We are on our first shakedown trip with our new 2023 21NE. We are experiencing a problem with the water pump. It pressurizes the system and provides water as needed but will not shut off when the facets are closed. It does not continue to sound like it is pumping water, but is a low hum, almost like it is sucking air. I have checked all the connections and all seem tight. I do not see any indications of water leaks anywhere. Any suggestions on what to look for?
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