What Er CO (795 / LG-built) Means
Er CO on a 795-prefix LG-built Kenmore refrigerator reports a communication error between the main power control board and the display board. The published candidates are the display board, the power control board and the harness between them.
Common Causes of Er CO (795 / LG-built)
- A harness between display and power control board unseated
- A failed display control board
- A failed power control board
🔧 One Safe Check You Can Try
Unplug the refrigerator for five minutes and restore power; a communication fault that reappears immediately is a wiring or board question.
⚠ Why You Shouldn't Go Further Than That
- Both boards are live whenever the appliance is plugged in, and the display harness on this design runs through a door hinge.
- A hinge harness that has been flexed for years is fragile, and disturbing it carelessly finishes it off.
- Guessing between two boards when either could be at fault is an even chance at an uneven cost.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.