LG Air Conditioner Error Code E353

E353 indicates that the second fan motor on the outdoor unit has overheated and triggered a thermal protection fault. The system shuts down to prevent damage to the motor and other components. The fault points specifically to Fan2 in the outdoor unit, which is responsible for moving air across the condenser coil. Diagnosis starts with checking the motor's wiring connections and then inspecting the motor itself for physical signs of damage.

No, you should not continue operating the unit while E353 is active. The error indicates the Fan2 motor is overheating, and running the system without proper condenser airflow can lead to high discharge pressures, compressor overloading, and potentially irreversible damage to expensive components. Keep the unit off until the fault is diagnosed and resolved.

Repair costs depend on the root cause. A run capacitor replacement is typically on the lower end, often ranging from $75 to $200 including labor. A full fan motor replacement can range from $200 to $600 or more depending on the unit and labor rates in your area. Wiring repairs are generally less expensive, while cases involving additional component damage from prolonged overheating will increase the total cost.

Some causes of E353 are DIY-friendly, such as clearing debris from around the outdoor unit or reseating a loose wiring connector. However, replacing a fan motor, capacitor, or diagnosing winding failures requires working inside the outdoor unit with electrical components and is best handled by a qualified technician. Always disconnect power to the unit before inspecting any wiring or components.

A power reset may temporarily clear the error and allow the unit to restart, but if the underlying cause of the motor overheating is not corrected, the fault will return. Repeatedly resetting without addressing the root cause risks further damage to the fan motor or other outdoor unit components. The error should be fully diagnosed before resuming normal operation.