Sub-Zero Ice Maker Error Codes

5 error codes for Sub-Zero ice maker models. Each links to the full diagnostic procedure from the service manual.

CodeDescription

No description available Clean Light FlashingIndicates a short or open thermistor has been detected by the electronic…Rapid flashing lightControl board indicator light flashes rapidly, indicating temperatures exceeded…REPLACE FILTERRed indicator light illuminates after 8000 freeze/harvest cycles to indicate…Slow flashing lightControl board indicator light flashes slowly, indicating the liquid line…

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Step-by-step tests with expected resistance, voltage, and continuity values
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Control board fault detected

From Service Manual 716787, p.39:

1.Access service mode to confirm the active fault code and read stored error history.

2.Measure control board supply voltage at the test points. Expected: 12 VDC and 5 VDC; a drop below 4.75 VDC on the logic rail points to a failed onboard regulator.

3.Inspect all connectors on the main control for corrosion, thermal stress, or backed-out pins. Reseat each connector with the power disconnected.

Part WPW10804018

Electronic control board

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