We have a 2013 31bhpr and keep it plugged in at property away from town during the winter. We went to visit it, after three months and noticed that the AC fan was running! The snow was all melted around the AC unit. We made sure that the thermostat was shut off when we winterized it but with no manual switch something happened and the fan has been running for months. I called Keystone and they pretty much said I was nuts, but then I called a local dealer and he said that I was the 4th person this winter that has brought up this issue. It has something to do with the way that we shut down the thermostat. So I am heading back to the property to flip the breaker for the winter.