Hotpoint Thermostat / Temperature Control Failure

Wine cooler too cold, bottles freezing or ice forming on back wall

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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

Stuck-closed temperature sensor circuit, Faulty main control board not cycling compressor, Miscalibrated thermostat, Shorted sensor wiring

How to Fix / Troubleshooting

Safety: Unplug the unit before testing sensors or boards.

  • Verify setpoint: Confirm the temperature setting is appropriate for wine (typically 5–18°C depending on type).
  • Check with a thermometer: Place an accurate thermometer inside to compare actual temperature to the display.
  • Inspect and test sensor: Access the cabinet NTC sensor and measure its resistance. Compare to the Hotpoint chart. Replace if readings are incorrect.
  • Check wiring for shorts: Look for sensor wires pinched together or contacting metal, which can simulate a very cold reading.
  • If sensor is good: The main control board may be misreading temperature or stuck in cooling mode. Board replacement is recommended via a qualified technician.
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Repair Difficulty

Hard 4/5

Required Part

Cabinet NTC Temperature Sensor
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