LG Air Conditioner Error Code 106

Error code 106 indicates that the Intelligent Power Module on the outdoor unit fan PCB has activated its protection circuit due to detected overcurrent or overheating. The IPM drives the outdoor fan motor through three phase terminals and shuts down when current or temperature exceeds safe limits. This stops the outdoor fan from operating and prevents further damage to the board. A technician will need to inspect the fan motor, its wiring, and the fan PCB heatsink to identify the root cause.

No, you should not attempt to continue operating the unit when error code 106 is active. The system has shut down the outdoor fan to protect the electronics from overcurrent or overheating damage. Running the compressor without proper fan operation can lead to high-pressure faults, refrigerant system damage, or further electrical component failure.

Repair costs depend on the failed component. If only a connector needs reseating or cleaning, the cost is primarily a service call fee, typically in the range of $75 to $150. Fan motor replacement generally runs $200 to $450 including parts and labor, while a fan PCB replacement can range from $250 to $600 or more depending on the unit model. Getting a diagnostic visit to confirm the specific failed component before committing to parts is always recommended.

Some basic checks are within reach of a knowledgeable DIYer, such as visually inspecting the outdoor fan blade for obstructions and verifying that all wiring connectors are fully seated. However, safely working inside the outdoor unit involves exposure to high-voltage components, and properly diagnosing IPM or motor faults requires electrical testing equipment. If basic external checks do not reveal the problem, a qualified technician should perform the detailed diagnostics.

A reset may temporarily clear the fault and allow the unit to restart, but if the underlying cause, such as a binding fan motor, bad connector, or overheating heatsink, has not been corrected, the error will return quickly. Repeated resets without addressing the root cause can lead to additional damage to the fan PCB or motor. The fault should be diagnosed and repaired before returning the unit to normal operation.