I've noticed recently, while running on batteries with load > PV input, ESS mode, grid on, that the system seems to lose comms with the batteries for a few seconds every now and then (a few times an hour). During this state, the system pulls the load directly from the grid (as I guess it thinks the batteries are flat/nonexistant). Then comms comes back and the system runs off the battery as expected (So I get regular spikes in my grid usage).
|MultiPlus 48/5000/70-100 firmware 433
BYD B-Box Pro v4.22
SmartSolar 250/60 v1.42
System is about 6 months old.
Cable from B-Box to CCGX is maybe 1.5m max.
This is relatively new behaviour...