Rinse arms do not rotate properly; dishes at the top or bottom rack are not rinsed well, no error code.

Safety: Turn off power and allow the machine to cool before removing arms.

• Remove and clean arms: Take out upper and lower rinse arms. Clean all nozzles and pivot points with a brush and descaling solution if needed.
• Check rotation: Refit and spin by hand to ensure free movement.
• Adjust loading: Avoid placing tall items where they can obstruct arm rotation.
• Verify rinse pressure: If arms still rotate slowly, check rinse pump and supply pressure.