Asko DBI663 SSOF Operating Instructions Manual page 16

4 In order to inspect the drain pump, remove the colored stop on the
right in the bottom drain.
5 Turn the pump wheel located behind the drain pump stop by hand.
Carefully remove any items.
6 Replace the drain pump stop along with the fine and coarse filters.
7 Plug the machine in again.
If the dishwasher still does not start and a whirring sound is heard,
the overflow protection has been triggered.
Shut off the water.
Unplug the unit from the power outlet.
Call the Customer Care Center.
16
NOTE!
Do not forget to replace the drain pump stop.
Drain pump stop