Millermatic 350p

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Can anyone help me with my Millermatic 350p, Ive had this machine stored in my garage for over 3 years without using it. I last used it running it on 460v, but now I have 220v power only. I switched the board over to 220 option, but when I switch it On it gives me a help 7 error? Any ideas what it could be?Sent from my iPhone using Tapatalk
Reply:By 460v I'm assuming 3 phase. Is the 220v single or 3 phase? For single phase the red wire isn't used, just white, black and green.
Reply:https://weldingweb.com/vbb/threads/7...code-7-voltageMiller Multimatic 255
Reply:Look at page 20. DO NOT use the red conductor  https://www.google.com/url?sa=t&rct=...iKhIVaGmLcPl-9Miller Multimatic 255