Hitachi
Outdoor Fan or Compressor Mechanical Failure
Outdoor unit makes loud grinding or squealing noise
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
Worn outdoor fan motor bearings, Fan blade hitting shroud, Loose compressor mounting bolts, Failing compressor
How to Fix / Troubleshooting
Safety first: Turn OFF the breaker before inspecting the outdoor unit.
Steps:
- Inspect fan blade: Check for bent blades or contact with the fan guard or shroud. Straighten minor bends carefully or replace the blade.
- Check for debris: Remove any sticks, stones, or plastic lodged near the fan.
- Compressor noise: If the noise clearly comes from the compressor body and persists, shut down the unit and call a technician; internal compressor damage is likely.
Do not: Operate the unit for long periods with loud mechanical noises; this can cause further damage.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Outdoor Fan Motor / Fan Blade / Compressor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements