Can you post the E-Nr number of the appliance please?
It should be on a label in the door recess.
Sorry to be the bearer of bad news.
F11 indicates a fault with the main control board.
Prepare yourself for a shock when you click on the parts link.
Click here for the part
Your FD number came crossed out so I can't tell the age.
I can tell you though, Bosch give a 2 year warranty.
If your machine is out of warranty and given the cost of the part I would suggest getting a quote for repair from www.repaircare.co.uk
Their price includes parts and labour.
Hope this is of some help.
Let me know how it goes or if you need more help