Try turning the 12V off completely (you can use the switch by the front door), waiting 30 seconds, and turning it back on. If you thermostat come back on, you are good to go. If it doesn't it is either a defective thermostat or there is a 12V problem. You can check the power at the thermostat if you have a voltmeter.
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Roger & Mary
2017 Winnebago Navion 24V (Sold)
2014 Tiffin Phaeton 36GH (Sold)
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