New converter PD4655 doesn't go into boost mode Part 2

I'm assuming the battery monitor is measuring the voltage at the battery. To diagnose the converter you have to measure the voltage at the converter's DC terminals, which is the only data it uses to set the charge mode. The converter has absolutely no clue what the voltage is at the battery, or what the battery state-of-charge is. The SOC is algorithm-guessed based on the voltage at the converter.