LG Air Conditioner Error Code E385

E385 indicates an input current error detected at the second inverter (Inverter 2) in the system. The unit has measured current outside of acceptable limits at this board and shut down to protect components. The fault points to either a wiring or connection problem at the inverter board or a failure of the Inverter 2 PCB itself.

No. E385 indicates an active electrical fault in the inverter circuit, and the unit will typically refuse to operate normally when this code is present. Attempting to force the unit to run with a known inverter current fault risks causing additional damage to the PCB or compressor. The system should remain off until the fault is diagnosed and corrected.

Repair costs depend on the root cause. If only a wiring connection needs to be reseated or a terminal cleaned, labor costs may range from roughly $75 to $200. If the Inverter 2 PCB requires replacement, the total cost including parts and labor typically falls in the range of $300 to $700 or more, depending on the specific model and local labor rates.

The initial step of powering the unit off and checking for obvious loose connections is something a knowledgeable DIYer can attempt. However, diagnosing and replacing the Inverter 2 PCB requires working inside the outdoor unit with high-voltage components, which carries serious safety risks. This repair is best handled by a licensed HVAC technician.

A full power-off reset may clear E385 if the fault was caused by a one-time electrical transient. However, if the error returns after the reset, a physical problem such as a loose connection or failed Inverter 2 PCB is present and must be repaired. Repeatedly resetting without addressing the underlying cause will not resolve a hardware fault.