LG Refrigerator Error Code Er RS — What It Means & How to Fix It

What Does This Error Mean?

The Er RS error means the temperature sensor in your LG refrigerator's fresh food compartment has a problem. This sensor monitors how cold the fridge section is — where you keep milk, leftovers, and produce. When it fails, the fridge may not cool properly and food safety is at risk. This error should be fixed as soon as possible.

Affected Models

LRMVS3006S
LRFXS2503S
LRMDC2306S
LFXS26973S
Most LG French door refrigerators

Common Causes

Faulty refrigerator compartment sensor that has failed or gone out of range
Frost or ice buildup near the sensor in the fridge section
Loose wiring connection between the sensor and the main control board
Refrigerator door left open frequently — allowing warm air in and disrupting sensor readings
Control board malfunction misreading the signal from the fridge sensor

How to Fix It

Check the actual temperature inside the fridge with a separate food thermometer.

Safe refrigerator temperature is 34°F–40°F (1°C–4°C). If the temp is above 40°F, food safety is at risk. Move perishables to a cooler immediately.
Unplug the refrigerator for 10 minutes and plug it back in.

A full power reset can clear a temporary Er RS reading caused by a momentary sensor glitch.
Make sure the refrigerator door seals are clean and the doors close completely.

Damaged or dirty door gaskets let warm, humid air in — which can cause frost and affect sensor readings. Wipe the gaskets with a damp cloth.
Check if there is frost buildup on the back wall inside the fridge compartment.

Frost inside the fresh food section is unusual and indicates a defrost system issue. This can also affect sensor readings.
If Er RS returns after the reset and the fridge is not cooling, stop storing food in it.

Call a technician. Do not continue relying on a fridge that is not cooling correctly — food poisoning risk is real.

When to Call a Professional

If a power reset does not clear Er RS and the fridge temperature is rising, call a technician quickly. Food in the refrigerator compartment spoils faster than frozen food. Contact LG support at 1-800-243-0000 or a local appliance repair service. Expect repair costs of $120–$250 for a refrigerator sensor replacement.

Frequently Asked Questions

How is Er RS different from Er FS on an LG refrigerator?

Er FS is about the freezer compartment sensor. Er RS is about the fresh food (refrigerator) compartment sensor. They are separate sensors in different parts of the fridge. Both need attention quickly — but Er RS directly affects the food you eat daily.

Can I keep using my LG fridge with the Er RS error?

Only for a short time — and with caution. Use a separate thermometer to verify the fridge stays below 40°F. If it is cooling normally and the thermometer confirms safe temp, you have time to schedule a repair. If the temperature is rising, remove perishable food immediately.

Does LG cover the Er RS sensor repair under warranty?

LG provides a 1-year parts and labor warranty on most refrigerators. Some components like the sealed system (compressor) have a longer warranty. Call LG support at 1-800-243-0000 with your model number and purchase date. If still under warranty, the sensor repair should be at no cost to you.