We have a 2014 Dutchmen Infinity 3750FL that has 2 air conditioners. The one in the kitchen works fine and the sensor is located in the living room area. The one in the bedroom does not work and we cannot locate any sensor for that part of the RV. Our model has the living room in the front section. We have a strong feeling that the reason the air conditioner doesn't work is because no sensor was installed to let it know to come on. Please let us know if anyone else has had this problem. If you have this model, please tell us where your bedroom sensor is located so we can see if we have one. Thank you!
I'll presume that you checked the thermostat for mode settings, temp, and so on. The auxiliary sensor is a small, square, grilled, plastic device which (in my Infinity) is in plain sight. Could your's be hidden? Behind a piece of furniture? Some obscure corner of the room?