http://www.ribaproductselector.com/Docs/0/22860/external/COL622860.pdf?ac= this is broken, wrong or does not exist
Paul Smith, January 2009
F11 is a Main Board connection fault. Possible cause Check wiring between main board and user interface go to link
http://www.ribaproductselector.com/Docs/0/22860/external/COL622860.pdf?ac=