I have a 25PDV/55-SHP22 from 2001. It has only been being used for 4 years. When I am burning it blows cool air. I have tried multiple types of hard wood pellets. Englander had me check letters on control board which was right, the bottom 3 buttons are right at 6 1 1. The wire that replaces the thermostat. is good. I noticed the augers were loose. I took them off and greases them even though they said u never need to and it was working again. Now it is back to blowing cool air on the side blowers and warm air on the top. I looked in back and seen the grease coming out, I think the grease work had wasn't a high enough temp. grease. It seems that I don't get enough pellets again to the burn pot. Not sure if I need to put the silver high temp grease in bearings or if i can test the auger motor to see if I am getting enough power to it. Did any 1 else have a cool air problem?