On ours now, and the last one, if you turn it on (assuming it's really hot inside), it'll run on high fan until it cools down a little, then it'll swap over to low fan for awhile until it reaches the set temp. Some units though, seem like they get confused figuring out which fan speed they want in auto. We had the control box changed out in the Forester due to some similar problems. In our present unit, the control box is crap as well. You'll hear eratic clicking sometimes like it can't decide what to do. That's on the list of problems while it's in the shop now.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.