Wrist Heart Rate Auto Not Working?

Apologies if this has been asked before / I'm an idiot and don't know what I'm doing.

I have an HRM Tri and a Fenix 5x. When I finish a run, it'll happily add it to Garmin Connect with all of the running dynamics, but seems to be using the heart rate from the wrist. If I then go to "Download heart rate data" from the watch, it'll find it and sync and upload a new activity (grr, duplicates.) It seems clear that SOMETHING is different between the two (slightly higher calories, different values for Training Effect, Zones actually show up as zones,) but I'm not sure why.

I haven't tested this yet, but I think it's because the "Auto" for wrist heart rate monitoring isn't actually detecting the HRM Tri (even though it says it's connected and all of the running dynamics data is clearly logged,) so I'm at a loss of what to do. I just don't want the weird duplicated activities everywhere. I thought it was supposed to just pull in the HRM data and upload only once.

Anyone else run into this?

Run pre-download data: https://connect.garmin.com/modern/activity/1701078065
Run post-download data: https://connect.garmin.com/modern/activity/1701058279

CS
  • Setting To "Off" seems to work...

    Did this activity with the wrist monitor turned off, and it seemed to work fine: https://connect.garmin.com/modern/activity/1702623196 -- it's just a pain to turn off and on manually with every activity.

    Has anyone else seen this?
  • External HR Monitor

    I have used my Suunto Smart Sensor (BTLE) with my fenix 5, and once I start an activity, after a short period, watching the Heart blink in the watch, and waiting for it to go solid, I will see "External HR Monitor connected". Then I start the activity, and all seems well. Perhaps the ANT+ belt will need to do the same?
    I would say go to the activity, but don't "start" it until the heart stops blinking, indicating that the HR Monitor is connected, and see if you don't see the "External HR Monitor Connected" message. Then you know which one it's using.
    Hope that helps.
  • Still Different Results

    Hey, thanks for the tip.

    I usually wait until I see the connected message on the watch before doing anything, but paid close attention before my latest bike ride to be sure. Before the ride, I waited until the HRM connection message appeared, did my ride, and then before selecting "Done" I waited for another message of its connection to appear again. I then saved the activity.

    The results for that are here: https://connect.garmin.com/modern/activity/1704751672
    I then opened the activity again on my watch and selected "Download HRM data" and got this as a result: https://connect.garmin.com/modern/activity/1704775899

    There are still differences between the two, so I don't THINK the first one is using the HRM data from the strap, but I can't tell for sure. You can see the differences in the heart rate chart, as well as in the Training Effect and Zone numbers.

    I'm at a loss at this point. What's doubly weird is that the running dynamics come through just fine on the first sync when doing a run -- and they're collected by the strap as well. I think it's just that the wrist-based heart rate is taking precedence. Or perhaps Garmin does some merging between the two for the first result, and the second result is purely from the strap. I have no idea.