Garmin Dual HR zero reading

Since one of the more recent updates (within about a month) my Garmin Dual chest strap, connected via BT to ATV, shows zero for my HR and gives a connection error in game. If I pair devices with phone, I can see my HR. This seems to suggest it isn’t the HR strap. Battery replaced somewhat recently. Known issue?


Hi @Bthlonewolfm Welcome to the Zwift Forums!
Fernanda here, part of the support specialist team at Zwift.

I appreciate you using this space to share your issues with the HRM, I took a moment to look at your account and I verified that the HRM is losing connection when connected directly to the Apple TV and this is not happening when you paired via the Zwift Companion, can I please recommend you to:

  • Please be sure the latest version of tvOS is installed, tvOS 17.5.1.
  • Also, as part of the troubleshooting steps, could you please check for any interference or any other fitness App that can be stealing the information broadcast by the HRM?, check out this article for more tips.
  • In case you are using multiple devices with Apple TV, as it has limited Bluethoot channels, it is always better the pair via the Zwift Companion to avoid disconnections.

Give a try to this steps and let us know if the issue persists.