Quote:
Originally Posted by The Ice Man
This problem is typical in many, if not most, RV's. It is caused by temperature dominance and the solution is pretty easy. Try this and let the members know if this solves your problem:
When you first turn on the water, turn it all the way to HOT. Once the hot is flowing, then back off until you reach the desired temperature.
If you have a two valve system turn on the HOT first, then add cold.
Let us know your result.
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This is not really the issue. The single handle shower valve turns from the 6 oclock position counterclockwise to the 3 oclock position to operate. At the full open position you should be receiving the most hot water. As you rotate clockwise back to 6 oclock it would get colder. The valve handle position simply mixes the amount of hot and cold water.
On the newer RV OE shower valves, the valve handle stops at a position so that it does not maximize the hot water. It may be a feature to prevent scolding but you simply don't get hot water in the full open position after a matter of a few minutes.
I can verify this by stepping out of a luke warm shower and turning on the hot water at the sink where it remains very hot.