I have a Bosch KAN58A55GB American style fridge freezer. The freezer keeps fluctuating in temp from frozen to non frozen and consequently lots of ice in the bottom drawer. I have tried the 48 hr defrost and the same fault has come back. Also very noisy especially after the doors have been open.
Is this easily fixed or is it an expensive repair ? Not many engineers in my neck of the woods.

Keith Smith, August 2014