Sub-Zero Appliance Error Codes

Sub-Zero Wine Cooler Error Codes

• EC06 – Thermistor Fault: The temperature sensor is malfunctioning and causing inaccurate temperature readings.
• EC07 – Evaporator Sensor Fault: The evaporator sensor is not reporting proper temperature levels.
• EC15 – Control Board Error: Internal control board failure disrupting cooling performance.
• EC24 – Defrost Error: Defrost cycle cannot complete due to sensor or heater malfunction.
• EC40 – High Temperature Alert: Temperature inside the compartment is too high.
• EC50 – Compressor System Fault: Compressor cannot maintain proper cooling pressure.

Sub-Zero Refrigerator Error Codes

• EC10 – Refrigerator Sensor Failure: Internal sensor is reporting invalid temperature values.
• EC20 – Freezer Sensor Fault: Improper readings from the freezer compartment sensor.
• EC24 – Defrost Heater Error: Defrost system is unable to activate or complete cycle.
• EC30 – Evaporator Fan Error: Fan is not running or airflow is too weak.
• EC40 – High Temperature Condition: Refrigerator failed to maintain safe cooling levels.
• EC50 – Sealed System / Compressor Fault: Compressor is malfunctioning or losing efficiency.

Sub-Zero Freezer Error Codes

• EC20 – Freezer Sensor Failure: Sensor readings are incorrect, causing temperature instability.
• EC24 – Defrost Error: Freezer defrost cycle is not working correctly.
• EC30 – Evaporator Fan Fault: Fan is not providing airflow across the evaporator.
• EC40 – High Temperature Alarm: Freezer temperature is too high for safe operation.
• EC50 – Compressor / Sealed System Error: Freezer cannot maintain temperature due to internal cooling system failure.
• EC91 – Voltage Irregularity: Improper voltage detected; unit may shut down for protection.