State tax filing

I can't see that PA has anything to do with it.  It could be that PA offers to not tax interest for PA residents working with PA-located banks, and that is how they tag their 1099-INT forms, with a  PA ID code in 16 that allows PA to confirm it will not be taxable by PA
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......but as a non-PA resident, that wouldn't apply to you....You live in FL...all $$ in boxes 1&3 is (other than the exception noted above) is considered stateless, and any in box 8 might be exempt form stat taxes...only if it came from bonds issued by your state (but FL doesn't tax any of those anyhow)

A bigger set of questions...
1)  are you absolutely sure it is a 1099-INT form?  If so..NO..you do not have to file a PA tax return for that (and, if a FL resident, I would leave boxes 15 & 16 empty in the software 1099-INT form).

.... IF really a 1099-INT...
2) ..What financial institution ( exactly who and where located ) issued the 1099-INT?
3)  What other boxes on the 1099-INT have $$ entered on them.
4) did you download the 1099-INT , or did you enter the $$ manually?
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*