Samsung Air Conditioner Error Code E493

E493 indicates an output current sensor error for Fan1 on a Samsung air conditioner. The Fan PCB monitors the current output to the primary fan motor and has detected a value outside the acceptable range. The system shuts down to prevent component damage. A technician will need to diagnose and likely replace the Fan PCB to resolve the fault.

No, you should not continue operating the unit when E493 is active. The system has detected an abnormal current condition in the fan circuit, and running the unit in this state risks further damage to the fan motor, PCB, or related components. Leave the unit off until the fault has been properly diagnosed and repaired.

Repair costs for E493 vary depending on the specific fault found. Fan PCB replacement parts typically range from $80 to $250 or more depending on the model, plus labor costs that can range from $100 to $300 depending on your location and the technician's rates. If the fan motor itself has also failed, total repair costs will be higher.

The primary fix for E493 is replacing the Fan PCB, which involves working with electrical components inside the unit. A knowledgeable DIYer can inspect the wiring harness and connectors for obvious damage as a first step. However, PCB replacement and motor diagnostics are best handled by a qualified technician, especially since the unit should be fully powered down before any internal inspection.

A power reset may temporarily clear the error code, but if the underlying fault in the Fan PCB, wiring, or motor still exists, the code will return once the unit attempts to operate. Resetting is not a repair and should only be used as a temporary diagnostic step, not a solution.