Error code reference

Samsung Refrigerator Error Code FZ-DEF

Freezer defrost error

Freezer defrost error — defrost heater housing separation, contact error, disconnection, short circuit, or temperature fuse error; defrost does not finish after heating continuously for more than 80 minutes. Also covers freezer fan motor feedback signal line error, motor wire separation, or motor error.

First step from the service manual

Check fan motor voltage at CN76-Pin 5 (Sky-blue) to CN76-Pin 1 (Gray), should be 7V~12V. For heater, remove cable CN70 from Main PCB and measure resistance: CN70 Brown to CN70 Gray should be 63(230) ohm ±7%.

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
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