Water pump issue

[Rvhurley]

Just picked up Class A coach After dewinterization. Water tank 75% full and pump runs fine. Tank doesn’t pressurize. My coach is a 2017 Newmar MountainAire and I’m a new user. I feel like a valve was not opened or
Closed after dewinterization procedure.

[Podivin]

Check;
The outside shower to make sure it's turned off, and not just 'off' at the shower head.

The selector valve in the wet bay to make sure it's set to 'normal' (or whatever yours says that isn't filling the water tank).

The valve on the winterizing line where the antifreeze is sucked in by the pump - this needs to be closed (off). Not sure where it would be on your rig, start in the wet bay.

Also run water in each faucet, shower and toilet to make sure there isn't air in the lines, if there is the pump won't pressurize.

["007"]

Welcome to the forum and the world of Newmar, RVhurley.
Some links for you, important info for Newmar Owners, Brochure, Owners Guide, all the links below in my signature have information for your Newmar.

The valves for water from tank should all be turned so valve is in line with pipe line, when its winterized the valves are turn closed to keep anti freeze from going into your fresh water tank. Winterizing and De-winterizing.
Enjoy the forums and safe travels.