20 2 50
Defrost Heater Open
Description
The defrost heater circuit is open, so the unit cannot perform its automatic defrost cycle.
Appliance Error Codes Details
Additional Troubleshooting
1. Power cycle the unit by turning off the circuit breaker for 30 seconds
2. Check for excessive ice buildup on the evaporator
3. Measure defrost heater resistance for continuity
4. Contact authorized Sub-Zero service technician for heater replacement
2. Check for excessive ice buildup on the evaporator
3. Measure defrost heater resistance for continuity
4. Contact authorized Sub-Zero service technician for heater replacement
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Author:
Pavel Volkov
Created:
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