Whale fill slow

Neuvo 2011 model has a whale filler for fresh water.  It takes forever to fill, the owners manual is useless.  What should I press if anything on the control panel?
Feel I'm missing something.
Last van just filled with a hosepipe. Thanks.

A/S decided that a ‘hole in the wall’ that you are used to wasn’t needed on vans around your era.
They obviously realised their mistake and started fitting both options around 2015/16.
Personally, I would find a reputable company to fit a manual filler, it’s not a hard job so shouldn’t cost too much.

Check out the Faq's on the AS website, there are several reasons explained there under 'I can't fill my water tank'.

https://www.auto-sleepers.com/owners/faqs

If you continue to have trouble with your Whale filler, rather than go to the expense of fitting a direct gravity filler you could remove the solenoid valve altogether.  Water will then flow into the tank until you turn the tap off which can be done as soon as the tank starts overflowing.  In other words, it will be no different to a normal gravity fill which you are used to and nothing will need to be switched on.