Hello, I was on this site last year and learned a lot of good info. Hopefully, it can help again. I have an older model pellet stove. Its a Paragon 5440. At least 8-10 years old. The stove only runs on lower 2 settings. If on a higher setting it runs for 20 minutes or so then cuts off, filling the house with smoke. If set on the lower settings it will run for days at a time. Last year I replaced the Low Temp switch. Thinking this may be a High temp switch problem. The other problem I may have is I don't think they make replacement parts for this stove. If I need a new switch, are there any that my be comparable or maybe bypass the switch all together. I wish I could afford a new stove, but not possible now. Any help would be appreciated. Thanks to all in advance.