EC36

Sub-Zero Auxiliary Sensor Fault

Wine cooler displays EC36 and may have issues with a secondary or auxiliary sensor; performance may be slightly off but unit may still run.

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failed auxiliary thermistor (e.g., return air or discharge sensor), Loose sensor connection, Damaged wiring harness, Faulty sensor input on control board

How to Fix / Troubleshooting

Safety first: Disconnect power before accessing internal components.

Step 1 – Identify sensor location

Consult your model’s documentation to locate the auxiliary sensor associated with EC36 (often in return air or near evaporator outlet).

Step 2 – Inspect and reseat

Inspect the sensor and wiring for damage.
Reseat the connector and ensure the sensor is properly positioned.

Step 3 – Replace sensor

If EC36 persists, replace the auxiliary thermistor with the correct Sub‑Zero part.

Step 4 – Control board

If a new sensor does not clear EC36, the control board may be at fault and should be evaluated by a professional.

Repair Difficulty

Hard 4/5

Required Part

Auxiliary Thermistor

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