Originally Posted by rbhmds
I have a 2015 Surveyor. The hot water heater works, but we only get luke warm water, anytime. I've looked for a balancing valve, maybe I'll have to pull one if the access panels to fund it, since nothing's jumping out at me? Any ideas? Thanks for the help.
You're on the right track. Look at where the water heater is on the outside, then figure out how to get to the backside of the water heater from inside the RV. You may have to remove a fake cabinet door, drawer, etc to access the bypass valves on the rear of it. You probably have either an incorrect set bypass valve (not fully closed) or a bad one. This is common
If you have the 3 valve system, you will need the handles turned like in the pic for normal use to keep the cold water from mixing in with the hot water: