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Error code reference

Samsung Refrigerator Error Code FZ-DEF Error

Freezer defrost heater error; defrosting does not finish after heating continuously for more than 70 minutes. Caused by heater housing separation, contact error, disconnection, short circuit, or temperature fuse error.

SourceSamsung RF25/RF28/RF30 French Door Refrigerator - Full Service Manualp. 56

Samsung codesSamsung refrigerator codes
Diagnostic procedure

The full FZ-DEF Error procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Separate MAIN PCB CN70 wire from PCB; measure resistance between CN70 Brown and CN70 Gray; should be 63(230) ohm ±7%. 0 ohm = heater short, infinity = wire/bimetal open.

SourceSamsung RF25/RF28/RF30 French Door Refrigerator - Full Service Manualp. 56

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More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Where this code is documented

6 manuals in the MyPros+ library document this code for Samsung refrigerator.

Models covered by the manuals that document this code

More models are covered than are listed here.

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