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Edge 830 not registering Z7 power

Since a few days ago, my Edge 830 has stopped registering the time spent in Z7 power zone. It all started around May 22nd. On May 20th it registered perfectly, and none of my rides since then have registered any Z7 time.

All rides (working and none working) have been done using 9.75 firmware. And I've checked the ride summary after stopping the activity and before giving the device the chance to sync and the Z7 is already missing in the summary

Those same activities show the Z7 time just fine in TrainingPeaks or Strava, all are using the same zone definitions and all get the activity information from Garmin

Is it just me? Any clue what might be happening?

Thanks!!

  • I finally discovered what is happening!!

    Every time the 830 recommends modifying your FTP at the end of the ride, the new power zones show correctly on the mobile app, but if you look at them in the device (My Stats > Training Zones), Z7 shows as "150% - 150%" (it only covers 1 watt range)

    I corrected the setting on my device a few days ago. Today it recommended a change in my FTP again... and again the same behavior.