I know it was asked a couple times and you did say “all” outlets work. Just making sure the fridge outlet was one of the “all” you mentioned. Those cheap RV outlets have been known to be intermittent at times. As a matter of fact, I had the exact same issue 2 weeks ago and found the fridge outlet bad. When I wiggled it, it would make crackling noises inside like arcing was going on. I replaced it with a commercial outlet box and double outlet receptacle. All good now. If you haven’t ever taken apart an RV outlet then you’re in for a surprise. An electrical problem waiting to happen IMO. The unstripped wires are forced into a “V” shaped sharp copper piece that slices into the coating to the copper core of the wire to establish contact. In my case, one of the wires wasn’t fully pressed into the “V” shaped part and arcing whenever a gap was present.
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