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Heart Rate Zone data missing/at 0% after run

My FR245 got pretty messed up with this last update but I can't figure out if this problem is a setting I need to change or not.

On my last few runs, the heart rate zones have been blank (0% or -.-). However, the heart rate function is working properly and taking accurate readings throughout. I checked the heart rate settings and it is on %Max heart rate (not HRR or Lactate Threshold), and the ratings are normal.

Anyone had this problem or can help me solve this? 

  • Hi, does your heart rate graph also look like this? Because this is how mine looks with the forerunner 245.. The connection drops seems related to when the watch alerts me about either a lap or pace during the run. In between warnings it records the hr-data fine..