Is it possible that it is condensing water on the inside cover of the A/C unit and dripping on the floor?? Mine has done this when we where down in Tunica in very high humidity. If so, it would be considered normal and there is nothing you can do with it untill the humidity drops in the unit. I have also had condesation on the ceiling registers as well. After about a day of running the A/C, the humidity dropped enough that is was no longer a problem.