DIYer here. I just replaced a split drain hose on my dishwasher (Zanussi ZDF 601M). The replacement hose looked exactly correct and it fitted back together nicely.
Running it generates error 20: "The water drain hose has not been correctly laid or it is bent or squashed".
It does not look squashed or kinked anywhere. Before the dishwasher displays the error, I can hear an unfamiliar flapping noise. I suspect this may be the red rubber flap on the dishwasher outlet connection...
Dishwasher drain hose blockage
Running it generates error 20: "The water drain hose has not been correctly laid or it is bent or squashed".
It does not look squashed or kinked anywhere. Before the dishwasher displays the error, I can hear an unfamiliar flapping noise. I suspect this may be the red rubber flap on the dishwasher outlet connection...
Dishwasher drain hose blockage