This happens to us occasionally but NOT from the a/c. The gutter should route the a/c runoff to a spout, NOT your slideout roof. I would check the gutters first.
When it rains we get water on the slides and no, the seals don't take off all the water. At least not on any rig I have ever had. So we either raise/lower the front until the water runs off, or I get up there and sweep it off with a broom. Otherwise you will get a bath when you button things up
Scott and Liz - Southern NM
2012 Wildcat Sterling 32RL - w/level up (best option ever)
2007 Chevy 2500HD 4dr short bed Duramax w/allison
Reese Fifth Airborne air ride king pin coupler with Sidewinder