Some AC Outlets Don't Work When On Battery Power
I own a 2019 Thor Challenger 37YT.
The 120 VAC outlets in my lavatory, plus the microwave oven, do not receive power from my inverter when only using battery power. Other AC items like the TVs and refrigerator work fine. I verified by measurement that the GFCI outlet in the lavatory does not have voltage on its "line" side.
However, when I turn the generator on, all AC items work fine. I noticed that the DC voltage jumped up to ~12.6 VDC from ~12.1 VDC.
I can't figure out why this is happening. Any thought would be greatly appreciated!!!