LG Refrigerator Error Code ER PC — What It Means & How to Fix It

What Does This Error Mean?

The ER PC error means your LG refrigerator's control panel is not communicating properly with the main board. The display panel has lost its connection or is sending garbled data. Settings, dispenser controls, and the ice maker may not respond while this error is active.

Affected Models

LRMVS3006S
LRFVS3006S
LMXS30796S
LFXS26973S
LG French door and side-by-side refrigerators with digital panels

Common Causes

Loose ribbon cable or wiring harness connector between the display panel and main board
Power surge disrupting the panel-to-board communication signal
Failed or damaged display panel control board
Condensation inside the door panel causing a short in the ribbon cable
Main control board fault affecting its ability to receive panel inputs

How to Fix It

Unplug the refrigerator for 5 minutes and plug back in.

This is the single most effective first step for ER PC. Power surges and brief communication glitches often clear with a hard reset.
Check if the refrigerator is cooling and the ice maker is working.

If the fridge and freezer temperatures are normal, the error is isolated to the panel — not the cooling system. This reduces urgency.
Try pressing buttons on the panel after the reset.

If the panel responds normally and ER PC does not return, a temporary communication glitch caused the error. Monitor for recurrence.
Check for moisture around the door panel.

If the fridge is in a humid area or the door seal is damaged, condensation can get into the panel. Wipe the door frame and panel edges dry.
If ER PC returns repeatedly, schedule a technician.

The technician will check the ribbon cable connection inside the door and test the panel board. Provide your model number and the ER PC code.

When to Call a Professional

If a reset does not clear ER PC, the display panel board or its connecting cable needs professional inspection. These components are inside the refrigerator door, which requires careful disassembly. Expect costs of $150–$350 depending on the part needed.

Frequently Asked Questions

Will the ER PC error cause food to spoil?

Not directly — ER PC is a communication error with the control panel, not the cooling system. In most cases, the compressor and fans continue to run and keep food cold. However, if you cannot adjust temperature settings, monitor an appliance thermometer to confirm the fridge stays below 40°F (4°C).

Can I fix ER PC myself?

The reset step is safe and easy to do yourself. Beyond that, accessing the ribbon cable inside the refrigerator door requires careful disassembly to avoid breaking the door liner or panel connections. For most people, this is a job for a technician.

How much does an LG refrigerator display panel replacement cost?

Display panel boards for LG refrigerators cost $60–$180 for the part. With technician labor, the total repair cost is typically $150–$350. Check your warranty first — LG covers parts and labor for 1 year from purchase date. Call 1-800-243-0000 to verify coverage.