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Carry out the following steps once the oven has cooled down completely:

Check that the door is properly positioned on its hinges and that the lock is in the correct position.

Check whether the seal is positioned properly all the way around (for further details, see the operating instructions).

For this reason, it is best to clean the seal every time the oven is used using a clean sponge and warm water with a little liquid dish soap or with a damp microfiber cloth.

Wipe the seal dry using a soft cloth.

If the door seal is brittle, cracked, or badly worn, contact Miele Service.

Use the shelf level that is best suited for the food and the operating mode according to the cooking chart. You can find the cooking chart in the “Notes on use” booklet or in the operating instructions.

Do not use the Rapid PreHeat function again if this problem occurs. This allows you to achieve an even cooking result, especially for more delicate baked goods such as cookies. Also turn off the catalyzer.