HomeBrandsLGRefrigeratorser rs
er rs
Moderate
LG · Refrigerators
Run-Time Sensor Error (Refrigerator Section)
Quick Answer
Error code Er rS on your LG Refrigerators means: Run-Time Sensor Error (Refrigerator Section). This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
LRDCS2603SLRFXS2503SLRMVC2306SLRMVS3006SLRSOS2706SLRSXS2706VLTCS20020S
Likely Causes
  1. Refrigerator section temperature sensor is reading out of range
  2. Sensor wiring has an open or short circuit
  3. Sensor connector is corroded or loose at the control board
  4. Sensor has drifted out of calibration over time
How to Fix It
1
Unplug the refrigerator and locate the refrigerator section thermistor, typically clipped to the evaporator or mounted on the interior wall
2
Disconnect the thermistor and measure its resistance with a multimeter; at 37 degrees Fahrenheit it should read approximately 16,000 to 17,000 ohms
3
Check the wiring from the sensor to the main control board for breaks or shorts
4
Inspect the connector at the main control board for corrosion
5
Replace the thermistor sensor if resistance readings are out of the expected range
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Refrigerator thermistor sensor (LG part #6323JA2002K)
Wire harness connector
Related Error Codes
Er IFEr FFEr CFEr COEr dH
Video Guides
Loading video guides…
Search more on YouTube →