Controller puzzle - Float for LFP on solar (long post)

Set the float voltage to 13.2 - 13.3V. This is the resting voltage of your batteries and with the float set this low it will carry the parasitic loads on the batteries, but will not charge the batteries beyond about 30% SOC.

You want to set the boost reconnect higher as well, or the charger will never go back into charge unless the battery is completely flat. Otherwise the settings look good.