Error code · Refrigerator

Kenmore 795 Refrigerator Code Er CO: Boards not talking

Medium · inspection needed

Code: Er CO (795 / LG-built)
Appliance: Refrigerator
Brand: Kenmore
Warranty: 30-day workmanship

What Er CO (795 / LG-built) means

Er CO appears on Kenmore 795. refrigerators, which LG built, when the main board and the display board lose communication. The main board runs the cooling, and the display board shows temperatures and takes your button presses. When they stop exchanging data, the display may go blank, the buttons may do nothing, or the refrigerator may keep running on whatever settings it last had.

Common causes of Er CO (795 / LG-built)

Wiring between the main board and the display board
Display board
Main board
A brief power interruption

✓ One safe check you can try

1. Confirm the plug is fully seated and the outlet has power. 2. Press a control button and see whether the display answers. 3. Disconnect the refrigerator from power for a few minutes, then reconnect it. 4. Check that the compartments are still cold. 5. If Er CO returns, call us with the exact display.

! Why to stop there

The code names the link, not which end of it has the problem
We check the wiring and connectors before either board
We quote in writing before any board is replaced

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Refrigerator codes

OP in Freezer DisplayKenmore 253 French-Door Refrigerator Code OP in Freezer Display: Open Freezer Sensor OP in Refrigerator DisplayKenmore 253 French-Door Refrigerator Showing OP in the Refrigerator Display (Open Fresh-Food Sensor) r1 Lo / r1 HiKenmore 111 Bottom-Freezer Refrigerator Code r1 Lo / r1 Hi: Fresh-Food Sensor rt Lo / rt HiKenmore 111 Bottom-Freezer Refrigerator Code rt Lo / rt Hi: Room Temperature Sensor SH in Freezer DisplayKenmore 253 French-Door Refrigerator Showing SH in the Freezer Display: Shorted Sensor SH in Refrigerator DisplayKenmore 253 French-Door Refrigerator Code SH in Refrigerator Display: Shorted Fresh-Food Sensor SY CE / SY CFKenmore 253 French-Door Refrigerator Code SY CE / SY CF: Control and Display Communication SY EFKenmore 253 French-Door Refrigerator Code SY EF: Evaporator Fan Circuit

Er CO (795 / LG-built)Er CO (795 / LG-built) questions

Is the refrigerator still cooling?

Often it keeps cooling on its last settings, but you cannot adjust them reliably. Check temperatures with a thermometer if Er CO stays on for more than a day.

Could power surges cause this?

A surge can upset the boards, and a reset may clear a one-time event. If it comes back after a reset, there is a lasting problem with a board or its wiring.

Do you replace the display board first?

No. We check the wiring and connectors between the boards before touching either one. That order avoids replacing a good board. A written price comes first, and our workmanship carries a 30-day warranty.

Book a visit

Still seeing Er CO (795 / LG-built)?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 955-7152