Suunto app Forum Suunto Community Forum
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Register
    • Login

    Suunto heart rate strap only works when pausing and un pausing the current activity

    Scheduled Pinned Locked Moved Spartan
    9 Posts 7 Posters 479 Views
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • P Offline
      peringmar Silver Members
      last edited by peringmar

      Before starting an activity the watch finds my heart rate strap instantly. But when I hit record the heart rate will not be displayed correctly. It will display a low value regardless intensity.

      First when I pause and then unpause the activity the heart rate will show correctly. Does someone else have the same issue? If yes what watch are you using? Maybe this does not just apply for the Spartan and if you have the same problem, maybe try this trick.

      In the screenshot below is an example of the issue. For the first manual laps the heart rate is displayed wrong but at lap 6 after pausing and un pausing the watch it is displayed correctly.

      Could this be a bug?

      Screenshot_20210427-174904.jpg

      Here is a better image showing the problem.

      Screenshot_20210427-181455.jpg

      Suunto Spartan Sport WHR power user

      surfboomerangS BrunoHB 2 Replies Last reply Reply Quote 0
      • surfboomerangS Offline
        surfboomerang @peringmar
        last edited by surfboomerang

        @peringmar I have never seen this with my S9B combined with HR strap. Just to be sure… the watch itself is also showing incorrect values or is it just SA?
        Is the watch displaying the correct heart rate before you start?

        Just some basic HR strap things you can try:

        • try wetting the contacts / apply contact gel
        • soft reboot the watch
        • remove / replace HR sensor battery.
        • re-pair the HR sensor
        • Try another sport mode
        • re-create your sport mode

        Suunto Vertical Titanium Solar
        OnePlus Nord 4

        P 1 Reply Last reply Reply Quote 0
        • P Offline
          peringmar Silver Members @surfboomerang
          last edited by

          First, thank you for the suggestions, but I have already checked most boxes due to this being a repeated problem for me.

          The watch shows the correct HR before start.

          To clarify, it is the watch that shows the wrong data during activity.

          Suunto Spartan Sport WHR power user

          1 Reply Last reply Reply Quote 0
          • Dimitrios KanellopoulosD Offline
            Dimitrios Kanellopoulos Community Manager
            last edited by

            if its in the first minutes most probably its contact issue.

            This is what I had observed.

            Prestart -> all ok
            First x minutes -> bad
            PAusing helps. Perhaps the strap is not moving.

            In regards to that, please try to use a non nylon / polyester t-shirt / top. Maybe that creates static

            Community Manager / Admin @Suunto
            Creator of Quantified-Self.io
            youtube.com/c/dimitrioskanellopoulos
            https://instagram.com/dimitrioskanellopoulos
            https://www.strava.com/athletes/7586105

            P 1 Reply Last reply Reply Quote 0
            • P Offline
              peringmar Silver Members @Dimitrios Kanellopoulos
              last edited by

              @dimitrios-kanellopoulos
              But what I find strange is that for this activity it did not find my correct heart rate for 6 minutes, but then a 2 second pause solved the problem.

              That is why I usually do this 2 second pause right after starting (just forgot this time) because otherwise HR reading won’t work.

              Suunto Spartan Sport WHR power user

              B 1 Reply Last reply Reply Quote 1
              • B Offline
                Bradleyd Bronze Member @peringmar
                last edited by

                @peringmar, I experienced this same funky low bpm count on a cycling commute yesterday using a Spartan Ultimate and a SmartHeart sensor. I’ve not seen this same low jump(s) using my regular commuting Ambit3 Sport watch with the same strap.

                Looking at the below image from SA, the heart rate before 0:12 minutes is absolutely too low, the jump to 137 bpm is a good correction and happened when I stopped riding to fiddle with the watch and strap, the jump to +165 bpm is wrong before the 0:20 mark, the remainder of the rates are fairly accurate.

                @surfboomerang , I don’t think this is an issue with wetting the strap or battery. The watch displayed roughly the same values I see in the SA time series.

                Adding my experience, since I had the activity sitting open when reading this post.

                2f305399-2cfa-40b4-b3ee-9e6a360c2476-image.png

                Mff73M 1 Reply Last reply Reply Quote 1
                • Mff73M Offline
                  Mff73 @Bradleyd
                  last edited by

                  @bradleyd said in Suunto heart rate strap only works when pausing and un pausing the current activity:

                  Spartan Ultimate and a SmartHeart.

                  Is it the new Suunto Model this Spartan Ultimate? 🤣😍
                  And how do you feel with such a Smart Heart? 😊
                  Hey, just kidding 😉😇

                  Suunto Spartan Ultra (since 2016) FW: 2.8.24 (retired)
                  Suunto Vertical all black
                  Wife : S9PP
                  SA: Always the latest beta :)
                  Android 13, Galaxy S205G

                  1 Reply Last reply Reply Quote 0
                  • BrunoHB Offline
                    BrunoH Gold Members @peringmar
                    last edited by

                    @peringmar I’ve experienced something opposite of yours. In the beginning of an exercise my watch shows reasonable figures, but afterwards the Suunto App log looks like there’s double heart rate (way over 200 bpm) for a few minutes and then it finds the correct heart rate.

                    Compasses: M-311, A-10, SK-7
                    Diving: Finnlight Navy 90, Vyper
                    Sports: Metron, S7, S9B and Vertical

                    1 Reply Last reply Reply Quote 2
                    • J Offline
                      Jannas10
                      last edited by

                      I’m having the exact same issue and with a Suunto 9 Baro, supposedly their flagship watch of a few years back. It’s not a heart rate strap issue. Before starting the activity the heart rate reading is accurate, the moment I start the activity the reading is 35% odd lower. The moment I pause the activity, the reading is accurate again.
                      Have you found a solution? It’s driving me mad. I feel let down by Suunto.

                      1 Reply Last reply Reply Quote 0
                      • First post
                        Last post

                      Suunto Terms | Privacy Policy