I have a 2006 Winnebago Adventurer. Stored in my yard, but the motor has been started on a weekly basis. Need to clean inside but 100+ temps in TN has stopped us, since the a/c is not cooling. I have cleaned all the return vents, rinsed the condensor coils & changed the filter. It blows air, but not cold air with generator nor shoreline pwr. The manual says that it doesn't need refrigerant to be added.
What else do I need to do. Want to sell it, but have to get the a/c working first to clean it up. Any help would be greatly appreciated.