I have a 3 phase 230 volt 3 wire panel that has a 120, 120 & 208 volts phase to ground and 230, 230, & 230 phase to phase.The AC guy came and installed a new 208/230 volt 3 phase unit. He measured above voltages and told me since one of the voltages is 208 we have to fix that problem first. Do you think he is right ?
As far as I know since the unit is 3 phase 208/230 volt, we should be OK, could you please advice?

Thanks

Hamlet