Mitsubishi Electric
Fan Wheel Damage or Bearing Failure
Loud grinding or scraping noise from fan area; airflow reduced.
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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
Broken or warped fan wheel, foreign object in fan housing, worn fan motor bearings, misaligned fan shaft
How to Fix / Troubleshooting
Safety: Unplug the unit. Do not insert fingers into the fan area.
Steps:
- Remove obstruction: Take off the front panel and filter. Inspect the fan housing for debris (plastic, paper, insects) and remove carefully.
- Check fan wheel: Spin the wheel by hand. If it wobbles or rubs against the housing, it may be cracked or deformed and should be replaced.
- Motor bearings: If you hear grinding when spinning by hand, the motor bearings are worn. Replace the indoor fan motor.
- Reassembly: Ensure the fan wheel is centered and clear of the housing before powering on.
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Repair Difficulty
Medium
3/5
Required Part
Fan Wheel / Indoor Fan Motor
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