u/Evening_Secret9838

I am trying to de-winterize my unit….when I hook it up to water— either filling the holding tank and turning the pump on or directly to the hose, the unit gushes water from the back of the hot water tank and leaks from the inlet valve inside the trailer (pictured) . If I shut off the inlet, it doesn’t leak. Do these go bad? Is there something else I’m missing? I can provide more information as needed…