Troubleshooting My Philips Sonicare AirFloss does not turn on If your Philips Sonicare AirFloss does not turn on, below you can find a couple of solutions that you can try yourself. Turn the power button on Press the power button to ensure that your Sonicare AirFloss is on. Place it on the charger If your AirFloss still does not turn on, you can try charging the device by plugging the charger into a live outlet and placing your AirFloss on the charger. Charging process: 1 green LED: 33% charged 2 green LEDs: 66% charged 3 green LEDs: 100% charged Note: If you are using your Sonicare AirFloss for the first time, ensure that it has been charged for 24 hours. Note: When the charge indicators flash yellow, the battery is low and needs to be recharged (fewer than 3 uses left). Still does not turn on or have questions? Contact our Consumer Care Agents for further assistance or visit our support page.