I have a classic bay 1200 and I am having troubles keeping the thing going for more than three or four hours, I do a good yearly cleaning at the end of the heating season all except for removing the feed auger, the vacuum hose is blowable thru the chimney is clear it goes thru the wall 18" down 2' and horizontel 10', not sure how to access the control box to see the flashing lights, sure would be nice to wake up to a warm house, and I am an electrician so I understand most of this stuff but controls is not my strong point