Jesus F Taft , CA April 23, 2022 Appliance: Samsung Refrigerator RF263BEAESG/AA Samsung Refrigerator Rf263beaesg/Aa / 0000: E 25 error on Samsung frig not defrosting and also fan was compromised due to frost build up. How to replace Refrigerator Defrost Thermostat. Changed out the defrost thermostat and fan with success, the frig has been running for 2 day with no issues. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes