[Stormrider151]

Originally Posted by TimVWulp

Thermostat wire may have a short starting the furnace. Happened to my old tt a few years back. Wire was pinched behind the thermostat.

Hope his helps Tim

I'm wondering if I may have done something like this when I did some wiring for the tv a few day ago. I had to add a splitter, and wall plate that are on the other side of the wall from the thermostat. The thermostat is a little higher on the wall than the wall plate but it is very tight in that area. I'm going to pull the thermostat today and see if that may be the case. Thanks.

[Stormrider151]

Originally Posted by TimVWulp

Thermostat wire may have a short starting the furnace. Happened to my old tt a few years back. Wire was pinched behind the thermostat.

Hope his helps Tim

I think you probably nailed it. I pulled the thermostat and just by doing that the furnace now works properly. I checked all of the connectors and they "LOOK" good. Fortunately Evergreen gives you plenty of slack in their wiring so you can work on things. Since I have it out I think I'm going to replace it with a digital. Thanks a lot. Now I don't have to haul the trailer back to the dealer.