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    Heart Rate Measurement stops

    Scheduled Pinned Locked Moved Suunto 9 Peak Pro
    suunto 9 peak pro
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    • Ludwig PichlbauerL Offline
      Ludwig Pichlbauer
      last edited by

      Hi together,
      I think with the latest update to 3.39.20 the bug is back.
      Yesterday, soft reset helped to reactivate Heart Rate sensor, after today’s “4-hours sleep” (it stopped working again in the middle of the night) I have to do another one…
      Somebody seeing the same device behavior?
      Kind regards:)

      Suunto 9 Peak Pro (current)
      Hammerhead Karoo 2 (current)
      Suunto 9 Baro Black (retired)
      Suunto Spartan Sport Wrist HR (retired)

      flo7zF pilleusP S M R 7 Replies Last reply Reply Quote 5
      • flo7zF Offline
        flo7z Silver Members @Ludwig Pichlbauer
        last edited by

        @Ludwig-Pichlbauer

        Yes I do observe the same since the last update I did 3 days ago

        I’m on 2.39.20 with 9 peak pro

        Florian Z.
        Suunto 9 Peak Pro
        Suunto Wings
        Suunto D4
        Suunto Ambit 3 Peak

        B 1 Reply Last reply Reply Quote 4
        • pilleusP Offline
          pilleus @Ludwig Pichlbauer
          last edited by

          @Ludwig-Pichlbauer said in Heart Rate Measurement stops:

          Somebody seeing the same device behavior?

          No problems since the last update. OHR, sleep tracking and heart rate variability are working without any issues.

          https://www.instagram.com/moves.are.life/
          Suunto Vertical Black Lime
          Suunto 9 Peak Pro Black
          Suunto Spartan Ultra Stealth Titanium

          J 1 Reply Last reply Reply Quote -1
          • Ecki D.E Offline
            Ecki D. Bronze Member
            last edited by Ecki D.

            Same here after the Softwareupdate!😢 This Morning HR and Ox stopped to work during the night. Sleep tracking stopped too.
            Watch enters Sleep / do not disturb mode at 23:00. Measurement seemed to stop at around 2:45, when the OX Sensor seemed to do its last measurement. OX Sayed last measured 5 hours ago when I realized it around 7:50. So I guess there is a coincidence between HR sensor and ox sensor.

            Will try to turn of OX sensor if it happens again.
            Couldn’t reproduce while starting OX measuring manually.

            Didn’t have this issue for quite a long time.

            Herzfrequenz_0.jpeg

            HR After Restart of PP9
            Herzfrequenz.jpegBildschirmfoto 2024-12-19 um 11.04.02.jpeg

            https://www.strava.com/athletes/37982563
            https://www.instagram.com/macdev

            1 Reply Last reply Reply Quote 1
            • J Offline
              jussim Bronze Member @pilleus
              last edited by

              @pilleus Same here, so far at least. Kind of nervous reading about these issues…

              9PP since 09-2025.

              Brad_OlwinB 1 Reply Last reply Reply Quote 2
              • Brad_OlwinB Offline
                Brad_Olwin Moderator @jussim
                last edited by

                @jussim @Ecki-D I have reported as a bug to Suunto, this is under investigation.

                Vector/T6c/Ambit 3 Peak/S5 Copper/S3/S7 Ti/S9 baro Ti/S9P Ti/S9PP Ti/Vertical Ti/Race Ti/RaceS/Ocean/Wing

                1 Reply Last reply Reply Quote 7
                • Z Offline
                  Zvezda
                  last edited by

                  I’ve also had the same problem with HR Measurement stops since last update. Soft reset helps only for couple of hours, then it stops again.
                  Any recommendation how to solve the problem?

                  Mff73M 1 Reply Last reply Reply Quote 0
                  • Mff73M Offline
                    Mff73 @Zvezda
                    last edited by

                    @Zvezda said in Heart Rate Measurement stops:

                    I’ve also had the same problem with HR Measurement stops since last update. Soft reset helps only for couple of hours, then it stops again.
                    Any recommendation how to solve the problem?

                    wait and stay tuned for informations/fixes
                    https://forum.suunto.com/post/159093

                    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
                    • S Offline
                      Sergio Nasi @Ludwig Pichlbauer
                      last edited by

                      @Ludwig-Pichlbauer I can confirm the bug is back with 2.39.20.
                      No measurement of heart rate after a random period of time, I just discover it when I need it and a soft reset is required in order to restore the heart rate detection.
                      Very annoying, particularly because it’s a recurring problem

                      EgikaE Ludwig PichlbauerL 2 Replies Last reply Reply Quote 2
                      • EgikaE Offline
                        Egika Platinum Member @Sergio Nasi
                        last edited by

                        @Sergio-Nasi as written above this is currently being worked on by Suunto.

