my pellet stove always runs pretty good except for the dirty glass. i clean it regularly about once a week. it seems that after the stove satisfies the thermostat there is burning embers in the soot that create smoke. but in the case last night the stove failed and the remaining pellets in the burn pot were still lit creating a lot of smoke in the house. sometimes i wish the control board had a flashing light for a code coresponding to what failed just like most residential furnaces. any information would be great. thanks