I have cleaned everything I can get at, room air fan, exhaust ducting, chimney, but still get the overheating error. I have room air set at 9 and feed at 7. Been dropping feed but keep getting same result. Im running out of things to check. Any help is very appreciated. Does the settings on the bottom 3 buttons have anything to do with my problem. I just bought the stove and the settings are 1-4-1. I have read that the factory settings are 6-4-1.