Display shows L1 and the temperature reading is abnormally low or flashing, sometimes with frost on bottles.

Disconnect power before adjusting sensors or panels.

L1 indicates the sensor is reading an unusually low temperature or is out of range.

• 1. Confirm actual temperature:
  • Use a separate thermometer to verify cabinet temperature.
• 2. Check sensor contact:
  • Remove the interior panel and locate the cabinet sensor.
  • Ensure it is not directly touching the evaporator coil or embedded in ice.
  • Reposition slightly away from the coil if necessary.
• 3. Inspect for overcooling:
  • If the compressor runs constantly and temperature is too low, the control relay may be stuck.
• 4. Replace sensor if faulty:
  • If the sensor reads extremely low resistance or open circuit, install a new Lanbo cabinet temperature sensor.
• 5. If overcooling continues with a good sensor:
  • The main control board may have a stuck compressor relay and should be replaced.