KitchenAid
Runaway Cooling / Thermostat Control Failure
Wine cooler overcooling; temperature drops well below setpoint and may freeze bottles
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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
Shorted temperature sensor (thermistor), Stuck relay on main control board, Miscalibrated control board, Sensor dislodged from proper location
How to Fix / Troubleshooting
Safety: Unplug the unit before accessing sensors or the control board.
- Step 1 – Verify with thermometer: Place an accurate thermometer inside and compare actual temperature to the display. If much colder, suspect control issues.
- Step 2 – Inspect thermistor placement: Remove interior panel and ensure the thermistor is properly clipped to the evaporator or wall, not touching extremely cold metal directly unless designed to.
- Step 3 – Replace thermistor: If the sensor appears damaged or readings are erratic, replace the cabinet thermistor.
- Step 4 – Control board: If a new sensor does not correct overcooling, the main control board relay may be stuck closed and should be replaced by a technician.
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Repair Difficulty
Hard
4/5
Required Part
Cabinet Temperature Sensor (Thermistor)
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