Error code reference

Samsung Refrigerator Error Code FF-DEF Error

Fresh food compartment defrost heater error; defrosting does not finish after heating continuously for more…

Fresh food compartment defrost heater error; defrosting does not finish after heating continuously for more than 80 minutes. Caused by heater housing separation, contact error, disconnection, short circuit, or temperature fuse error.

First step from the service manual

After separating MAIN PCB CN70 wire, check resistance between CN70 White and CN70 Gray; should be 120 ohm ±7% (440 ohm at 230V). 0 ohm = heater short, infinite = wire/bimetal open.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
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