Intermittent HR band disconnects
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This problem with Suunto HR Belt is still there, it’s not fixed… annoying
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@SuperFlo75 Minę after update finally works SO FAR. Fingers crossed.
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Aujourd’hui, c’était 1h30 de vélo. Toujours le même problème de déconnexion de la ceinture cardiaque (ceinture Suunto neuve)…
C’est frustrant.
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said in Intermittent HR band disconnects:
@SuperFlo75 Minę after update finally works SO FAR. Fingers crossed.
Nope. Today it didn’t found my chest strap. Before start running I went to connected devices, chooses chest strap and couldn’t connect. I disconnected all devices (well, strap chest only) did soft reset of watch, and tried to connect it but my watch can’t find it. Strap was wet, on my chest, with brand new battery and of course connected on good side… There’s still problem with bluetooth
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I had problems before with intermittent disconnects with the Suunto smart sensor and Polar Varity sense, but it wasn’t to bad or long.
On saturday I had my first total failure. Started the activity, on the startup screen it picked up the Polar Varity sense and connected to it. When the activity started the watch lost connection to it, and didn’t connect to it for the whole duration of activity (8 h).
The sensor was on and broadcasting over bluetooth.
This is a really bad bug. The OHR is not good enough for accurate tracking, and now the external sensors wont’ work. -
I also have problems with my belt loosing connection. It works for a bit and then suddenly stops and then after a while again it drops out. Im on the latest firmware.
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@Henrik-Nilsson Suunto should put this on top of their priorities because it affects all watches (Suunto Run for me) and all devices (chest straps and bluetooth headphones).
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This problem exists since November 2025… it’s a little bit annoying
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I have the same issue with a Vertical 2 in combination with a Suunto Smart belt (new), and with the Polar H9.
Very annoying as the reason i wear a HR strap is to get accurate HR readings in my run.
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Going to post it here also to see if Suunto makes this issue a priority to them.
I saved today’s run to report tomorrow.
2 issues happened. Max heart rate much higher than registered on the HR chart and in the end I did a pause and the connection to the Suunto Chest Straps was lost when I restarted a few seconds later.
The maximum HR registered by the chest strap was 154bpm but somehow on the Max HR in the intervals summary many values of 170bpm (these are wrong) appears. Also it can be seen that the HR chart doesn’t end. It was the pause. Unfortunately Suunto seems unable to solve this issue that affects all watches and makes all data contaminated by wrong measures or lack of them.
The data sent to other plataforms like Strava or Intervals.icu is correct except for the disconnection in the end.
