It runs for awhile and cools. Shuts off and immediately starts again. Runs for a short time and then shuts off again. Immediately starts again. Not sure if this is called cycling. You hear the fan come on first and then the compressor seems to kick in. Cold air flowing. It runs for about 3 minutes then it completely shuts down. Then it starts again.
There is cold air blowing when it is on.
If it is the thermostat, would that affect the furnace as well?
Thanks for all your suggestions. It would be nice if it wasn't the Freon. We have never cleaned the ac unit after 4 years wintering in Florida. We do have the rig serviced every year but my guess is, that has never included cleaning the air conditioner. We obviously need to do more research about what rv maintenance should include. When you can't do it yourself you rely on the people in the know to tell you.
We are learning.