The water container is not positioned properly in the coffee machine.
Remove the water container.
Reinsert the water container.
Push in water container until it engages appears on the coffee machine display.
Remove the water container.
Reinsert the water container.
Fill the water container up to the mark.
Perform or repeat the descaling procedure.
Refer to the operating instructions for the descaling procedure.
Check whether the water hardness set on the coffee machine corresponds to the actual water hardness on-site.
After you have corrected the fault, switch the machine off, wait for a moment, then switch it back on.
You can now resume using the appliance as you wish.
If the fault message persists on the display, repeat the steps.
If the fault persists, please contact us or book a repair appointment online.