I took the cover off to cleaning up the fan motor on my princess insert. Both blower fans had dust in them but I was surprised when this dust ball came out of the lower fan motor. It sure blows better now. I use a vacuum with a hose to get all the stuff out.
If you have a blower on your stove or insert it may be a good idea to check it and clean.
If you have a blower on your stove or insert it may be a good idea to check it and clean.