Originally Posted By: Joe Thomas
This post was automatically imported from our archived forum.
I set my furnace to 65. It blows out hot air and works just fine. But once it gets to 65, it just keeps turning on the exhaust for the furnace. I have a natural gas furnace. It will click on for 5 seconds, then off, wait 5 seconds back on, then off. It will keep on doing this. Anybody know what is causing this???