Sharp
Outdoor Mechanical Noise / Compressor or Fan Issue
Loud humming, buzzing, or knocking noise from outdoor unit.
Advertisements
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.
Advertisements
Possible Causes
Loose outdoor fan blades or grille, Debris in fan, Vibrating refrigerant pipes touching chassis, Failing compressor with internal mechanical noise
How to Fix / Troubleshooting
Safety first: Turn off the outdoor unit breaker before removing any panels.
- Inspect fan and grille: Tighten fan blade nut and grille screws. Remove any debris contacting the fan.
- Secure piping: Check that refrigerant pipes are not touching the metal chassis. Use foam insulation or clips to prevent vibration contact.
- Compressor noise: If the noise is from the compressor shell and is very loud or knocking, the compressor may be failing. This requires professional replacement.
- Anti-vibration pads: Install rubber pads under the outdoor unit feet to reduce transmitted vibration.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Outdoor Fan Assembly / Compressor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements