LG
Outdoor Mechanical Noise / Fan or Compressor Vibration
Outdoor unit is very noisy (grinding, squealing, or loud vibration).
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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.
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Possible Causes
Worn outdoor fan motor bearings, Loose fan blade, Debris contacting fan, Compressor mounting issues or internal wear
How to Fix / Troubleshooting
Safety: Turn off power before opening the outdoor unit. Keep hands clear of fan blades.
Steps:
- Inspect fan area: Remove the top or side panel (as designed) and check for sticks, leaves, or other debris hitting the fan blade.
- Check fan blade: Ensure the blade is tight on the motor shaft and not cracked or bent.
- Tighten panels: Loose sheet metal panels can vibrate. Tighten all accessible screws.
- Observe compressor: With power briefly restored, listen to the compressor. Loud knocking or metallic noises indicate internal damage; turn power off.
Technician required: Fan motor or compressor replacement should be performed by a licensed technician.
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Repair Difficulty
Hard
4/5
Required Part
Outdoor Fan Motor
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