Hoover Thermostat / Sensor Overcooling

Wine cooler interior too cold; wine nearly freezing even at normal 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 sensor touching evaporator, Faulty NTC sensor reading too warm, Stuck compressor relay on main PCB, Incorrect thermostat calibration

How to Fix / Troubleshooting

Safety first: Unplug the unit before accessing internal panels.

Steps to correct overcooling:

  • Verify setpoint: Confirm the set temperature is appropriate for wine (e.g., 10–14°C for reds, 5–10°C for whites).
  • Check sensor placement: Remove the internal panel and ensure the cabinet sensor is not in direct contact with the evaporator coil, which can cause it to read colder than the air.
  • Test sensor: Measure the NTC sensor resistance at room temperature and compare to specifications. Replace with a Hoover-compatible sensor if out of range.
  • Observe compressor cycling: If the compressor rarely switches off, the control relay may be stuck. This typically requires replacing the main control PCB.
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Repair Difficulty

Medium 3/5

Required Part

Cabinet NTC Temperature Sensor
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