Levoit
Fan Bearing Wear / Ultrasonic Frequency Noise
Humidifier emits a high‑pitched whine or squeal.
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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
Worn fan motor bearings, Fan shaft misalignment, Ultrasonic transducer operating at audible harmonic due to damage, Loose fan mounting bracket
How to Fix / Troubleshooting
Safety: Unplug before working on the unit.
Steps:
- Isolate source: Briefly run the unit with the cover off (keeping water away from electronics) to determine if the noise comes from the fan or the transducer area.
- Fan noise: If the fan is the source, clean the blades and check for wobble. If the squeal persists, replace the fan motor assembly.
- Transducer noise: If the sound is from the transducer, inspect for cracks or heavy scaling. Clean with vinegar as described in other steps. If noise continues, replace the transducer assembly.
- Secure mounts: Tighten any loose brackets or screws around the noisy component.
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Repair Difficulty
Medium
3/5
Required Part
DC Fan Motor Assembly
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