Through normal use over time, or if you have dropped the device, you may need to reset the sensor. To reset the pressure sensor, use the following procedure:
- Place the handle on a charger that is plugged in to a live outlet
- Hold the Power button, the Up sensitivity button (+), and the Mode button for 2 seconds
- If successful there will be 3 beeps and the green battery light will flash
If this procedure does not achieve the desired result, the handle will need to be replaced. Contact Philips for a replacement handle.