Neff S51T69x3GB/50 dishwasher Error E15

I will try and help with this problem Neff S51T69x3GB/50 dishwasher

E15 indicates the anti-flood device in the base of the appliance has been activated.

Unplug the appliance.
Take the cover below the door off.
Take the insulation out of the way.
Remove any water in the base that is lifting the float.

Once removed, try the appliance again. Watch through the open inspection panel to see if the appliance is leaking.

If the float isn't up activating the switch then the switch, wiring or control board is faulty. Check the float and check the switch

Neff S51T69x3GB/50 Dishwasher