Safety: Unplug the unit before removing the rear panel.

Clean fan and area: Remove dust and debris from the condenser fan and surrounding area with a brush and vacuum.
Check blade clearance: Ensure the fan blades do not contact the shroud, wiring, or tubing. Reposition wires and adjust shroud if necessary.
Tighten mounts: Tighten screws or clips securing the fan motor and bracket.
Replace fan motor: If the motor still makes grinding or squealing noises, replace the condenser fan motor assembly.

Condenser fan at the back is noisy, grinding, or rattling.

Possible Causes