So my Garmin HRM-Dual heart rate monitor connects to the ZWIFT mobile app on my Android phone, but no hear rate is showing. This has been going on for a couple of months already and really frustrating. Anyone know how to fix?
thanks!
Stijn
It could be an issue with the actual belt. Check it for cracks in the plastic patches and the press studs that connect with the monitor unit.
A change of battery could help as well.
I am also having the same issue. My strap is fine and I just put in a new battery, although it has no problem connecting to my Garmin device. I have read through online forums and blogs and tried to resolve it via their suggestions, but still having the issue. It was working a couple of month ago, but I havenāt been able to resolve it since it stopped. Any other suggestions?
1 Like
Are you also using ANT+ on your pc, Garmin is mainly using ANT+
No. I am not using ANT+. I use Zwift on my iPhone 12pro, depend on bluetooth only. I know my phone sees the HRM b/c it will show up in my bluetooth list (I dont connect it, though I have tried it both ways). I contacted Zwift support and after trying multiple things, was told that the Garmin HRM dual does not broadcast heart rate over bluetooth for third party apps. This used to work, so just to double check I contacted Garmin Support and they confirmed that my the hrm-dual does broadcast hrm with bluetooth and should work with Zwift. I recently removed the HRM from my Garmin Edge, uninstalled Zwift, reinstalled, set everything back up, reconnnected to the HRM strap and still displays 0, then ānot connectedā or greyed out while riding. Iām at a total loss. Iāve tried everything.
1 Like
Iāve got this HRM and itās happened with me a few times. Every time itās been some other device interfering with the signal. I just turn off Bluetooth on everything I wonāt be using during the run (work phone, BT speakers etc), restart Zwift and it always works the next time. Can be a bit annoying though as thereās a pair of headphones that I like using that does it as well but only if I connect them 1st. 
Might not help anyone here but thatās how Iām getting round this problem.
No. Iām using my iPhone. I contacted Garmin and they said it does both Bluetooth and ANT+ and should have no issue connecting via Bluetooth.
See my previous posts with regards to changing your location settings. Thatās probably the issue.
Is your problem solved ? Because I have the same issue. Everywhere bluetooth but no heartbeat to be seen.
There is a long standing issue with the dual connecting. Seems intermittent.
I have Bluetooth, heart rate belt , a Garmin edge 820 and an iPhone XS. . Nothing seems to workā¦
Does the HR pair with your Garmin ?
Yes it does.
Have a read here. See if it helps.
Nope. I noticed they had an apple watch Beta. Its probably not as accurate, but Iāve had a bit more success with it. Disappointing.
issue just started with me for my garmin hrm-pro. it connects but displays 0 bpm - on the laptop, on the zwift iphone app, and on my fenix 6s and garmin edgeā¦ changed battery, cleaned the straps, nothing fixed it yet. iāve been using this without issue since last october
1 Like
For android, resetting network settings worked for me. A user called [mrussotto] on the trainerroad forum suggested it.
Be aware that it wipes all saved wireless network and bluetooth device connections.
Same issue, Garmin HRM. Zwift app on iPad, connects but rate 0 on Zwift app. No issues with rate on Garmin head unit.
Hi @Matt_Doogue, Iām Gian from Zwift. Hope youāre doing well today!
Iāve looked at your most recent ride and it seems youāve been able to get around the problem as your heart rate data was recorded (and it appears youāve been using the same Garmin HRM). However, if the issue re-appears, something else might be stealing your HRMās signal.
As a test, I recommend turning off the Garmin head unit and every other device/app that your heart rate may be pairing with. You can check out our support article for more information.
If the issue persists, please head over to https://support.zwift.com and click āContact usā at the top right so we can provide one-on-one help!