The ironing board is not correctly engaged.
Click the ironing board into place correctly on both sides of the tower.

The ironing board makes an audible clicking sound on both sides.
The ironing board for the steam ironing system is not heating up.
Click the ironing board into place correctly on both sides of the tower.
The ironing board makes an audible clicking sound on both sides.
To switch on the ironing board heater element, activate the steam button.
Contact Miele Service.