See screen shots below for location of your furnace...
I have never worked on a furnace but lots of folks here will be able to advise what your next steps should be.
For future reference - always include your model and YEAR for your unit with questions. Or you can make it easy and edit your signature to include this information. Click (upper left of this screen) USER CP...then click on EDIT SIGNATURE.
MikenDebbie Aggie ‘77 in the sticks near Austin TX
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
Aussie Gus + Texas Heeler Jimmy