Refrigerator Sensor Error Online Training Manual for LG Products - Refrigerator Sensor Error      
errs_1
errs_2 Does the display show Er rS?
errs_3 Check CONNECTOR 6 on the main board. Power off the refrigerator. Unplug and reconnect the connector. Check for bent pins and broken wires. Reconnect the connector.

Notice the wires are labeled on the board by the connectors. This makes troubleshooting simpler,
errs_4 Disconnect CONNECTOR 6. Measure the resistance across PIN 9 and PIN 10. (WH and WH wires) The resistance whould be 6 ~ 300 K ohms. If not, replace the refrigerator sensor.

Sensors can be replaced if the servicer is very careful in pulling and cutting the wires, and in making the splices afterwards.

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