NewAir
Overcooling / Thermostat Calibration Issue
Wine cooler is too cold; bottles near the back or bottom are partially frozen even at a moderate set temperature.
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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.
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Possible Causes
Misplaced cabinet thermistor touching evaporator, Faulty temperature sensor reading too warm, Stuck compressor relay on control board
How to Fix / Troubleshooting
Safety: Unplug the cooler before moving shelves or accessing panels.
Steps to correct overcooling:
- Check temperature setting: Confirm the setpoint is appropriate (e.g., 55°F / 13°C for red wine). Increase the set temperature and monitor for changes.
- Inspect sensor placement: Locate the cabinet thermistor inside the cooler. Ensure it is not in direct contact with the evaporator plate or coil and is not buried behind bottles. It should be in free air.
- Reposition sensor if needed: Gently move the sensor away from the coldest surfaces and secure it with clips or tape as originally designed.
- Test sensor: If overcooling persists, disconnect the thermistor (with power off) and measure its resistance at room temperature. Replace with a NewAir cabinet temperature sensor / thermistor if readings are out of spec.
- Evaluate control board: If the compressor runs continuously regardless of setpoint and the sensor is good, the main control board relay may be stuck. Replace the NewAir main control board (PCB) if necessary.
Tip: Store more delicate wines away from the coldest areas (often near the evaporator) until the control issue is resolved.
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Repair Difficulty
Medium
3/5
Required Part
Cabinet Temperature Sensor (Thermistor)
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