Product review (1 stars): This refrigerator is weak minded
Like other reviewers after about two years the chip that controls defrosting cycles goes out leaving a 1" slab of ice in the bottom of the freezer, subsequently the coils fill up with ice and the refrigerator stops cooling.
This leads to a $150 part and $260 in labor (2 hours)from appliance repair.
Whirlpool part #12784415 is about $100 on Amazon.