My Polar Loop 2 doesn't show my heart beat. Why?

  • Make sure you're wearing a heart rate sensor that works with Polar Loop 2: either Polar H6 or H7 Bluetooth Smart.

  • Make sure the electrode areas of the heart rate sensor strap are moistened. How to wear a heart rate sensor with a textile strap.

  • Make sure the heart rate sensor is correctly paired with Polar Loop 2:

    - Wear the sensor.

    - Bring your Polar Loop 2 right next to the sensor and tap the touch button.

    - Wait until the LED display turns off, and then wait a couple of seconds until the text PAIRED scrolls on the display.

    If pairing doesn't work the first time, please try again in 30 seconds and make sure there are no textiles between Polar Loop/Polar Loop 2 and the heart rate sensor.

    When pairing, make sure you are far (10 m/ 33 ft) from other Bluetooth Smart heart rate sensor users. You only need to pair the sensor once.
  • Make sure your Polar Loop 2 is not in flight mode.

  • Have you tried to reset the Polar Loop 2 Bluetooth?
  • Have you tried to stop the heart rate training session and start a new one?

    - Remove the heart rate sensor from the strap.

    - Wait 30 seconds.

    - Place the sensor back.

    - Tap the Polar Loop/Polar Loop 2 touch button.
  • With H7, if the sensor restart didn't help, reset the sensor by taking battery out for 6 minutes and touch both snap connects for 10 seconds right after you have taken the battery out.
  • Is your heart rate sensor battery empty? Have you tried changing the battery? See the instructions video for H7 or H6.

    - Battery lifetime of Polar H6 is about 300 hours.

    - Battery lifetime of Polar H7 is about 200 hours.
  • Is your Polar Loop 2 battery almost empty? If the display shows CHARGE when tapping the button, you can’t start a new heart rate sensor training session and any on-going one will stop.
  • Is your Polar Loop 2 syncing data with the Polar Flow mobile app? You can't start a new training session with a heart rate sensor when Polar Loop 2 is syncing data with the app. Wait until the syncing sign disappears before starting a training session.

  • Is the heart rate sensor in contact with any other devices via Bluetooth?
  • Have you tried turning Bluetooth off and on from your phone? You might even try and power down your phone completely and turn it back on, if the Bluetooth acts up on your phone.
  • Have you checked you have the latest firmware in your Polar Loop 2? When you connect it to your computer, Polar FlowSync tells you if there's an update for it. If you use our mobile app, we suggest you keep it up-to-date too by checking it on the app store on your phone.

If any of the above mentioned didn't solve the problem, please contact your local Polar customer care.


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