First time here looking for some advice. I have an Englander 25EP pellet stove mfg 7/2012. After starting and coming up to temperature, the blower fan that blows the air into the room comes on (on low speed), but it won't change speeds when adjusting the level on the main board. I'm thinking this might be a board issue, but not sure if it could be a defective fan or something else? Has anyone else run into this issue? Thanks