A couple of years ago, my AC would not start. I went up on the roof to look at it. On a whim I manually pushed on a blade and made the fan move a bit. I went down and turned on the AC and it ran perfectly. On my next trip of several months, I used it several times for an hour or so at a time. Again, no issues. Now the camper has been sitting unused for well over a year. I had the same issue. And the fix was the same; I moved the fan that cools the coils and it is working again.