peirek wrote:
I had a similar problem and the coils were freezing and blocking the air flow. I could see the ice when I removed the air filters. Normally this is caused from dirty filter restricting air flow across the coils resulting in ice forming. Not so in my case. Turned out to be the evaporator temp sensor had come unclipped from the coils. I had to remove the top side cover and the housing cover to discover it. Not a normal occurrence issue but thought I would share.
PEIREK---that is more common than you think. That very same thing happened to my A/C in my living room (window unit). (Yes even the evap temp sensor problem). Mine became unclipped too.
I would bet that is what happened to the OP also. Maybe not the evap temp sensor, but I would bet its ICE likely dirty filter in the RV.