This has come up a few times and, if I recall properly, it's because the lower end of the heart rate zone is set to 0. If you set it 1, the problem should go away.
I'm writing this from memory so if you want more detail, search the forum for this error. You should find multiple threads that are more detailed and specific.
This has come up a few times and, if I recall properly, it's because the lower end of the heart rate zone is set to 0. If you set it 1, the problem should go away.
Many thanks, problem solved for me, it was not the heart rate, it was the power zone that was set 0....
