mypros+
Error code reference

Samsung Refrigerator Error Code F7

FZ-DEF (Freezer Defrost Heater) Error: defrost heater housing separation, contact error, disconnection, short circuit, temperature fuse error, or defrost does not finish after heating continuously for more than 80 minutes.

SourceSamsung RF220NCTASR/AA Refrigerator - Full Service Manualp. 45

Samsung codesSamsung refrigerator codes
Diagnostic procedure

The full F7 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 from PCB, measure resistance between CN70 Brown ↔ CN70 Gray; shall be 63 (230) ohm ±7%. 0 ohm = heater short, ∞ ohm = wire/bimetal open (must power off).

SourceSamsung RF220NCTASR/AA Refrigerator - Full Service Manualp. 45

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 F7 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

1 manual in the MyPros+ library documents this code for Samsung refrigerator.

Models covered by the manuals that document this code

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