Chris wrote:

I tried filling the bottom of the dishwasher with some water but this
which then drained but the pump kept on running and didn't make any
difference.

I had this with a Bosch. There was a float switch in the base of the
unit[1] that would run the pump if it filled with water. A slow drip
from the inlet valve joint had, over a couple of years, filled it and
finally tripped it.


[1] ie outside the usual water containing bits, 1/4" off the floor.

--
Scott

Where are we going and why am I in this handbasket?