Well I just got off the phone with Xantrex support. The guy on the other end couldn't get me off the phone fast enough. Anyway, I've got a Xantrex Prosine 2.5 which is throwing error code 206. Xantrex immediately stated that it was not fixable. $2,500 piece of junk now. I can say without doubt, I will never purchase anything made by Xantrex again.