My Philips Sonicare AirFloss makes a whistling sound
Clean the reservoir vent
To clean the reservoir vent, follow the steps below:
1. Take a damp/moist paper tower or cotton swab
2. Wipe along the inside edge of the reservoir door opening, especially on the top area
3. Rinse well with cold tap water and ensure that there are no debris/dust left
Note: Ensure that there is no debris from the paper tower or cotton bud inside the reservoir area.
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