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Troubleshooting
If Model FB511 isn't working properly, see our troubleshooting steps below. Visit help.fitbit.com for
more information.
Heart-rate signal missing
Model FB511 continuously tracks your heart rate while you're exercising and throughout the day. If
the heart-rate sensor on your watch has difficulty detecting a signal, dashed lines appear.
If your device doesn't detect a heart-rate signal, first make sure heart-rate tracking is turned on in
the Settings app on your device. Next, make sure you're wearing your watch correctly, either by
moving it higher or lower on your wrist or by tightening or loosening the wristband. Model FB511
should be in contact with your skin. After holding your arm still and straight for a short time, you
should see your heart rate again.
For more information, see help.fitbit.com.
GPS signal missing
Environmental factors, including tall buildings, dense forest, steep hills, and even thick cloud cover,
can interfere with your phone's ability to connect to GPS satellites. If your phone is searching for a
GPS signal during an exercise, "GPS connecting" appears at the top of the screen.
For best results, wait for your phone to find the signal before you start your workout.
Can't connect to Wi-Fi
If Model FB511 can't connect to Wi-Fi, you might have entered an incorrect password, or the
password might have changed:
1. From the Today tab
FB511 tile.
2. Tap Wi-Fi Settings > Next.
3. Tap the network you want to use > Remove.
4. Tap Add Network and follow the on-screen instructions to reconnect the Wi-Fi network.
To check if your Wi-Fi network is working correctly, connect another device to your network; if it
connects successfully, try again to connect your watch.
in the Fitbit app on your phone, tap your profile picture > Model
41
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