LG HVAC Error Code 62

Error code 62 means the inverter PCB heat sink on the outdoor unit has reached or exceeded 85°C (185°F). The system monitors this temperature with a dedicated thermistor and shuts down to prevent component damage when this threshold is hit. The cause can be restricted airflow, poor board-to-heat-sink contact, a faulty thermistor, or a failed PCB.

No. The unit shuts itself down when error 62 is triggered specifically to protect the inverter components from heat-related damage. Attempting to repeatedly reset and restart the unit without resolving the underlying cause can lead to permanent failure of the inverter PCB or compressor drive circuitry.

Repair costs vary depending on the cause. Cleaning the outdoor unit or applying fresh thermal paste are low-cost services, typically in the range of $75 to $200 for a technician visit. If the thermistor requires replacement the cost is moderate. Replacing the inverter PCB is the most expensive scenario, with parts and labor often ranging from $400 to $900 or more depending on the model.

Some causes are accessible to a knowledgeable DIYer. Clearing debris from the outdoor unit, confirming the condenser fan is spinning, and checking thermistor resistance with a multimeter are reasonable starting points. However, reseating or replacing the inverter PCB and working near high-voltage inverter components should be handled by a qualified HVAC technician.

A power reset may temporarily clear the fault and allow the unit to restart, but the error will return if the root cause is not corrected. If airflow is restricted or the PCB is not making proper contact with the heat sink, the temperature will climb again quickly and the fault will reappear. The underlying issue must be diagnosed and repaired for a lasting fix.