Hi all using Growatt spf5000es, running now for 4 days, all good so far but overnight even with full batteries or near full at 9.30pm it switches to grid for the rest of the night until 8.30am. I’ve looked through the setting but get myself confused can anyone help please. Not to critical at the moment as not using very much overnight but I will in the future and would like to use my stored energy first.