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HRM Dual Heart rate stuck at 72

I have the HRM Dual. I just bought it two weeks ago. I've gone on about 9 runs with it. During my last run, it worked perfectly for about 45 minutes and then my heart rate descended to 72. It has not moved since. It has been several days and it is very clean. It has no problem hooking up to my phone via bluetooth and connects just fine as soon as I strap up. However, the heart rate is stuck at 72 and doesn't move. Any ideas?

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+2 Freddiebear over 5 years ago

Same problem here. Worked normally for two bike rides, then will only read 72 and disconnects after a short time. ANT+

Even though it was a new unit, replaced battery with same results. Used my original Garmin HRM with strap and the old one reads fine - not the strap or battery.

0 Alex-Trier over 5 years ago

Same here since. Dropped connection to garmin 920xt during run. Ipad as well as treadmill show 72 bpm flat.

+1 2680589 over 4 years ago

Wouldn’t connect, forced a ‘forget sensor’ on edge 530, then reconnected, now stuck on 81 bpm on phone and cycle computer.

0 gz_bike over 4 years ago

Same for me

I checked the battery and it was perfect so it must be another sort of issue

+1 gz_bike over 4 years ago

Same for me

I checked the battery and it was perfect so it must be another sort of issue

0 kelvinqld over 4 years ago

Same problem here. Is there a fix yet?

0 Cane over 4 years ago

Are you sure it's not a reading problem? I'm using ultrasound transmission gel on the strap and for me it's working perfectly (for now).

I have another problem about static charge causing hr reading spikes using a jacket, but I'll open another thread.

0 gz_bike over 4 years ago in reply to Cane

Yes you can be right and using the ultrasound gel helps for sure. I tried to tighten the beld and it started working again but you need to keep it really tight, it's a bit uncomfortable. I'll try with the gel.

0 2680589 over 4 years ago

Next ride I had 200+bpm at the outset of my ride... This morning I had it replaced under warranty so ¯\_(ツ)_/¯

0 2680589 over 4 years ago in reply to gz_bike

I’d be questioning why if the straps connection to your body isn't great that the HRM outputs one steady value. I'd prefer it to output nothing in that case.