1. Clean the detergent drawer compartment water outlets. Keeping the holes of the dispenser clean will ensure the soap and fabric conditioner flush away efficiently.
For more information, see the Cleaning the detergent drawer topic.
2. Make sure the appliance is correctly levelled and if necessary adjust the feet.
For more information, see the Adjusting the feet topic.
3. Make sure the drainage hose has been correctly installed.
For more information, see the Connecting the drainage topic.
4. This problem can sometimes be caused by the mains water pressure being too high.