We have a 2014 Big Country 3596RE. While camping recently, connected to shore power, our hot water became, at best, lukewarm water. We check all electrical connections and fuses ad they all checked out as good. We switched to propane and the had hot water. We don't know what happened. We started out with hot water then it wasn't hot anymore. Anyone have any ideas as to what we can try to fix it? I looked at the manuals in this site and haven't found on that matches what we need.