I would suggest taking off the exterior shroud and metal evaporator shield and cleaning the drip pan and checking the drain holes.
Rv roof ac drain off roof.
There are no drain lines for the ac unit on the roof of the rv.
How to clean the drains on you rv roof air conditioner so it doesn t backup into your rv.
Turn off the air conditioner unit.
If it is leaking inside you most likely have a clogged outlet which can be easily opened with a stiff wire probed in the drain outlet.
The fix is easy.
On those types of days quite a bit of water may collect in the pan of the air conditioner.
The reason for this gap is that on most roof top a c units the condensation drains out the bottom of the unit between the base of the air conditioner and the roof.
The moisture that is removed from inside the rv must be relocated to the roof of the rv where it usually evaporates.
At roof top level remove the shroud covering your a c unit.
The condensation drips down into a pan which has an outlet on the side of the base pan that lets the water run onto the roof.
For safety sake put a lock out tag on the switch or thermostat to warn others not to turn it on or better still disconnect the power to the rv.
Typically a few screws or nuts hold it in place.
Which ideally should drain the water from the evaporator coil on the roof instead of inside of the rv.