It trips the breaker in the RV. It will run until the compressor kicks in and then the breaker trips. The breaker doesn’t seem weak (not soft or easily reset). RV shows 121-118V power while hooked up at home on 30amp connection.
The RV is plugged in and runs off and on at home too. We use it at home and the ac helps keep it dehumidified all the time (south FL ...hot and humid). So, 6 years constant use. I had to replace the fan motor once. I did that myself. It was a bearing issue in the fan motor.