Daikin
Mechanical Noise / Vibration Issue
Daikin air conditioner makes loud rattling, buzzing, or grinding noises during operation
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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
Loose indoor or outdoor fan blade, Foreign object in fan, Loose mounting bolts on outdoor unit, Worn fan motor bearings
How to Fix / Troubleshooting
Safety first: Turn off power immediately if you hear grinding or metallic scraping to prevent further damage.
User steps:
- Check that the indoor unit front panel is properly latched and not vibrating.
- Inspect the outdoor unit for loose panels; tighten accessible screws.
- Look through the grille to see if any debris is contacting the fan blade; remove it with power off.
Technician tasks:
- Check fan blades for cracks or imbalance and replace if damaged.
- Re-level and secure the outdoor unit on its base or brackets.
- Replace noisy fan motors with worn bearings.
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Repair Difficulty
Medium
3/5
Required Part
Indoor or Outdoor Fan Motor / Fan Blade
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