The display shows L1, and the cabinet temperature is lower than the setpoint; wine may be too cold.

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

Steps:

• Verify actual temperature: Place an accurate thermometer inside the cabinet to confirm that the displayed temperature is incorrect and that the cabinet is overcooling.
• Check sensor: Inspect the cabinet temperature sensor (NTC) for dislodging or damage. A sensor not properly seated may misread the temperature.
• Test sensor resistance: With power off, measure the sensor resistance and compare it to expected values. Replace the cabinet NTC sensor if readings are out of range.
• Inspect control board: If the sensor is good, the compressor relay on the main board may be stuck closed. Replace the Transtherm main control board if the compressor runs continuously regardless of the setpoint.
• Adjust setpoint: Temporarily raise the set temperature to reduce cooling while awaiting parts.

Note: Prolonged overcooling can damage wine; address L1 promptly.