There are no drain lines for the ac unit on the roof of the rv.
Rv roof ac drain off roof.
The fix is easy.
Turn off the air conditioner unit.
At roof top level remove the shroud covering your a c unit.
On those types of days quite a bit of water may collect in the pan of the air conditioner.
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.
How to clean the drains on you rv roof air conditioner so it doesn t backup into your rv.
I would suggest taking off the exterior shroud and metal evaporator shield and cleaning the drip pan and checking the drain holes.
Which ideally should drain the water from the evaporator coil on the roof instead of inside of the rv.
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.
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.
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.
The moisture that is removed from inside the rv must be relocated to the roof of the rv where it usually evaporates.
On very hot and humid days well over 35 of the energy used by the roof air conditioner is for moisture removal alone.