                        What helped me with other firmwares when OHR was jammed: start a manual SpO2 measurement. Maybe you want to try instead of resetting the whole watch?

                        t6, S6, Elementum Terra, Ambit 3 Sapphire, Spartan Ultra Copper, Traverse Alpha, S7 Graphite LE, S9B Ambassador, S9P Granite Blue Titanium, S9PP Titanium Sand, Vertical All Black, Race Titanium Charcoal,
                        Race S All Black - TI Canary - Titanium Courtney

                        M 1 Reply Last reply Reply Quote 2
                        • Ludwig PichlbauerL Offline
                          Ludwig Pichlbauer @Sergio Nasi
                          last edited by

                          @Sergio-Nasi yes, 2.39.20 - Suunto 9 Peak Pro

                          Suunto 9 Peak Pro (current)
                          Hammerhead Karoo 2 (current)
                          Suunto 9 Baro Black (retired)
                          Suunto Spartan Sport Wrist HR (retired)

                          1 Reply Last reply Reply Quote 0
                          • M Offline
                            magbueno @Ludwig Pichlbauer
                            last edited by

                            @Ludwig-Pichlbauer said in Heart Rate Measurement stops:

                            Hi together,
                            I think with the latest update to 3.39.20 the bug is back.
                            Yesterday, soft reset helped to reactivate Heart Rate sensor, after today’s “4-hours sleep” (it stopped working again in the middle of the night) I have to do another one…
                            Somebody seeing the same device behavior?
                            Kind regards:)

                            Same problem for my Suunto after the last update, some days ago. Reset and manufacturing settings do not solve the problem. The update is 2.39.20

                            1 Reply Last reply Reply Quote 0
                            • M Offline
                              magbueno @Egika
                              last edited by

                              @Egika It doesn’t work. Despite starting the measurement manualy the leds doesn’t start flickering. Thanks anyway.

                              1 Reply Last reply Reply Quote 0
                              • B Offline
                                ben74 @flo7z
                                last edited by

                                @flo7z l have the same problem

                                S 1 Reply Last reply Reply Quote 0
                                • S Offline
                                  sahara91 @ben74
                                  last edited by

                                  I am also dealing with this problem for nearly a week alrady. Very annoying!

                                  1 Reply Last reply Reply Quote 0
                                  • M Offline
                                    MartinK
                                    last edited by

                                    Same for me. Switching of my peak pro and starting it again reactivates the lights for measurements again but after around 4-6 hours it’s stops again. Manual measurement not switching on lights anymore.

                                    1 Reply Last reply Reply Quote 0
                                    • A Offline
                                      arkaitzgalvan
                                      last edited by

                                      Hi ! since last Software update on my suunto 9 peak prolast week,

                                      1 Reply Last reply Reply Quote 1
                                      • ania92A Offline
                                        ania92
                                        last edited by

                                        Hello,
                                        Happens to me as well since update to 2.39 and only soft reset helps. Please let me know if there is any solution for this problem.

                                        A 1 Reply Last reply Reply Quote 0
                                        • A Offline
                                          arkaitzgalvan @ania92
                                          last edited by

                                          Hi all,
                                          Since Last Week’s Software Update, all of us are suffering Heart Rate issue on our Suunto 9 Peak Pro. This New Software Version has an error on Heart Rate Function and this is very annoying for any athlete or sport lover.
                                          Today I spoke with Suunto’s Chat asistance and they confirm me how to solve it.
                                          Meanwhile they are working on it, we all have to change the Software to the previous version 2.37.48
                                          I did it today and by the moment Heart Rate issue is solved changing to the previous version

                                          1 Reply Last reply Reply Quote 0
                                          • vincent mayousseV Offline
                                            vincent mayousse
                                            last edited by

                                            Hi,
                                            Same here since the last firmware update (2.39.20).
                                            Also experienced this issue with a former version of the firmware (early 2024, as stated when this topic was opened). It was solved with an update mid-2024, but now it went back again a couple of weeks ago.
                                            I hope Suunto is working on this indeed…Very annoying, I have to do a soft reset before every activity (because even during the day, HR sensor stops abruptly, not only during sleep…)

                                            1 Reply Last reply Reply Quote 3
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