I had the same issue the first months I had the motorhome. Luckily, I was able to ask on the forum and got a quick answer. Also another freaky thing is that when the coach gets above 100 degrees inside, the air conditioner will not start. You have to get the thermostat down below 100 by using what ever means are available. I used ice in a zip lock bag placed on the thermostat for a few minutes. Happy and safe camping!
2004 Winnebago Minnie 22e(went to a nice family Oct 3, 2015)
2016 Forester 2701DS (Aug 31, 2015)
2017 Camping 12 trips 38 nights
2018 Camping 10 trips 38 nights
2019 Camping 6 trips 19 nights
2020 Camping 0 trips Cancellations 6