LG Air Conditioner Error Code E493

E493 indicates an output current sensor error on the outdoor Fan1 PCB of your LG air conditioner. The system has detected that the current signal from the fan motor drive circuit is outside the acceptable range. This causes the unit to stop the outdoor fan to prevent potential damage. A technician should inspect the outdoor unit's power supply, wiring, and the Fan1 PCB.

No, you should not continue running the unit while E493 is active. The outdoor fan is likely not operating correctly, which means the condenser coil cannot release heat properly. Running the system in this state can cause the compressor to overheat and fail, leading to a much more costly repair.

A power reset may temporarily clear the error code, but if the underlying fault in the Fan1 PCB or its wiring remains, the code will return once the system attempts to run the outdoor fan again. Resetting without repairing the cause is not a solution and may allow the system to operate in a condition that could damage other components.

Basic checks such as verifying the power connection and inspecting visible wiring at the outdoor unit can be performed by a knowledgeable homeowner. However, testing the PCB's current sensing circuit and replacing the Fan1 PCB require electrical knowledge and safe handling of high-voltage components. Most repairs for this error are best handled by a qualified technician.

If only the wiring or connectors need attention, the repair cost is relatively low, typically in the range of $75 to $150 for a service call. If the outdoor Fan1 PCB requires replacement, parts and labor combined can range from $200 to $600 or more depending on the unit model and local labor rates. Getting a diagnostic assessment first will clarify what components are actually at fault.