These are great responses - I can't thank yall enough for your responsiveness/willingness to help. It's frustrating how little info there is in manuals on this stuff.
I won't be home until this afternoon - but I will check the water heater switch near it (or if I can't find that, will look for the breaker) - that may be part of what was causing the issue, as I have never turned the interior switch for it on - which is why the hot water was surprising. It would make sense that may have been a contributor or the cause (would be really nice if that's all it is), since it seems to intermittently jump on after a while.
I'll also check the voltage in the rig and post my findings.
