Samsung Refrigerator Error Code Flex ROOM Damper Heater Error

This error means the main control board has detected a fault in the heater circuit for the flex zone room damper. The damper heater prevents ice from forming on the damper mechanism that controls airflow into the flex zone compartment. The board checks the circuit by monitoring resistance across connector CN40 pins 25 and 27, where a reading of 135 ohms plus or minus 7 percent is required. A reading of 0 ohms indicates a short, while infinite resistance indicates an open circuit in the heater or wiring.

A power reset may temporarily clear the error code from the display, but the fault will return if the underlying heater circuit problem is not repaired. Because this error is triggered by an out-of-range resistance reading in a hardware circuit, the code will continue to appear until the short, open circuit, or damaged wiring is corrected. Resetting is useful for confirming whether the error is persistent, but it is not a fix.

Repair costs depend on the failed component. A replacement damper heater assembly typically ranges from $30 to $80 for the part alone. If professional labor is required, total costs including diagnosis and installation can range from $120 to $250 or more depending on your location and service provider. Wiring harness repairs, if that is the only issue, are generally on the lower end of the cost range.

A technician or confident DIYer can diagnose this error by disconnecting CN40 from the main PCB and measuring resistance between pins 25 and 27 with a multimeter. If wiring is the cause, repairing or replacing the harness is feasible for someone comfortable with appliance wiring. However, if the bimetal fuse or heater element has failed, replacing the damper heater assembly requires accessing internal components of the refrigerator, which is more involved and may be better suited for a professional.

This error does not represent an immediate safety hazard in most cases. The primary consequence is that the flex zone damper may freeze in position, preventing the flex room from maintaining its set temperature properly. A 0 ohm reading indicating a shorted heater element warrants prompt attention to prevent any further electrical damage to the circuit or PCB, but the refrigerator's main food compartments typically continue operating.