LG Refrigerator Error Code Error10

Error10 means the refrigerator has detected an abnormal condition in the water tank sensor circuit, specifically a short circuit or an open circuit. The water tank sensor is a thermistor that monitors the temperature of the internal water supply used by the dispenser. When the control board cannot read a valid signal from this sensor, it displays Error10 to alert you to the fault. The issue can originate from the sensor itself, the wiring, or the connector.

The refrigerator's primary cooling functions will generally continue to operate even with Error10 active, so food safety is not immediately at risk in most cases. However, the water dispenser may not function properly since the water tank sensor is directly involved in that system. It is best to address the fault promptly to avoid potential issues with dispenser operation or further component stress.

Repair costs vary depending on the root cause. If only the water tank sensor needs replacement, parts typically range from around 20 to 60 dollars, with additional labor costs if a technician performs the work. If the wiring harness or control board is involved, total repair costs could range from 150 to 400 dollars or more depending on parts and local labor rates. Diagnosing the fault accurately before ordering parts can help avoid unnecessary expenses.

Start by entering the display check mode, accessed by pressing the FREEZER and ICEPLUS buttons simultaneously for more than one second, to confirm the sensor status. Next, inspect the water tank sensor connector and wiring harness for any loose, corroded, or damaged connections. If the wiring appears intact, use a multimeter to test the thermistor resistance and compare it against the expected range. If the sensor reads open or shorted, replacing the water tank sensor is the most likely fix.

A power reset may temporarily clear the error code from the display, but it will return if the underlying sensor fault is still present. Error10 is triggered by an active electrical fault in the sensor circuit, meaning the control board will detect the problem again as soon as it checks the sensor. A permanent fix requires diagnosing and correcting the root cause, whether that is a failed sensor, damaged wiring, or a faulty connector.