I have a 2016 Vengeance 39R12. When we have the hot water bypass valve set to normal, no water comes out when we turn on the hot water. There is no check valve coming out of the hot side of the hot ...
Is this rig new to you? Did you ever have hot water?Did Camping World or someone else possibly install a new heater? If so,check valve on inlet might be installed backward...no water getting in.Looks just like a pipe nipple like Roger says.
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