Hello, the company I work for has a big e pellet stove and I have been nominated to see if I can find out what's wrong with it. It seems to be functioning ok but when we shut it down, the fan keeps running.. Even an hour later, it's cold, still runs. We unplugged it, waited approx. 20 minutes, plugged it back in, and the fan came back on, the on switch came on, and began feeding pellets. I don't know much about it other than basic function and cleaning. Everything was cleaned last week including exhaust pipe. Any help would be great!! Thanks!!