A previous ignition attempt was unsuccessful. You have not waited 1 minute between ignition attempts.
If the burner has not ignited, turn the knob to 0.
Ventilate the room.
Wait for at least 1 minute before trying again.

An explosive flame/flash is generated when the gas cooktop is switched on.
If the burner has not ignited, turn the knob to 0.
Ventilate the room.
Wait for at least 1 minute before trying again.

Contact Miele Service.