Affected to Affected = All Affected - Should never be done
Affected to Carrier = 50% chance of Affected - Should never be done
Carrier to Carrier = 25% chance of Affected - Should never be done, as there is never a good reason to have a chance of an Affected
Clear to Affected = All Carriers, this is an acceptable breeding (provide the breeder is responsible in placement of the pups so that they are not bred to Carriers/Affected)
Here is another link explaining.
That's a great link. Thanks. I'm not great at understanding genetics but that has made it nice and clear. My own Fanconi results should be back in a couple of weeks. (Fingers Crossed)