LG · Freezer / Ice Maker
Er CO Pro Recommended LG Freezer Er CO — Communication Error
The control panel stops responding and the temperature settings can no longer be changed.
What does LG Er CO mean?
The main control board and the display board have lost communication. On LG bottom-freezer and French-door models, this can cause the freezer and fridge to stop responding to controls.
What causes LG Er CO?
- Loose or damaged ribbon cable between the control board and display
- Power surge or brownout affecting board communication
- Failed main control board
How to fix LG Er CO yourself
- 1 Unplug the refrigerator for 5 minutes, then plug back in — power cycles often clear Er CO caused by transient surges.
- 2 Check that the unit is plugged directly into a wall outlet, not a power strip or extension cord.