David A Philadelphia , PA January 02, 2021 Appliance: Frigidaire All Refrigerator FRU17G4JW15 Frigidaire Refrigerator Fru17g4jw15: Would not stop running. How to replace Defrost Thermostat. Replaced defrost thermostat. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes