Error code reference

Samsung Refrigerator Error Code FF-DEF

FF-DEF Error - Separation of fresh food compartment defrost heater housing, contact error, disconnection, short circuit, or temperature fuse error. Defrosting does not finish after heating continuously for more than 80 minutes.

SourceSamsung Refrigerator - Tech Sheet: Fast Track Service (RF24FS)p. 6

Diagnostic procedure

The full FF-DEF procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Remove cable CN70 from Main PCB and measure resistance between CN70 White and CN70 Gray; should be 120(440) ohm ±7%.

SourceSamsung Refrigerator - Tech Sheet: Fast Track Service (RF24FS)p. 6

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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