mypros+
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 than 80 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 FF-DEF Error 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
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.

SourceSamsung French Door Refrigerator - Service Manual: RF25/28/30 Seriesp. 56

Unlock with pass
Unlock with pass
Unlock with pass
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock FF-DEF Error procedure $9.95

Or subscribe: $29/month for all codes plus Max diagnostics, with 70 Max messages a day. Plus applicable tax.

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.

Related Samsung refrigerator error codes

All Samsung refrigerator codes

75,000+ service documents · 20,000+ error codes · 100+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax