Did the system work with city water connected to be sure that everything is filled with water? Does your RV fill the water tank from the city connection by just turning a valve? If so, when the tank fill is left open after the city water is disconnected, the water pump will draw water from the bottom of the tank and pump it back into the top of thank and continue running until you turn the pump off. I suggest that you check that valve if you have not done so.Air coming out and just few drops but no consistent flow.Water pump keep running but no water coming out.
But did you close that tank fill valve once the tank was filled? What you describe is exactly what happens if that valve is still set for filling the tank.Yes I filled the fresh water tank full through fresh water inlet.Than I open water pump and open the sink faucet.Air coming out and just few drops but no consistent flow.Water pump keep running but no water coming out.
Myself and Kirk both told him the same thing.But did you close that tank fill valve once the tank was filled? What you describe is exactly what happens if that valve is still set for filling the tank.