LG Washer Error Code 1HC1

The 1HC1 code on an LG washer indicates a heater error in the upper washer unit. Specifically, it means the water level sensor is detecting no water while the temperature sensor is reading between 100°C and 150°C, which signals a dangerous dry-run overheating condition. This fault should be addressed promptly to avoid damage to the heater and surrounding components.

No, it is not safe to continue using the washer while the 1HC1 code is active. This code indicates the heater may be operating without water present, which can cause extreme overheating and damage to the heating element and nearby components. Stop using the machine until the fault has been properly diagnosed and repaired.

A reset may temporarily clear the 1HC1 code from the display, but the code will return if the underlying fault has not been corrected. Because this error involves a potentially unsafe heating condition, simply resetting the machine without addressing the root cause is not recommended. The heater wiring, water level sensor, and temperature sensor should all be inspected and tested before resuming normal use.

Start by checking the wire connections between the wiring harness and the heater element, as a loose or corroded connection is the most common cause. If the wiring is intact, test the water level sensor and temperature sensor for proper operation. Depending on which component has failed, you may need to replace one or more parts before the error will clear.

Repair costs vary depending on which component has failed. Replacing a water level sensor or temperature sensor typically falls in the range of $50 to $150 including parts and labor. If the heating element itself needs replacement, costs can range from $100 to $250 or more. A control board replacement would be at the higher end of the repair cost spectrum.