I recommend removing the shroud of your Advent Air RV Air Conditioner # ACM150B and just checking to make sure the drip pan drain holes aren't being blocked by anything so that the water drains out on the roof instead of inside of your trailer.
It's not unheard of but it really shouldn't be dripping that much inside of your trailer. I also recommend checking the gaskets on the unit, if you dragged them across the roof or didn't tighten the units down enough to compress the gasket it could... view full answer...
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