Error code reference

Samsung Refrigerator Error Code 40C

Ice maker fan error - voltage of Main PCB CN52 pins 1 and 6 is outside the 7V~12V range.

SourceSamsung RF22N/RF28N French Door Refrigerator - Service ManualSection 4-3-3, page 95

Samsung codes Samsung refrigerator codes

Diagnostic procedure

The full 40C 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

Measure voltage of Main PCB CN52 pins 1 and 6; should be between 7V~12V.

SourceSamsung RF22N/RF28N French Door Refrigerator - Service ManualSection 4-3-3, page 95

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 40C 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

5 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.

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

The full 40C procedure

Where this code is documented

Models covered by the manuals that document this code

Related Samsung refrigerator error codes