LG Refrigerator Er rS code: Refrigerator temperature sensor error
The sensor that reads the fresh-food section's temperature is faulty, so fridge temperature control is unreliable.
Most common causes
- Failed refrigerator 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.