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Forerunner 955 HRV Status is inconsistent and not reliable

3 months ago I got a replacement of my Garmin 955 Solar (the elevation sensor was not working) and now I face another problem, but this time it's the HRV that's not useful/reliable.

Do you think that's a software issue or is it hardware again?

I've tried using different straps and I don't think it's watch - skin issue.

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Bitti over 1 year ago +1

At least on my 965, the problem was solved by force-rebooting the watch (keeping the light button pressed until the watch turns off). After that the HRV was back to normal the next night.

(Based on that…

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0 Bitti over 1 year ago

At least on my 965, the problem was solved by force-rebooting the watch (keeping the light button pressed until the watch turns off). After that the HRV was back to normal the next night.

(Based on that I'd say it's most likely a firmware issue. Hopefully they'll be able to fix it soons, Garmin seems to already be aware of the problem.)

0 2394257 over 1 year ago in reply to Bitti

I don't think that solves it on 955 I've tried rebooting and it's still stays that way, I hope it's a firmware issue as I don't want to do another change :(

0 jambongris over 1 year ago

My HRV data has full coverage pretty much every night. I have small drops on rare occasions but nothing like what you’re seeing. I have an FR955 that is always running the most up to date FW version (but not the betas).

0 2394257 over 1 year ago

Image from today after a reboot last night.

0 Bitti over 1 year ago in reply to 2394257

Just checking the possibilities: how tight/loose did you wear the watch during the night?

0 2394257 over 1 year ago in reply to Bitti

I have tested the default band that comes with the 955 being tight/loose, I've also got a velcro one so that it's the best possible way -> my previous watch did not have this problem with the default band no matter how I wore it.

0 2394257 over 1 year ago

I tried wearing the watch on the inside of the hand (measuring near the wrist) for the whole night, nothing changed - it's even worse