I have a 2014 Keystone Alpine 3600 RS. Recently there has been an intermittent leak just below my rear AC Unit at the center of the ceiling by the first seam. No water at the return vents. No water at...
I would take it in to a RV service centre and have them check out the AC. Sounds like the gasket or the drain pan. AC are pretty heavy so if it was me, I would have someone else do the job. JMHO