Error code reference

Norcold Refrigerator Error Code C5

Back-Up Operating System activated; thermistor has become inoperable, power board reverts to BOS mode where thermistor is ignored and thermostat setting is interpreted as a duty cycle command.

SourceNorcold Refrigerator - Service Manual: 900 & 9100 Seriesp. 9, 14, 18

Norcold codes Norcold refrigerator codes

Diagnostic procedure

The full C5 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

Replace Lamp/Thermistor Wire Assembly.

SourceNorcold Refrigerator - Service Manual: 900 & 9100 Seriesp. 9, 14, 18

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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

3 manuals in the MyPros+ library document this code for Norcold refrigerator.

Models covered by the manuals that document this code

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The full C5 procedure

Where this code is documented

Models covered by the manuals that document this code

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