This may be easy questions but we have a new to us hybrid that has an a/c on the roof. We are camping this weekend and it's going to be hot all 3 days. Thankfully we have the a/c or we wouldn't be camping. Do you leave your a/c running even when you aren't in the camper? We will be spending extended times away from the camper during the day having fun. I have read that they freeze up if you are not running the fan on high. Is that always the case or just on really hot days when it's almost always trying to cool? Any other tips or tricks you have learned?