LG Refrigerator Er FS code: Freezer temperature sensor error
The sensor that reads the freezer's temperature is giving bad readings, so the refrigerator cannot control freezer temperature properly.
Most common causes
- Failed freezer thermistor
- Loose or damaged sensor wiring
- Control board fault
What you can safely check yourself
- Unplug the refrigerator for about 5 minutes, then plug it back in
Unplug the appliance before moving or cleaning anything. Do not open panels, touch gas connections or bypass safety switches.
Checked against: lg.com. Meanings can vary by model; check your owner’s manual.