Samsung Refrigerator Error Code Freezer 1st digit b

This code means the main control board has detected an open circuit in the damper heater circuit. The damper heater keeps ice from blocking the airflow damper between the freezer and fresh food sections. The fault is caused by a disconnected connector, a broken wire, or a burned-out heater element. The first diagnostic step is to measure resistance at main PCB connector CN90 between the BLACK and BROWN wires, which should read 140 to 160 ohms.

The refrigerator will continue to run, but the damper heater being non-functional means ice could build up around the damper and restrict airflow between compartments. Over time this can cause temperature instability, frost accumulation, and potential food safety issues. It is best to address the fault promptly rather than continue operating the unit long-term with this error present.

If only a connector needs to be reseated, there may be no parts cost and only a service call fee, typically in the range of $75 to $150 depending on your area. A replacement damper heater element usually costs between $20 and $60 for the part itself. If the main PCB is at fault, board replacement can run between $100 and $300 or more for parts, plus labor if a technician is hired.

If the cause is a slipped connector or a loose wire, a knowledgeable DIYer can reseat the connector at CN90 after unplugging the refrigerator and potentially clear the error without buying parts. If the heater element or main PCB has failed, those components need to be replaced, which typically requires ordering specific parts and some comfort with appliance disassembly. Always unplug the refrigerator before inspecting or touching any wiring or connectors.

A power reset may temporarily clear the error code from the display, but if the underlying open circuit in the damper heater wiring or element still exists, the code will return once the control board runs its diagnostic cycle again. The fault must be physically repaired by restoring continuity to the heater circuit before the error will stay cleared.