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New HRM-PRO not reading HR correctly

Recently received a new HRM-PRO as my previous one broke. Never had issues with the previous one. Everytime I wear my new one, my heart rate isn't accurate. I've wet the pads, wet myself. The previous one was absolutely fine and I do nothing differently with this one. I will feel my heart beating out my chest, say around 180bpm and my HRM-Pro says its around 120 odd. Is there any tips to improve the accuracy or is it a malfunction with the product?

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+1 seilogramp over 2 years ago

In my case, I sometimes have erratic readings during low humidity conditions. Check out the Garmin suggestions if you haven't already - My Heart Rate Monitor Strap is Reporting Erratic Data | HRM-Pro

6548724, I'm sorry you didn't like my answer.

0 DorianRunner over 2 years ago in reply to seilogramp

I've tried everything in the suggestions on that thread, thank you. I will give it another go on my next workout and if I don't get no joy I will contact Garmin. Thank you for your reply.

0 PiratDjinn over 2 years ago

Hi. I have the same problem as you(and many more) but the other way around. I sit by the computer as I type this with the HRM-Pro connected and it says my heartrate is 140bpm.

It started after I updated my watch (FR 955) to latest firmware (13.22). The strap is on version 8.80 and I haven't had any problems with it before, changed battery twice, otherwise it has just been a smooth ride since day 1.

Something with the connection broke for me when the watch got the upgrade.