LG Dryer Error Code HC

The HC code on an LG dryer means the control board has detected an invalid heating temperature during operation. The dryer monitors drum temperature continuously through a thermistor, and this code appears when the temperature reading is outside the expected range for the running cycle. The most common causes are a faulty thermistor or a problem with the PCB. The dryer will typically stop the cycle to prevent damage.

It is not recommended to continue using the dryer while the HC code is active. The code indicates a temperature monitoring fault, which means the dryer may not be able to regulate heat correctly. Running the dryer in this state could result in overheating, potential damage to fabrics, or a fire risk if airflow is restricted.

A reset by unplugging the dryer for a few minutes may temporarily clear the HC code, but the fault will return if the underlying cause has not been addressed. If the thermistor is defective or the wiring is damaged, the code will reappear once the dryer attempts to run a heated cycle again. A reset is useful for confirming whether the fault is intermittent, but it is not a permanent fix.

Some of the causes are DIY-friendly, such as clearing a blocked lint filter or exhaust duct and inspecting the thermistor wiring for loose connectors. Testing the thermistor with a multimeter requires basic electrical knowledge but is within reach for experienced DIYers. PCB replacement is more involved and may be better suited for a qualified technician if you are not comfortable working with control boards.

Repair costs depend on the failed component. A replacement thermistor is generally an inexpensive part, with the total repair including labor typically ranging from $75 to $175. PCB replacement is more costly, often ranging from $200 to $400 or more depending on labor rates and part availability. Clearing a blocked vent requires no parts and costs nothing if done yourself.