Display shows H1 or HI and interior temperature is very high; unit is not cooling.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety: Unplug the unit before removing panels. Do not attempt to open sealed refrigerant lines.
Immediate actions:
- 1. Check door and gasket: Ensure the door closes fully and the gasket is not torn or warped. Correct any obstructions and clean the gasket.
- 2. Verify power and controls: Confirm the unit is plugged in, the outlet works, and the temperature setting is not in demo or standby mode.
- 3. Listen for compressor and fans: With power on, listen at the back for compressor hum and condenser fan operation. Inside, listen for the evaporator fan.
- 4. Clean condenser: If the condenser coils are clogged with dust, unplug the unit and clean them with a brush and vacuum. Restore power and monitor.
- 5. Check for frost pattern: If accessible, remove the interior rear panel and inspect the evaporator. A partial frost pattern or no frost at all can indicate a sealed system issue.
- 6. Reset alarm: Many LG wine coolers allow you to silence the high-temp alarm by pressing and holding a button (check user manual). If temperature does not drop after several hours, further service is needed.
When to call a technician: If the compressor is running but cooling is poor, or if there is an oily residue on tubing (sign of refrigerant leak), contact a licensed refrigeration technician.