Thanks for the replies.
A. We are not in a campsite or near a dealer, it is a permanent setup at the moment.
Doug:
1. I believe it to be a model 595. MGF # is B59516E711C0EMX.
2. Control board 3316230.700.
3. The old T-stat was a 3 button, the new one is a 3 button touch. 3 wires coming out of wall. Both T-stats perform the same as far as the condition I am explaining.
4. Thermister is installed as per the card on the wire. 1" up and into the fins.
5. This one is ducted.
6. Seperation plenum is installed and appears to be in very good condition.
7. 4 bolts from the inside.
Upon checking all this, I found that when I pulled the thermister out of the fins then a few seconds later the AC started. T-stat was set at 71 and the air temp inside was 79 and it was not running prior to pulling that out and letting it hand down inside the camper. While it was hanging down the unit would shut-off upon satisfaction of T-stat and the start back up if I lowered it to a colder temp. Put the Thermister back in the fins and the problem came back.
