Remember please, on this unit there is an INTERIOR voltage decision that has to be made as well the link board, when I say interior, I am directing you to the control box settings inside/behind the fold down front display panel, this ALSO has to be set to the higher range voltage for everything to sync up. This should solve your voltage issues.
Caution please don't get hung up on rather or not your making 460 or 480 your pump will not care .. the neutral voltage will be 265/277 respectively to 460/480 or the Square root of of 3 divided into your 460/480 or whatever your line to line voltage turns out to be, this is where you see the 240/416 combination so often shown. NOTE: 240 is not a sum of 120 and 120 single phase as it is sometimes proffered.
In 3 phase voltage situations the Sq of 3 is 1.732 [rounded] this is why the sum of the 120 voltages make it 208 line to line and not 240. The caution here in this sequence if you turn up your L-L voltage to reach 240 you are also making near 138 neutral voltage and your 120 equipment will very likely go "poof" and all the smoke comes out of all your crap that is plugged in... let us know please ?? BEST: mac/mc