Wishing you luck, Ernie. No harm keeping a spare if the core refund isn't much. Here is some detailed information on convection fans. Written for the Bixby but much is applicable to other stoves in general.
forum.iburncorn.com/wiki/index.php/BixbyFAQ#Convection_Fan
It explains that the Bixby convection fan has internal thermal protection that cuts it out if it overheats, whether from hot bearings or from a buildup of heat inside the stove. A plugged air filter is enough to prevent the stove from adequately cooling itself. The page is worth reading.
Let us know how you make out.