I have a newer 2020 domestic A/C, which runs fine. However, the last couple times camping trips, it seems to not start up correctly once in a while. Usually, it runs fine cycling on and off as normal....
Probably a capacitor issue or low voltage. Its smart to always monitor your voltage, I want to see over 115 volts myself. You need an EMS set up if you want it automatic, surge protection is almost worthless. I just use a $11 plug in voltage meter in the kitchen and my eye balls. I'm cheap... low voltage is the biggest killer of A/C units IMO.