Air Conditioning 2.0

Troubleshooting on an RV air conditioner "carrier", not working.?

Any help with would be greatly appreciated. I have a 5th wheel / RV that is about 2 years old and after setting it up and leaving it plugged in with the AC set at around 80 deg. it is not working correctly. We live about 2 hours away so checking it daily or weekly is not possible. The air condition will work at times and the service guy had us unplug it and disconnect the battery for 10 min. after reconnecting in the reverse order it worked for a while (2 days). But now no longer works, it won’t turn on. It seems like an electrical problem. When it turns on it works great, but it is one with a remote control and no wired in wall panel.

I know the explination is not great and I have done the basics (fuse, breaker on pole and in camper, batteries for the remote).

Thank you ahead of time.

And I know call a maintance man, but it will cost 1/2 the price of a new unit just to get him out here.
Thanks for the advice I will check. We stayed in it for about a week after we set it up. I don’t know if we have had a change in the electrical flow since then though

I assume you just put this unit on a site? you may not have enough power (amps) getting to unit. take your multi-tester and check the amps going to the unit, check the required amount.

What is reasonable to expect of air conditioning?