Ben,

Thanks for the reply. Yes water has come into the coach. The lines are clear. I took the top of the off and poured water directly into the drip pan. Water flows easily thru both drain pipes. As I did this I watched and slowly water would seep into the metal pan. I was very careful to only get water into the drip pan. That's what makes me think the plastic drip pan might have a crack in it. And yes, all my AC units are original. The control unit only had 4 buttons.

So can I change the front AC, and the control unit, then put new circuit boards in the 2 other units? Or do I need to replace all 3 A/C's and the Control Center?
What are my options? I am leaving in 2 weeks for a 7 month, 8500 mile trip and I need to figure out what I need to do.

Thanks