Intermittent HR band disconnects
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@jakubdr I have same issues after the firmware update, but i have a Race S and suunto smart hr. I tried to reboot, doong the pair again but sadly nothing works for me.
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@jakubdr I used to experience the same symptoms when my hr belt was getting old and bad. And with belt I mean the elastic strap with the conductive pads. The small button unit was ok, just the connections inside the belt were breaking. I bought a replacement belt and it fixed my problems (Suunto Smart belt, not Polar).
Can you borrow another belt from someone to check if this is the case?
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@jakubdr SV here also no issues for me since the update using an external HRM.
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@BrunoH good idea, I will try another belt that I have. Thank you for the suggestion!
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@BrunoH i’ve tried another belt (new one) and the results are the same… but I’ve tried with my wife race s (with the old firmware) and the sensor works flawlessly
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I have same issue with my Race.
At first it vibrate randomly during activity but I thought it was the SuuntoPlus or Guide or Target. However it start vibrate randomly during daily use.
After that I did soft reset, everything seems okay. Then I start an activity without SuuntoPlus, or Guide, or any Target, it still vibrate randomly.It is very annoying and I thought there is some problem of the watch. Now may be the root cause is the new firmware…
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@jakubdr used two different HR sensors since update, no issues
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I’m having the seme issue and is very annoying! Can’t track anche check my heart rate properly is a ridiculous in 2025 on a top level watch, I’m very disappointed!
I would like to get back to latest firmware version, anyone can tell me how?Already Did anything the customer service suggest me and it’s truly not working!
I’ve got Wahoo trackr and is perfectly working on other devices -
@jakubdr Same here with Race S. I know I have posted it everywhere, but yep. What you are experiencing is real.
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Here with an update. After couple of days the number of disconnects lowered to 3-5 per hour. The disconnects started always after around 20 minutes into the run. Today I tested Coros Arm Band and no disconnects at all, so at least in my case it seems to be related only to SV and Verity Sense.
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New firmware 2.44.52, sadly, same “old” problems. The HR band continues to disconnect intermittently
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@alessandro.venezia Which HR belt?
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I don’t think I’ve ever had a disconnection. Could it be the battery or a worn out belt?
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@Brad_Olwin suunto smart, i’ve tryed new battery and new belt… i had problems since firmare 2.44, with my wife’s race s with 2.43 firmware works flawlessly
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@alessandro.venezia Did you find a solution? I’m having exactly this problem of irregular connection with the watch with my belt which I bought about 3 months ago. The problem only started a few weeks ago.
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@alessandro.venezia Did you find a solution to this? I’ve had this exact problem now for a couple of weeks with a pretty new heart rate bel (Suunto Smart)
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@JaakkoK I’ve the same issue on my Race. Today it drove me crazy, pretty much every 10-20s it disconnected and reconnected again. This time it was a Polar OH1 but it also happened to my chest-belt with a lower frequency though.
I already replaced battery in my chest-belt 2 times since the infamous Q2-firmware release. The battery-drain of the belt is insane high since then. The Polar OH1 was charged to 100% before the run.
There is something fundamentally wrong with the BLE handling. Yesterday I turned on the OH1 while sitting at the desk, the Suunto Race immediately connected to the OH1 although it was sitting in watchface (a beep on the watch, OH1 was no longer reachable from device I wanted to use it with).I really hope for the next firmware release…
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@MarkusG said in Intermittent HR band disconnects:
There is something fundamentally wrong with the BLE handling. Yesterday I turned on the OH1 while sitting at the desk, the Suunto Race immediately connected to the OH1 although it was sitting in watchface
There is and Suunto knows about it. If and when they fix it, remains to be seen.
Have you tried restarting the watch to see if it still connects to the sensor outside of sport activity? -
Have you tried restarting the watch to see if it still connects to the sensor outside of sport activity?
Yes, that helped. I was able to continue working with the BLE stack on the embedded device I currently work on
Before restart the Race was always “stealing” the connection.
And I like using the Polar OH1 as a test-device, so the good thing was that it showed me that there is still something left running in the Race that tries to reach a sensor. I had a run with the very same sensor a few hours before. -
@MarkusG in the next firmware update, sensor pairing will receive same major overhaul and hopefully that will get also fix issues seen with previous updates as well
