I will check that outside receptacle, thanks. that is often the culprit in these GFCI episodes.
I did some of checking and no luck. ( Fridge unplugged, swapped extension cords and adapters, nothing plugged into the receptacles in that circuit.) The converter is with the galley receptacle circuit which is GFCI not popped. Water heater electic not connected. (that circuit worked though) It is just the one receptacle circuit which also has a couple of 120v lights to it.
I was surprised when the GFCI receptacle was popped, that it still worked and showed the two lights for normal on the tester, but the rest of the receptacles did not work. I somehow thought that GFCI receptacle would also be dead when it is popped.
I know you can't reset it till it has power, but it would not reset even though it had the shore power. But when I plugged into the inverter for power, not shore power, the GFCI would reset, and that got all the other receptacles on that circuit working.
I can't see what is so different about the PSW inverter vs shore power from the house. Inverter is not bonded though. Uses the same cord and 30/15 adapter. Oh well.