I've noticed the same thing since our coach was virtually new. It's just not as proficient a system as on a car, although it worked good enough this season so far.
But you might want to check one thing out, regardless. Ours was repaired under warranty when I noticed during a walkaround (in '07?) that the electric fan was out of place. The streetside rear louvered door kinda hides it, so you may need to remove a couple bolts under its lower lip to fold the door up get full access.
The devices used at the factory to hold the fan in place over the radiator (condenser) fins were at best pretty flimsy. My fan had let go at the top and fallen, it's wire loom pulling it diagonally across, and the so-called cleats scraping across fins and damaging them. The repair tech in Boise fabricated a better top retaining device, basically one long cleat as opposed to the two poorly designed small ones as I recall, and meanwhile I resurrected the fins as best I could. Fortunately no tubes had been compromised. I understand there was some heads rolled back at the factory for what was deemed a totally inadequate mount configuration. Mine wasn't the only failed one practically new right out the door, and I guess the Boise tech was lauded by the factory supers for his mount redesign, which the factory thereafter supposedly implemented.
It's easy enough to check back there, and you can examine the electrical connections while you're at it to make sure they're working to activate the fan and pull air over the condenser fins when the dash switches call for it. Even if a fallen fan is an issue and you repair it, that doesn't mean the dash air will suddenly be wonderfully efficient again, if it ever was. But ours worked good enough this summer on a number of 90 degree day drives that we didn't have to kick on the genset and roof air, it has never been recharged, and so I reckon we're lucky so far.
Joel
