Tom,
Congrats to you and I know this is an exciting time. We went thru the same kind of deal with a long drive from San Diego to Houston and our OTR air quit as we were pulling into town. The Cruisairs laid down somewhere around Phoenix and the turn signal was jacked from about the time I hit I-10. I thought the coach had been parked over an indian burial ground. But it all worked out.
About the fan, I had a similar problem, but it turned out to be a stupid operator. The fan was theromostatically controlled and I didn't know it. First I couldn't get the fan door to open then the fan wouldn't work. Then I got the thermostat figured out and it works like a champ. Hopefully yours is not difficult.
Looking forward to seeing the coach at the rally.
JW