Jose P North Miami , FL November 20, 2017 Appliance: Samsung Refrigerator RS2545SH/XAA Samsung Refrigerator Rs2545sh/Xaa: The thermal fuse issues. How to replace Refrigerator Defrost Thermal Fuse Assembly. I order new thermal fuse and installed and it been 5 day still working fine. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes