Product review (1 stars): SAMSUNG does NOT acknowledge their fridge has a design
Letter to Consumer Reports:
I bought this SAMSUNG RF266ABRS fridge because it was recommended by Consumer Reports  in August 2009. This fridge - and other SAMSUNG fridges - should be taken off the recommended list because there is an inherent design defect that causes ice buildup on the evaporator coils.
First there is a rattling noise as the fan hits the ice buildup.
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Then the noise stops when the ice completely blocks the fan but then there is no more cooling happening.
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There is even a class action lawsuit against SAMSUNG fridges:
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Please look into this Samsung ice buildup problem. The Samsung fridges should definitively not be on the recommended list but put on the "do not buy" list. The ice buildup issue occurs about 1 year after purchase. SAMSUNG is not acknowledging the problem and does not help its customers.
Letter to SAMSUNG:
I am deeply unsatisfied on how SAMSUNG handled the warranty policy with my SAMSUNG Fridge French Door Model RF266ABRS. This fridge was defective starting Year 1 and was not repaired appropriately the 1st time. All was done on the 1st service visit was to defrost the evaporator - not fixing the problem itself.
Of course, the problem reoccurred 1 year later and every year after that. Since the technician explained the problem, how to solve it and SAMSUNG customer service gave me a hard time because it was a few days over the 1 year purchase date, I dealt with it personally by unplugging the unit and let it sit unplug for 24 hours. Not a satisfactory resolution, just a quick workaround, until I got fed up with losing food and asked for SAMSUNG to resolve this problem once and for all.
First this problem should have been resolved the 1st visit. Secondly I learned recently from numerous complaints and videos on the web that this is a defective design in SAMSUNG fridges that causes the ice buildup on the evaporator.
Here is a video showing the defrost sensor modification kit to fix evaporator ice buildup. This is for the SAMSUNG RSH1  fridge but it is the same modification that was done on my fridge by the repair technician who came to my house: [...]
Many SAMSUNG fridges have the same cooling design thus sharing the same ice buildup issue.
I was charged $104.68 to fix SAMSUNG own defective design! This is outrageous and no decent company would shift the cost from itself to their customers . It shows utter disrespect for its own customers, not counting the monetary damage. Sir, should I remind you that your customers are your most important assets and should be your priority number one!
SAMSUNG should have done everything in its power to help its loyal customers by fixing its defective fridges FREE OF CHARGE.
The technician explained that he had to move the defrost sensor away from the evaporator in order to let the defrost cycle run longer and completely defrost the evaporator from any ice buildup. He also put a wider drain clip. The older clip was too small. It would get iced up and not let water drain away from the evaporator. There is also a new metal clip that attaches to the heating element and goes inside the drain clip to heat any ice there if needed so the drain cannot get clogged. In addition, a new seal kit - put on the market by SAMSUNG 3 months ago - was used to seal the evaporator compartment to prevent moisture to get in and improve circulation airflow provided by the fan.