We have the same rig, 2015 FLSA. Both of our factory ACs had the blades go out at seperate times and both sounded different when failing. Go on the roof, (shut off the unit) remove four Phillips screws on top of the shroud and examine all the blades. The forward unit started slowly rubbing and sanding the blades while the rear unit sounded like a tornado coming through. Both were easy DIY repairs.
Depending on your climate and personal comfort level, we actually added a third AC unit to combat extremely hot areas. Let us know if you have more questions or concerns.
2015 Jayco Pinnacle FLSA & 2008 Chevy Duramax
Anxiously awaiting retirement where I have been told everyday is a Saturday
2018 Jayco Pinnacle SPQS & 2008 Chevy Duramax Dually