[Stripit]

Yes it is possible. Might be worth climbing up on the roof (carefully) and remove the a/c cover shroud. There will be 4 lag style bolts holding down the a/c unit. they are not torqued to a high number, but need to be uniformly tightened down. I've had one bolt looser than the others allowing a trickle of water to enter that corner. Might be worth a check to see if you have something like that happening.