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you've simply lost one LEG of your 50amp double-pole service....easy, happens all the time for some....so
check the campground's power pedestal outlet, and breaker set... as probably a loose wire is apparent in one or the other...
if not, then your own shore cord could have a loose connection at the plug end, or at the end which terminates within your AtS(auto transfer switch)box...
if not, check your own Main Panels' 50amp double-pole breaker, and see if one of the incoming wires to either side is loose.
just an FYI, your 50amp service is TWO different 50amp incoming lines - so when you have 'some' things working, and some thing NOT, it's evident that you have lost power from one of those lines... your main panel is 'split' with some breakers on one hot line, some on the other.... your FRONT main a/c unit will be on one side, the REAR a/c unit on the other, which is why ONE works, but not the other...
If you are using a 30amp adapter to the 30amp camgpround outlet, everything is 'working' because the adapter is able to use the power from the 'good' line and share it to both 'sides' of your RV's main panel : )
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the Turners...
two Campers, two Electric cars
former diesel pusher traveler
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