I need to stick weld with the sync 250 and I get help 11 when I start in dc+. I can start in dc- or ac with no problem. I set my process switches for stick welding in dc-, turn off the machine, switch to dc + and restart. All process lights are unlit and I get the help 11. {output selector switch is not in correct position**
Any help would be much appreciated.

The machine will stick weld in dc- and ac, just can't get dc+ to work.