Miele KM 7404 FX Operating And Installation Instructions page 13

Cleaning and care

Do not use a steam cleaning appliance to clean this hob.
The steam could reach electrical components and cause a short
circuit.

If the hob is built in over a pyrolytic oven, the hob should not be
used whilst the pyrolytic process is being carried out, as this could
trigger the overheating protection mechanism on the hob (see
relevant section).
Warning and Safety instructions
13