Samsung Refrigerator Error Code F-10 segment b

F-10 segment b indicates a damper heater error on Samsung T/E/W model refrigerators. The control board has detected that the damper heater circuit is open or has a wiring defect. This means the heater responsible for keeping the damper from freezing shut is not functioning correctly. The fault can be caused by a failed heater element, a broken wire, or a loose connector terminal.

Continued use is not recommended without addressing the fault. A non-functional damper heater can allow the damper assembly to freeze in place, which disrupts airflow between compartments. This can cause inconsistent temperatures and potential food spoilage. It is best to diagnose and repair the issue promptly to avoid secondary problems with temperature control.

Repair costs depend on the root cause. If the fix involves reseating a connector or repairing a broken wire, costs can be minimal, generally in the range of a service call fee only. If the damper heater element needs replacement, parts typically run in the range of $20 to $80 depending on the specific model, with additional labor charges if a technician performs the repair. A full damper assembly replacement, if needed, will cost more.

Start by disconnecting the MAIN PCB CN75 connector and measuring resistance between pin 1 (Black wire) and pin 2 (Brown wire). A normal reading is 140 to 160 Ohms. If you read infinity, check for a broken wire or a terminal that has backed out of the connector. If you read 0 Ohms, the heater element has shorted and must be replaced. If the wiring checks out and the heater reads within spec, the MAIN PCB itself may need further evaluation.

A reset may temporarily clear the error code from the display, but the code will return if the underlying fault in the damper heater circuit has not been repaired. Because the control board actively monitors the heater circuit resistance, any persistent open circuit or short will trigger the error again after the unit restarts. A proper repair to the heater or wiring is necessary to permanently resolve the fault.