Chris Bryant wrote:
It sounds like the compressor might be running but the blower is not. You could get on the roof, remove the shroud (cover) and see if the blower spins. On a unit that old, there are likely to be oil ports on the motor.
I have service manuals at http://bryantrv.com/docs.html#airconditioner- yours is likely a DuoTherm.
Try that. Sometimes you have to spin the fan by hand and oil it! clean it out good. If you are not moving the camper I would just get a window air and a Dorm fridge or 2 off of craigslist thats what we have up at the lake because the camper fridge is not big enough for everything.