We have 3 A/C units on the roof. They have the internal drains and they all seem to be working. However, the middle unit has started dripping condensation through the intake vent. It only seems to occur when the humidity is very high. I don't find a leak in the drains. Any ideas where this might be coming from. I wonder if it might be from the ducting in the ceiling sweating. Will appreciate any ideas where else to look, or any other sources.
This is a followup to this post. I was able to find the source of the leak. it is coming from the back of plastic connector where the condensation drain pain hose connects to the hose that goes to the bottom of the coach. I can't tell if the connector only connects these two hoses, or, if the plastic connector also is a drain to the condensation pan. I've attached a picture of the connector. Has anyone seen one of these and know their workings?
