Hot water PSI

[Cntyview]

Our hot water only runs hot for 30 seconds then to no water at all. Cold runs fine, this is on dry camp and city water. Ive exercised The Natulius Valves, when sits over night we have hot water psi again for about 30 seconds then stops, no leaks in system ???

[Country Campers]

Model and year of your RV will help, also is this a tankless water heater?

Brian

[Cntyview]

Its a 2018. Momentum 328M regulator hot water heater finally got ahold of tech support they said check valve on outlet side of the HW heater, check the area need to be 5' and 120 lbs to access without tearing the plumbing and drawers out🤬 got a picture its plastic🤬

[Country Campers]

The check valve is most likely the issue , yes it is in a hard place to get to.

Brian