I have yet to get a flexblock to work in boost mode. Had to resort to getting MeanWell units. I like that the Flexblocks are quite small in relation to the Meanwell drivers, but tow out of two are inop. I followed the wiring methods and example with no luck. Any thoughts? Thanks!
How many series connected LEDs are you trying to power? Are you sure that the input voltage to the driver is LESS than the total forward voltage of all series connected LEDs? Vin < (2V * No of LEDs in series)