Turn off the air conditioner unit.
Rv roof ac drain off roof.
There are no drain lines for the ac unit on the roof of the rv.
At roof top level remove the shroud covering your a c unit.
I would suggest taking off the exterior shroud and metal evaporator shield and cleaning the drip pan and checking the drain holes.
On very hot and humid days well over 35 of the energy used by the roof air conditioner is for moisture removal alone.
How to clean the drains on you rv roof air conditioner so it doesn t backup into your rv.
Which ideally should drain the water from the evaporator coil on the roof instead of inside of the rv.
Typically a few screws or nuts hold it in place.
This moisture then drops down to the drip pan and is supposed to drain out the drain holes on both sides of the underside of the roof ac.
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.
One of the most common causes of the water leaking from air conditioner in rv is drain pan not able to drain the water properly.
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.
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.
On those types of days quite a bit of water may collect in the pan of the air conditioner.