Toshiba
Indoor Mechanical Noise / Vibration
Indoor unit makes loud rattling or buzzing 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 front panel or filter, Foreign object in fan wheel, Worn indoor fan motor bearings, Loose mounting plate on wall
How to Fix / Troubleshooting
Safety first: Turn off power before touching the unit or fan.
- Step 1 – Check panels and filters: Ensure the front cover is fully closed and filters are properly seated. Tighten any visible screws.
- Step 2 – Inspect fan wheel: Remove filters and look for foreign objects (plastic, insects) in the cross-flow fan. Remove carefully.
- Step 3 – Check mounting: Gently push the unit against the wall. If noise changes, the mounting plate may be loose. Tighten wall anchors.
- Step 4 – Motor bearings: If a grinding or high-pitched squeal persists, the indoor fan motor bearings are likely worn and the motor assembly should be replaced.
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Repair Difficulty
Medium
3/5
Required Part
Indoor Fan Motor Assembly
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