Robert S Destin , FL August 03, 2019 Appliance: Samsung Refrigerator RS261MDRS/XAA-01 Samsung Refrigerator Rs261mdrs/Xaa-01: Frosting up and not holding temp on either side. How to replace Refrigerator Temperature Sensor. Replaced 2 temperature sensors and thermal fuse assembly. Was easy to do because of the instructional videos. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes