APPLIANCE TROUBLESHOOTING
Sub Zero Classic Series Refrigerator Error Codes
Find plain-language explanations for Sub ZeroClassic Series Refrigerator error codes, common causes, and troubleshooting steps you can try before requesting repair service.
3 error codes currently available
44 9 43
The dispenser secondary heater was not detected.
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dO Or
Sub-Zero Classic Series dO Or indicates that a refrigeration door has remained open for more than five minutes.
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EC 50
Sub-Zero identifies EC50 with Service flashing as excessive refrigerator compressor run time.
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Manufacturer information
ApplianceSignal troubleshooting information is based on manufacturer support documentation and rewritten in plain language.