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Jennifer StantonSep 7, 2025
Why won't my Miele Hob heat up after turning on?
- GGabriella GarciaSep 7, 2025
If '??' appears briefly in the timer display of your Miele Hob after switching it on, and the cooking zones don't heat up, the hob is likely in demonstration mode. To exit this mode, touch the '?' and '?' sensor controls simultaneously until '??' flashes alternately with '???' in the timer display.