Julie O Lauderhill , FL November 28, 2019 Appliance: Samsung Refrigerator RF260BEAESR/AA-0001 Samsung Refrigerator Rf260beaesr/Aa-0001: Freezer not defrosting. How to replace Refrigerator Temperature Thermistor. Changed out defrost thermostat and temperature sensors Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes