LG error code CF: The condenser fan motor (located at the bottom rear, near the compressor) is not running correctly. This causes the compressor to overheat and reduces cooling efficiency.
The condenser fan motor (located at the bottom rear, near the compressor) is not running correctly. This causes the compressor to overheat and reduces cooling efficiency.
Unplug the refrigerator. Remove the rear access panel (or lower grille on bottom-mount models). Use a vacuum and stiff brush to remove dust, lint, and pet hair from the condenser coils and fan blade. Wrapped hair around the motor shaft is the leading cause of CF. Do this annually.
Tools needed: Vacuum cleaner with brush attachment, Stiff brush
Unplug the refrigerator. Remove all food to coolers. Leave the freezer door propped open for 24–48 hours. Heavy frost buildup around the fan is the number one cause of this error — ice physically blocks the fan blades.
Tools needed: Towels
Once the freezer is fully defrosted, plug the refrigerator back in and open the freezer. Listen for the fan to start within 2–3 minutes. If it hums but doesn't spin, there may still be ice around the motor shaft or a mechanical jam.
Disconnect power. Remove the freezer contents and the rear panel inside the freezer (typically held by 4–6 screws). The evaporator fan motor is located behind this panel. Check that the fan blade spins freely by hand.
Tools needed: Screwdriver set, Nut driver
Disconnect the motor's wiring connector. Test the motor windings for continuity with a multimeter. If the motor reads open (infinite Ω) or significantly out of spec, the motor is burned out and needs replacement.
Tools needed: Multimeter
If the fan motor tests good but still doesn't run, the relay on the main control board that powers the fan may have failed. This requires checking voltage output at the motor connector when the compressor is running.
Tools needed: Multimeter