2019 Nuevo water pump problem

Hi Andy you could try adjusting the pressure switch but mark where you start.

Could the pump have run dry and burnt out

Andy

Try this, but you'll need a multimeter.......set it to 20vdc scale.

Disconnect wires from pump, keep them very carefully apart.
Replace the fuse whether blown or not

Connect multimeter to exposed pump wires, tape will do.

Now switch on pump.
Is a voltage seen on meter? (Should be circa 11 to 14vdc)

If so, it's the pump, if not its electrical somewhere else in the circuit..

If pump, worth removing it if you can and dismantling (if you're going to have to replace it you've little to lose), almost certain it won't turn, the impeller and shaft are as one. See if this can be freed off, some aerosol lube will be good, matters not which one. If you do succeed, connect it to another 12v power source and see what happens.

It takes very little to stop these working, even a minor amount of rust on the shaft or limescale on the impeller is all it needs to fail.

Good Luck
IanH