If your system is low on freon the compressor will not run. Get a friend or neighbor that knows how to check the pressure to see if it simply low pressure. In 12 years 123a can seep out of the system and cause low pressure cutoff. 123a molecules are smaller than the old R12 and leak down over time without having a major leak. Of course there are other problems you could have, but that is a simple one to start on.
1998 Pace Arrow 35 ft. F53 Ford V10 2014 Honda CRV toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.