Englander 25 pdv pellet stove has been having green ash in it for the last couple weeks. It is on 3 and the burn pot keeps filling up. It needs to be cleaned every 3-4 days. Does anyone have any idea what is going on? It has new convection blower and auger motor this year and a new combustion blower last year. Is there a certain place I should be cleaning it that maybe I am not? Any help would be appreciated