Testing running roof air via inverter

I was going shopping. I did not know how long I would be gone. There would be no point in burning fuel unnecessarily to run the roof air conditioner, so I shut the entire system off. My batteries were not low at all.

If they had designed properly, the cooling fans would run on DC independent of the inverter being on or off and should have a temperature sensor that runs them.

I will say that Magnum stood up to the plate and sent me a replacement unit.