We bought it new last year and it ran great. This year we started it up and it was going fine. Now it won't start. It has power. The red call light comes on, but no fan, no pellets, nothing but the call light. We emptied out the hopper and vacuumed out the feed. It might have been jammed and there was a lot of dust in there. We replaced all three snap discs. We blew into the vacuum hose. We bypassed the hopper switch. Nothing seems to help. I've read through many posts and tried everything I find but no success. On a side note, and probably unrelated, but the last time it was working, the flame seemed longer than usual. Any suggestions?