Ensure the appliance is in normal operation mode (not in Sabbath mode or a power failure alarm).
Press and hold the "SuperCool" button (blue snowflake) simultaneously with the "Down" (colder) arrow button for 5 seconds . liebherr service menu
Navigate to the standard temperature display (e.g., showing °C for the fridge section). Ensure the appliance is in normal operation mode
The display will flash CS (Customer Service) or Srv . liebherr service menu