The circuit breaker has tripped.
Reset the circuit breaker (see data plate for minimum protection rating).
The induction hob no longer responds to the controls.
Reset the circuit breaker (see data plate for minimum protection rating).
Deactivate the system/safety lock as described in the operating instructions.
Clean the control field.
Disconnect the appliance from the mains power supply for approx. 1 minute.
Switch off the relevant circuit breaker. Or remove the fine-wire fuse completely. Or switch off the residual current device.
Switch the circuit breaker back on.