13,500 BTU vs 15,000 BTU second AC

TexasRedNeck wrote:
Wow. Thanks fellas. I think the original sales guy was trying to get out of having to admit his mistake. The owner took over and has called me personally several times and has stated that he will take care of it and is still giving me the option on how to handle. I just want to make sure that I understand what I am asking for, whether it will make a difference, and be as thoughtful and reasonable before making a decision.

Here is what intrigues me. The second AC is a dometic low profile 13,500, ducted with the rest of the unit AND has a wall t-stat. During our first trip it was 96 and both units ran pretty much constantly. When we started to break down the unit to go home there was water dripping from the front unit (the 13.5 the dealer added) Looking in I discovered a thin sheet of ice that had formed on the evaporator and then slid off.

I really believe that I can use more cooling capacity if it can work effectively in the ducted system.

Regarding the 30 vs 50 amp, I will use 50 amp sites until the fall and hope that 30 amp will run the 15K unit in the main living area and be enough without cranking up the second AC. I think the 15k AC pulls about 17A at start up if I recall correctly.

So why am I getting ice with a wall t-stat on the add on unit?

Is the freeze sensor not wired correctly?