A kink or blockage in the waste water hose will affect the ability of your washing machine to drain water from the drum. Check that there are no kinks in the waste water hose by pulling the appliance out slightly and untwisting any visable kinks or bends in this hose. Also ensure that the waste water hose is not blocked by removing this hose from the siphon connection, putting the end of the hose in a bucket and selecting the drain programme. If there is a blockage, water will not fill, or struggle to fill, the bucket. If a blockage is found, clean the waste water hose and siphon.