Norbert O Patriot , IN July 20, 2016 Appliance: Samsung Refrigerator RS2578SH/XAA-0000 Samsung Refrigerator Rs2578sh/Xaa-0000 / : Evaporator coil freezes up in freezer. How to replace Freezer Drain Heater. Installed new heater around coil and drain. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes