Hi! I have a Quattro 48-5000/70 newest 400 range fimware with LFP smart batteries. Quite often the charger stops charging, gives Fault indication and for some time doesn't restart.
The inverting part is ok. When plugging in, the mains lights up, and immediately when starting bulk it turns off. On the CCGX I see Fault but nothing else, no alarm no BMS error. The strange thing is that when plugged in it gives a very low chirping noise.
After a number of restarts or woodoo magic, it starts working again for a while