LG Air Conditioner Error Code 67

Error code 67 indicates an outdoor unit fan lock fault. The system detected that the outdoor fan motor was spinning at 10 RPM or less for 5 seconds during startup, or dropped to 40 RPM or less after startup. This protection shuts the unit down to prevent overheating and compressor damage. Inspection of the outdoor fan motor assembly and blade is the recommended first step.

Resetting the unit by cycling power may temporarily clear the fault display, but if the underlying cause is not resolved, the error will return quickly once the fan fails to reach proper speed again. A reset is useful for confirming the fault is persistent, but it is not a fix. The fan motor assembly and any associated components must be inspected and repaired before the unit will operate reliably.

Repair costs depend on the failed component. Clearing a debris obstruction may cost nothing beyond a service call fee, typically in the range of $75 to $150. Replacing a capacitor usually runs $100 to $250 including parts and labor. Fan motor replacement can range from $250 to $600 or more depending on the model and motor type. Control board replacement tends to be the most expensive option, often falling between $400 and $900.

If the cause is a physical obstruction like leaves or debris jamming the fan blade, clearing the blockage yourself (with the unit powered off) may resolve the fault. However, if the issue involves the fan motor, capacitor, or control board, those repairs require electrical testing and component replacement that most homeowners should leave to a qualified technician. Always disconnect power before inspecting the outdoor unit.

No, the unit should not be forced to run while this fault is active. Without adequate outdoor fan operation, the condenser cannot shed heat properly, causing refrigerant pressure to rise to dangerous levels. Continued operation under this condition risks compressor failure, which is a significantly more expensive repair than addressing the fan system.