LG Refrigerator er-rs error code
The refrigerator compartment temperature sensor is faulty. It is shorted or disconnected, so the fridge cannot read the fresh-food section temperature.
Also shown as: er-rs, ER-RS, Er rS, er rs
Last updated: October 6, 2026
What causes the er-rs error?
- Fridge sensor shorted or disconnected
- Damaged sensor wiring
- Corroded connector
- Sensor drifted out of specification
- Failed main control board
How to fix LG er-rs — step by step
Work through these in order, from simplest and safest first. Stop as soon as the code clears.
- Power reset the fridge
Unplug the fridge for 10 minutes, then plug it back in. Temporary sensor errors sometimes clear. - Check around the sensor cover
Make sure food packages are not pressed hard against the sensor cover on the fridge wall. Poor airflow around it causes false readings. - Do a manual defrost
Unplug the fridge and leave the doors open for 8 to 12 hours if ice has built up. Ice around the sensor distorts its readings.Safety warning: Never chip ice off with a sharp tool.
When to call a technician
- The code returns after a power reset
- Food is freezing in the fridge section
- The fridge section stays too warm
- Temperature swings wildly up and down
Frequently asked questions
Why is food freezing in my fridge with Er rS?
The fridge cannot read the temperature, so it keeps cooling blindly and overshoots into freezing.
Why is my fridge warm with Er rS?
The opposite failure. The fridge thinks it is colder than it is and does not cool enough.
Where is the fridge sensor?
Usually behind a small cover on the back wall of the fresh-food section. You do not need to open it for basic troubleshooting.
Sources
Every meaning and fix above was checked against official manufacturer documentation:
FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.