Juan A Reedley , CA February 14, 2016 Appliance: Samsung Refrigerator RS2556SH/XAA-0000 Samsung Refrigerator Rs2556sh/Xaa-0000 / : Ice build up in bottom of refrigerator. How to replace Refrigerator Temperature Sensor. Replace parts 4 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes