Check your Dometic thermostat. I still have an issue where the Zone 1 A/C won't come on. The problem has been intermittent and is now constant. Zone 1 misreads the internal temperature and shows anywhere from 38 - 50 degrees as the measured temperature. The thermocoupler has been replaced. Problem reoccurred. The wiring to the thermocoupler was replaced in case there was a staple piercing it. Problem reoccurred. The circuit board in the thermostat was replaced and the problem reoccurred. A new thermostat is on order and hopefully this will repair it.
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