Tigo AS4-A-F installed recently on fully functional Schneider system. Now with the Tigos, the Schneider MPPTs jump back and forth between tracking Vmax and simply operating at the lowest operating voltage allowed by the unit. Both the MPPT 60 (150V) and the the MPPT 100 (600V) have this issue, but in this video the MPPT 60 was tracking Vmax after a reboot. The MPPT 100 does not hold Vmax for more than about a minute.