2020 Cougar 29RKS Furnace Issues

[Rodgolding]

My furnace will run perfectly for 10-11 minutes and then the fan speeds up and a couple of seconds later the fuse for it starts to buzz and nothing else. Didn't notice any of this until this past trip to Goliad State Park and having 25 degree nights. Woke up in the middle o the night to 56 inside temp and couldn't get it up to a comfortable temp for quite a few hours. Could only run it for less than 10 minutes at a time. If I would let it go to the point of the fuse buzzing it would take 15 minutes or so before I could it started again. If I shut it off prior to that it would restart in just a couple of minutes which is what I had to do. I have pulled the wood louvered grill under the refrigerator thinking there was obstruction or something was modified by the previous owner but nothing was in the way. The squirrel cage looks clean from what I can see without pulling the unit out. Puzzled as it works fine for 10 minutes or less.

[chuckster57]

What type of fuse is in the distribution panel? There has been a number of problems reported:

https://www.keystoneforums.com/forum...t=Furnace+fuse

Here’s a thread with pics.

[Rodgolding]

That was the fix. Changed out the resettable circuit breaker fuse with a standard 15 amp fuse and bingo! Furnace runs perfectly. Thanks for the help