Error code reference

Samsung Refrigerator Error Code 45

Fridge Ice Duct Heater error - resistance at CN20-"21" to "23" not within 63(230) ohm ±7%.

SourceSamsung RF27T5 French Door Refrigerator - Full Service Manualp. 79

Samsung codes Samsung refrigerator codes

Diagnostic procedure

The full 45 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

First diagnostic step

Separate MAIN PCB CN20 wire from PCB and measure resistance between CN20-"21" and CN20-"23"; should be 63(230) ohm ±7%.

SourceSamsung RF27T5 French Door Refrigerator - Full Service Manualp. 79

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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

2 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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The full 45 procedure

Where this code is documented

Models covered by the manuals that document this code

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