Having this issue as well on the FR245. Heart rate sometimes works with a bit of lag, sometimes stays in the 110-120 range when I am all out around 170-180 for 4-5 minutes. Frustratiing to check the watch and know the readings are completely off. I chatted with Garmin Support and they pointed to basic documentation: make sure there is no tatoo where the sensor goes, wear it tight enough but not too tight, etc. I do all this, and with the exact same tightness sometimes it tracks OK sometimes not at all. Looks like a software problem more than hardware, at this point.
Yes, exactly. During runs it mostly works just fine, but for my indoor sports (badminton) it simply stops working after a while.
Garmin Support suggested I get a replacement unit at the shop(where the watch is completely out of stock -and it's likely just a sw issue,so I see no point in returning it)
The HR issue is fairly reproducible, thus, if any Garmin techy is reading: I have a (embedded) software engineering background, if there is any way I can help collecting debug info for you let me know.
I am having problems with my Forerunner 245 Music where my HR readings suddenly drop down maybe 20bpm and plateau for the remainder of my activity.
For example, I ran a 23km great ocean road race on the weekend. At about the 15km mark my HR was sitting at where I'd expect (165bpm) but then as I began to put more effort in over the last 8km, the HR reading spiked down and sat on around 140bpm for the remainder of the race. This is directly opposite to the amount of effort I was putting in (I'd expect it to be in 170s and maybe even 180s for the final push).
Is anyone else noticing these types of in-explainable drops in HR reading?
The website lists the typical factors which may affect HR reading (wrist bone interaction, too loose/tight, not cleaned etc.) however I don't believe this would explain why the readings seemed accurate at the beginning but as I went on, the readings dropped.
I don't particularly feel like purchasing another $100 worth of chest monitor either...
Just happened to me again. That's 3 activities in a row this has happened. Start the activity (walking) and HR just sat at 95-100 even though I was climbing hills. Stopped the activity and started a new one and still nothing. Then I tightened the strap to the point it felt like a tourniquet and suddenly my HR jumped up to where it should be. Several minutes later though it dropped back down to that 100 mark. I wiggled it around on my wrist and it jumped back up again and stayed there for the next hour of the hike. I just don't get it. I had a VA3M for awhile but returned it for the same issue. I have a bit of hair on my wrist area but nothing crazy. I even tried wearing it on the inside of my wrist where there isn't hair yet it still was too low.
I have been pleasantly surprised by how accurate my FR245 WHR appears to have been for the month of running workouts I have recorded. I didnt have high expectations, but it responds quickly to increased effort and is close enough when checked with a manual carotid measurement. It also matches closely with a gym stationary bike.