The circulation pump is blocked.
Remove the lower spray arm.
Remove the filter combination.
Pour 1 liter of hot water (max. 165°F/75°C) with 3 to 5 drops of rinse aid into the dishwasher interior.
Leave the solution to soak for 5 minutes.
Reinstall the filter combination.
Reinstall the lower spray arm.
Ensure that the filter combination lies flat in the base of the wash cabinet.
Restart the program.
Repeat the process 2 to 3 times.