Thanks;
I have mine set for USE, 19 (Absorption) for 56 and 20 (Float) for 54V. If I don't have any significant loads running there are periods of time when battery has hit Absorption setpoint, and then has been in float for a long while then the inverter will at times stop charging. I have tried to determine what prompts it to resume without success but the good news it does resume. Sometimes the same day, always by the next.
The reason I have my setpoints lower is that I am often away and have read that it is better not to push every last possible electron into LiFePO4 batteries when that extra storage is really not needed. In other words I am keeping mine 98% fully charged rather than 100%