Sub-Zero
Temperature Inaccuracy – Sensor or Calibration Issue
Wine cooler temperature display is inaccurate; actual bottle temperature does not match the setpoint.
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Possible Causes
Aging or drifting thermistor, Sensor not in proper airflow, Control calibration drift, Warm air infiltration from door gasket leak
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing sensors.
Step 1 – Verify with thermometer
- Place a calibrated thermometer in the center of the compartment and compare to the display after 24 hours of stable operation.
Step 2 – Adjust setpoint
- If the difference is small (2–3°F), adjust the setpoint to compensate.
Step 3 – Inspect thermistor placement
- Ensure the thermistor is mounted as designed and not touching cold surfaces directly.
- Replace the thermistor if readings are significantly off.
Step 4 – Check gasket
- Repair or replace any leaking door gasket that may cause temperature swings.
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Repair Difficulty
Easy
2/5
Required Part
Compartment Thermistor
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