I've turned off auto-calibration for my Vector 3 and I always calibrate them manually before each ride with my FR-935. I configured the option to have a calibration prompt each time the V3 connects to the 935 and I simply click yes and I calibrate, very simple and completely under control.
The strange things is that sometime after the calibration I get a message "Offset 0" and sometime I get a different message with the current reading of the torque measured (a variable number near 0). I think that in both cases the calibration should be successfull but I can't understand what this different behaviour depends on ...
The Other thing I've seen is that when I frstly installed my V3 the calibration offset after calibration was often different from 0 (even 40 or 60), but now it's always 0.
Is this a common behaviour? Any idea about the different calibration outputs? From what I've understood in the manuals, the calibration torque value should be displayed if you do a second calibration just after the first one, but I'm not sure that this is correct
I've seen this also. I know I saw it a few times on my FR935 but I can't remember if I have seen it recently on my F5+. I haven't had any weird readings or behavior associated with the different message, so I have just ignored it when I have seen it.
That's a known issue on the display side (on Edge/Fenix/FR units). If you calibrate directly from the reminder prompt, it does not transition to the live torque display. If you do a manually triggered calibration any other time, it does transition.
But I have a Garmin 920XT unit, and torque display became zero after calibration too! It was non zero for 10 months or so but now it is always zero. Is this a problem and what should I do? I calibrate it manuaally every time, autozero is ON.
I’m having this same concern. For the first 6 months I had the pedals, I would usually get some sort of offset number like 3 or -2. Now it’s Always zero and it’s been drifting away from what my training reads.