While you wait for answers, we may have found some information which could help you.
Click here for Not Getting ColdIce forming on outside of freezer?
Whirlpool Fridge Freezer CF Error?
Bosch intelligent frost free 44?
How do I mend my fridge/freezer?
Freezer builds condensation and freezes?
Faulty light in Bosch Fridge Freezer?