I bought the whole system from the neighbour who was upgrading. It ran beautifully for over two months but fruited today. I'm completely off-grid, 6 panels charging through Schneider MPPT 4 Rolls deep-flooded, set up as 24v. Batteries are in float mode, reading 27v.
Unfortunately, I can only configure the Multiplus via dips. Elsewhere someone suggested that low bat cut off might be misconfigured, but I can't find anywhere how to do it with dips.
Thank you for any advice.