Error code reference

Sub-Zero Refrigerator Error Code Control board light - rapid flash

Thermistor detected temperatures exceeded 170°F (77°C), indicating an over-temperature limit shutdown.

SourceSub-Zero Service Manual: UC-15I: Service Manualp. 6-3, 6-4

Sub-Zero codes Sub-Zero refrigerator codes

Diagnostic procedure

The full Control board light - rapid flash 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

Look for the cause of excessive temperature; check thermistor resistance and ambient conditions.

SourceSub-Zero Service Manual: UC-15I: Service Manualp. 6-3, 6-4

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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

1 manual in the MyPros+ library documents this code for Sub-Zero refrigerator.

Models covered by the manuals that document this code

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The full Control board light - rapid flash procedure

Where this code is documented

Models covered by the manuals that document this code

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