Brandy S Singer , LA October 26, 2024 Appliance: Frigidaire Freezer LFFH2067DW3 Frigidaire Freezer Lffh2067dw3: The freezer evaporator coils were freezing up and the freezer was not freezing. How to replace Freezer Defrost Heater. I replaced the defrost thermostat and the heater-defrost. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes