Loud humming or grinding noise from the outdoor unit; fan may be slow or not start.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety first: Turn off power at the outdoor disconnect before inspection.
Steps:
- Inspect fan blade: Check the outdoor fan blade for damage or contact with the shroud. Straighten minor bends carefully.
- Check for debris: Remove sticks, leaves, or ice from around the fan.
- Spin test: With power OFF, spin the fan blade by hand. Roughness or noise indicates bad bearings.
Repair: Replace the outdoor fan motor and/or fan blade if noisy. If the noise clearly comes from the compressor shell, a technician should evaluate the compressor.
Repair Difficulty
Required Part
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