Samsung Refrigerator Error Code F-1 segment g

F-1 segment g indicates a freezer defrost failure on Samsung T, E, and W model refrigerators. It means the defrost cycle did not complete within the 70-minute time limit allowed by the control board. The fault is typically located in the defrost heater, thermal fuse, bimetal thermostat, or the wiring connecting these components. Ice buildup on the evaporator coil is a common secondary symptom.

Continuing to run the refrigerator with an active F-1 segment g error is not advisable for extended periods. Without a functioning defrost cycle, ice will accumulate on the evaporator coil and progressively block airflow, causing both the freezer and refrigerator compartments to warm up. Food safety can become a concern as temperatures rise, so the fault should be diagnosed and repaired promptly.

Repair costs vary depending on which component has failed. A thermal fuse or bimetal thermostat typically costs between $5 and $25 for the part alone, while a defrost heater assembly can range from $20 to $80. If professional labor is needed, total repair costs including parts and service can range from $100 to $300 or more depending on your location and the extent of the repair.

A knowledgeable DIYer can perform the initial diagnosis by disconnecting the CN71 connector on the main PCB and reading continuity between the White and Orange wires with a multimeter. A 0 Ohm reading points to a shorted heater, and an infinity reading points to an open thermal fuse, bimetal thermostat, or broken wire. Replacing these individual components is within reach for someone comfortable working with appliance wiring, but if the main PCB is suspected, professional service is recommended.

Resetting the refrigerator by unplugging it may temporarily clear the error display, but the underlying fault will remain. The error will return once the control board attempts and fails to complete another defrost cycle. A proper repair requires identifying and replacing the failed component, whether that is the heater, thermal fuse, bimetal thermostat, or wiring.