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Error code reference
Sub-Zero Ice Maker Error Codes
4 error codes documented with diagnostic procedures.
Have your model number? Get codes specific to your unit.
Clean Light FlashingIndicates a short or open thermistor has been detected by the electronic control board.Rapid flashing lightControl board indicator light flashes rapidly, indicating temperatures exceeded 170°F…REPLACE FILTERRed indicator light illuminates after 8000 freeze/harvest cycles to indicate the water…Slow flashing lightControl board indicator light flashes slowly, indicating the liquid line thermistor is…
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Step-by-step tests, expected values, wiring diagram references, and verified part numbers.
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Common questions
How do I find the error code on my Sub-Zero Ice Maker?
Most Sub-Zero ice makers show the code directly on the control panel display. If your model has no display, it can be read by entering diagnostic mode with the key sequence for your model. The full procedures include model-specific instructions for reading codes.
Are these codes specific to my model?
The codes here apply broadly to Sub-Zero ice makers. Meanings and diagnostic steps can vary by model and production year, so enter your model number for model-specific information and procedures.
What do I do if my code is not listed?
Some codes are model-specific or only appear in diagnostic mode. Enter your model number to get codes specific to your unit, or contact us. We update the database continuously from manufacturer service documentation.
How much does it cost to access the full diagnostic procedures?
A 3-day pass is $9.95 one-time and gives full access to all brands, codes, and procedures. Monthly access is $29/month with unlimited access to everything including Max AI diagnostics.