The grease filter is clogged.
Rinse the grease filter in the dishwasher without dishware at a maximum temperature of 150°F (65°C). Ensure that the grease filter is placed at an angle in the dishwasher.
Repeat the process every 3–4 weeks.
Clean the grease filter more frequently. You can shorten the interval of the operating hours counter.
If the grease filter is not cleaned for 3–4 months, the grease in the filters may harden and become impossible to remove, even in a dishwasher. We recommend replacing the grease filter if this happens.
Miele recommends cleaning ventilation hoods gently and thoroughly using Miele products which also care for your appliance at the same time.
