TCL
Excessive Noise / Mechanical Vibration
Dehumidifier is running but makes loud rattling, buzzing, or grinding noises.
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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 blade or blower wheel, Worn fan motor bearings, Loose compressor mounting, Cabinet panels vibrating
How to Fix / Troubleshooting
Safety: Unplug the unit before touching internal parts. Keep fingers away from fan blades.
- Identify noise source: Run the unit briefly with the cover on and listen to locate the general area of the noise (top fan, bottom compressor, or cabinet).
- Check fan assembly: Remove the front cover and inspect the fan blade or blower wheel. Tighten the set screw or clip if loose. Remove any foreign objects.
- Inspect motor: Spin the fan by hand. If it feels rough or wobbly, replace the fan motor assembly.
- Compressor mounts: Check rubber grommets under the compressor. Replace if cracked or missing. Ensure mounting bolts are snug but not overtightened.
- Cabinet vibration: Tighten all accessible screws on the cabinet and panels. Add thin foam tape between rattling panels if needed.
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Repair Difficulty
Medium
3/5
Required Part
Fan Motor Assembly
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