Hello,
On my last two trainings my Garmin FR265 had problem with reading HR. I starded hard and I should have HR around 170-180, Garmin shows 120-125. I stopped training clean sensors and starded again. Still the same, maybe 130-140, no more. This situtation happend week earlier as well. Only on hard trainings.
This stitutaion never happend when I`m running slowly.
When the readings were not correct I had a replacement belt not original form Garmin). Could this affect the HR reading?
Regards,
Maciek.
