Support for yourDishwashing

Grinding noises in wash cabinet

Grinding noises can be heard in the dishwasher’s wash cabinet at the start of a programme or after 75 % of the programme sequence.

A foreign object (such as a cherry stone or a small shard of glass) could be blocking the drain pump. The drain pump or the non-return valve may be blocked.

Clean the drain pump and the non-return valve as follows:

  • Switch the dishwasher off.

  • Disconnect the mains plug.

  • Remove the filter combination from the wash cabinet.

  • Scoop the water out of the wash cabinet using a small container.

  • Press the catch for the non-return valve inwards (1).

  • Pull the non-return valve up and out (2).

  • Rinse the non-return valve well under running water.

  • Remove all foreign objects from the non-return valve.

  • The drain pump is situated under the non-return valve (see arrow).

  • Risk of injury from glass splinters.

    It is especially difficult to see glass splinters in the drain pump.

  • Remove any foreign objects from the drain pump. Check the drain pump impeller by manually turning it. You will feel a little resistance when you turn the impeller.

  • Carefully replace the non-return valve.

Ensure that the catch engages correctly.

Damage due to incorrect cleaning.

The components are delicate and can be damaged during cleaning.

Take care when cleaning the drain pump.

If the process described above does not resolve the problem, start any programme without the non-return valve and without the filter combination. Allow the programme to run for approx. 10–15 seconds. This will cause the impeller to rotate, removing any foreign objects that may be lodged there.

Additional information can be found in the linked video.

Model-specific information about faults and how to clean the drain pump and non-return valve can be found in the operating instructions.

If the fault persists, please contact Miele Customer Service or book a repair appointment online.

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