Sencor
Excessive Operational Noise
Indoor unit 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 fan wheel or mounting screws, Foreign objects in fan housing, Worn fan motor bearings, Vibrating panels
How to Fix / Troubleshooting
Safety first: Unplug the unit before removing covers. Moving fan blades can cause injury.
- Step 1 – Check for debris: Remove the front cover and inspect the blower wheel and fan housing for foreign objects (plastic, paper, insects). Remove carefully.
- Step 2 – Tighten screws: Tighten mounting screws on the fan motor, blower housing, and front panel.
- Step 3 – Inspect fan wheel: Ensure the blower wheel is centered and not rubbing against the housing. Adjust position if necessary.
- Step 4 – Test motor bearings: Spin the fan by hand; roughness or grinding indicates worn bearings. Replace the indoor fan motor.
- Step 5 – Add padding: Use foam tape on rattling plastic panels where they contact the chassis.
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Repair Difficulty
Medium
3/5
Required Part
Indoor Fan Motor
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