Wine cooler displays L1 or a low-temperature alarm and bottles may feel too cold or partially frozen.

Safety first: Unplug the unit before accessing controls or sensors.

Steps to correct:

• 1. Check setpoint: Verify the temperature setting is appropriate for wine storage (typically 45–65°F depending on zone). Increase the setpoint if it is too low.
• 2. Observe compressor run time: After restoring power, monitor whether the compressor runs continuously without cycling off. Continuous running suggests a control or sensor issue.
• 3. Inspect and test sensors: Check cabinet and evaporator sensors for proper mounting and resistance values. A sensor reading too warm can cause overcooling.
• 4. Control board evaluation: If sensors are correct and the compressor still runs excessively, the main control board’s compressor relay may be stuck closed. Board replacement is typically required.

Note: Until the issue is resolved, move sensitive bottles to another cooler to prevent freezing.