He replaced the AC blower motor which pushes air across both the evaporator and the condensor. I did the same thing on my Dometic AC unit, cost $100 for a new motor.
If you take it to a repair shop it would not be practical to have them do this due to he labor costs involved. If you are handy you can do it yourself.
2002 Monaco Windsor 38 PKD
2005 Jeep Grand Cherokee w/5.7 Hemi