2x Multi 3kw - 4x Pylon US2000 - Bluesolar and SmartSolar MPPTs - Off grid system.
This morning, from the logs, around PV wakeup time, the VBUS battery voltage dropped to 36.42v from a nominal 47v - SOC was good at 40%
BMS voltage was reporting good however, at around 48.5v
Minimal AC loads. cica 140w - which was consistant overnight.
VBUS voltage suddenly dropped then caused inverter to cut out as you would expect.
After a reset and time to recover - system appears to be working as expected.
What could cause the drop in VBUS battery ? - seems to align with the BlueSolarStartup which is a south facing array.
Possible signs of an early failiure ? or DC PV string issue ?
