Thermostat not recognizing Zone 2
In my 2012 Montana 5th wheel I have a Dometic Dual Control thermostat. All of a sudden Zone 2 doesn’t show up in thermostat controls. Zone 1 continues to work fine. I’ve checked the breaker switch, the phone line connection into the thermostat, the switch settings in side the AC unit. Nothing. Today I bought a new Dometic thermostat and it made no difference, reading out the same as the original one. Tomorrow, after I return the new thermostat and get my leg back, any suggestions on what else to check??
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