Problem Description:Heart beat rate does not display
Reason Analysis:
1)Broken heart beat rate cable
2) No hands are placed on both sides of the heart beat rate sensor at the same time
Solution:
1)Open the upper display to check whether the heart beat rate cable is damaged. If it is damaged, it needs to be replaced.
2) When using the heart beat rate sensor, place your hands on the heart beat rate sensor on both sides.