I did wonder if the two were related, but what led me to believe they were not is that the fridge would still fault code even if we had the RV hooked up to our house power. Would this still lead to an indication that it is linked to the battery bank issues? Perhaps I can grab a few pictures of the battery bank as well. We hooked them up exactly as they were when we bought it, but there could be something incorrect there.
To dougrainer- It is not off level, currently just parked in the flat driveway. For voltage, we did check the plug and it tested fine. Filled the LP tank, but not sure how we would test pressure? Gas stove and furnace function fine on LP. Fridge is not in a slide out. I believe ours does not have a cooling fan from the documentation I have on it, but I can check it again. For thermistor, do you just mean disconnect entirely and see if we still get the fault code as we have been seeing?