There is 2 solar panels of 615wp conected to 2 Smartsolar Charger MPPT 100/50, for charging 3 lithium batteries, with a Quatro, CERBO and VICTRON BMS. All the system has been installed by a VICTRON Profissional.
After 2 years the all system worked perfectly until a week ago. Now, when the sun appears at 0600h the system start working normally, ater more or less 7 hours, at 13:00, the 2 MPPT, with the batteries at 75%, both disconnects from the system, state unknown , and disappears from the system. On the next day, at 06:0h ( more or less) everything starts work normally.
What could be the reason?