Dometic Fridge - Fails at campground/Fixed at home
We have a 7.0 cu ft Dometic in our new-to-us 27FB.
In preparation for our 1st trip, the dealer plugged the coach in the day before and turned on the fridge. The next day, when we picked it up, the fridge was working properly.
The camp ground was only 1.5 hours away. When we got there, the fridge had cooled considerable, and it was flashing the "LP" indicator. I got out to find the dealer had shut down both LP tanks ~ easy fix, right? After turning them on, purging the lines (which took WAY longer than I would have ever believed, but finally got stove burners on), we went to turn on the fridge. It would cycle on for a second, display "EO" and shut off. (Looking it up, this is the code for "no power to mother board")
We did the following:
From the outside, we checked the fuse (it was good), unplugged and re-plugged in the fridge.
Checked all the circuit breakers and fuses in the inside panel.
Tested the GFI (tripped it and re-set it)
Confirmed the coach was level.
Gave it time (tested it on Fri, Sat and Sun before leaving - still same code
Here's the funny part. We drove home, plugged in to 50 amp service...and suddenly it was working fine! Not only are we totally confused by this, but obviously don't know if it's something we need to get repaired, or some critical step we missed. We certainly don't want this to happen on any future trip!