Thanks to all who replied and for your help
Review... My a/c was blowing hot air on my brand new never been used TT 28 DSBH. I had a RV tech to my house this morning and he replaced a control box of some sort just inside the unit and it works great. The frige is working fine as well. That's all great news since we are leaving for its maiden camp out on Friday. Thanks to all the members who replied and were willing to give all the suggestions, not only did they help calm me down it showed me what a great group of people we have on our forum. Again, many thanks to all.
The Jayco dealer was also a great help by arranging the RV tech to come to my house. Pharr RV in Lubbock, Texas, your great and went way above the call,of duty to help a customer.
2013 White Hawk 28 DSBH
2011 Toyota Tundra DC 5.7L tow pkg. etc.
Equalizer brand WD hitch