I found that the system in the mechanic bay was tied into the condensation line of the abandoned unit in the drive threw bay and the water was going to that unit and filling the pan and over flowing. I cut the abandoned unit out of that condensation line and capped. Now the only one draining is that one unit in the mechanic bay. I also blew the line out with nitrogen to insure no clogs. At this time it is draining as it should be.