Wine cooler interior is too cold; bottles may be freezing even at moderate settings.

Safety: Unplug the unit before accessing sensors or the control board.

• Verify setpoint: Confirm the temperature setting is not at the minimum. Raise the setpoint and see if the compressor cycles off.
• Check sensor placement: Locate the cabinet temperature sensor and ensure it is properly mounted on the wall or near the evaporator, not touching the evaporator coil directly or hanging loose.
• Test sensor: Measure resistance and compare to expected values. Replace the thermistor if it reads very low resistance (indicating falsely cold).
• Observe compressor: If the compressor never shuts off even when the interior is very cold, the main control PCB relay may be stuck closed. Replace the board if necessary.