This can occur upon initial use of the product, after a prolonged period of product storage or with a product that has been in use without having fully charged for the recommended 24 hours. Please ensure that the handle is fully charged by making sure the charger is plugged into a live power outlet and placing the AirFloss on the charger for a full 24 hours. When the AirFloss is fully charged the green light will illuminate and go out after 10 minutes. This indicates that the AirFloss is fully charged. If the product continues to display a flashing yellow light after charging for a full 24 hours, contact Philips.
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