Safety: Unplug the unit before servicing the fan.

Steps:

Access fan: Remove the rear panel to expose the condenser fan assembly.
Clean fan: Remove dust from the fan blades and motor housing with a soft brush and vacuum.
Check for rubbing: Spin the fan by hand and listen for scraping. Adjust the fan blade position so it does not contact the shroud.
Replace motor: If squealing persists or the motor feels rough when spun by hand, replace the condenser fan motor with a SMAD-compatible part.

High-pitched squealing or chirping noise while the fan is running.

Possible Causes