i have a 2x100W Mono Solarenviroment and ich changed in 01/2019 my old Controller to an BlueSolar MPPT 100/30, from 01/2019 to 03/2019 it works fine an on the solarpanel side from the controller are up to 45 V, on the ouside up to 14,4 V, all fine.
A few dys before the controller works and loads the batteries, but at i think 11 oclock the Volage on the solar panel side goes doen to 12,5V to 12,90 V, later ich checkt the V from the panels and the have 37V, when ich remove the solarpanelcable from trhe controller its still 12,5 - 12,9 V.
Is the Controller damage? The Panels looks good, when i load the batteries with the Blue Smart IP22 12V 30A loader all is fine (loading up to 14,4 V) the BMC shows 100%.
I tested the batteries they also ok.