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Forerunner 245 music unable to detect heart rate

I try to do a 30 min running on treadmill, but the heart rate shows N/A...i have turn on the wrist heart rate... May I know what is going wrong

0 trux over 5 years ago

Try if you find the answer in this support document: The Heart Rate Sensor on My Watch Is Not Accurate

If it does not help, contact the support.

0 J.Khoo over 5 years ago in reply to trux

Try many ways, but still unable to detect the heart rate. When go to Health Stats... The icon shows " ---"

0 trux over 5 years ago in reply to J.Khoo

Contact the support