I have a five year old Golden Eagle Talon in my basement It.has run fairly well up until two weeks ago.First it started to load up on pellets and then would eventually burn.In fact it burned so hot that it scorched the glass.Just before it stopped working it started to howl and then shut off.Two days ago I replaced the exhaust blower ,turned it on ,it ran great and after an hour,it shut off again.Tried to start it this morning,it turns on,feeds a couple of pellets,and shuts off.Then the number two heat level light flashes.Any ideas?