LG Air Conditioner Error Code E446

E446 indicates an operation failure of outdoor Fan1 on your LG air conditioner. The system has detected that the first outdoor fan motor is not functioning correctly and has shut down to protect the unit. The issue can stem from the motor windings, a seized bearing, damaged wiring, or the outdoor control board. A technician should perform resistance testing on the motor phases and insulation to pinpoint the exact cause.

No, you should not continue operating the unit while E446 is active. The outdoor fan is critical for dissipating heat at the condenser, and running the system without proper fan operation causes refrigerant pressure to rise dangerously and can damage or destroy the compressor. The system will typically shut itself down, but attempting to force a restart without resolving the underlying fault risks expensive secondary damage.

Repair costs vary depending on the root cause. Wiring or connector repairs are relatively inexpensive, typically in the range of $75 to $200 including labor. A replacement outdoor fan motor is a more significant expense, generally falling between $150 and $450 for parts plus labor depending on the unit model. Outdoor PCB replacement is usually the most costly option, potentially ranging from $300 to $700 or more. A proper diagnosis is necessary before accurate cost estimates can be given.

Basic checks like clearing debris from the fan blade and inspecting visible wiring connections are within reach for a knowledgeable DIYer. However, properly diagnosing the error requires a multimeter to test phase-to-phase and winding-to-ground resistance on a three-phase motor, which requires some electrical knowledge and safety awareness. Replacing the fan motor or outdoor PCB involves working inside a live outdoor unit and is best handled by a qualified HVAC technician.

A power reset may temporarily clear the error display, but if the underlying fan motor or wiring problem has not been repaired, the code will return as soon as the system attempts to run the outdoor fan again. Resetting without diagnosis is not a fix and delays proper repair. Address the root cause before returning the unit to service.