Kris, Im guessing your issue may be in relation to high inrush current from loads?
Have you tried setting the AC input current limit lower than 50A to experiment? Just a thought. Roy Rakobitsch On Sat, Feb 28, 2026, 11:14 Kristopher Schmid via RE-wrenches < [email protected]> wrote: > Hello fellow wrenches, > > I have a legacy grid tied outback system that is throwing an IN AC Current > Too High error followed by an IN AC Current OK message very regularly. I > recently replaced the dead FX3648 with a new VFXR3648A. The original > system installer did not install a Mate. The new inverter said that it > required a Mate3S. I was unable to source a new one at installation time > (backordered), so I put in a used Mate3S that I had on the shelf. > > I found an old thread on the Outback User Forum from 2012 that mentions > this issue, but it didn't seem to indicate a definitive solution. It > suggested that it was potentially a firmware issue. I had the client try > to ACK ALL in the events menu, but the inverter still showed a red error > light along with the repetitive error beeping. I also had the client > verify that the Grid Input AC Limit matched the Grid Input breaker size (50 > A). > > This site is 2 hours drive and I am waiting on Wattsun engineering to > provide a replacement azimuth motor solution for the tracker. I would like > to have a solution to this inverter issue in my back pocket when I make the > trip to replace the tracker motor. > > Anyone know the current state of Outback Tech Support? > > Any help is greatly appreciated, > Kris > > > Shine On! > > Kris Schmid > Legacy Solar, LLC > 137 W 1st Ave > Luck, WI 54853 > www.legacysolar.com > 715-653-4295 > NABCEP Certified PV Installation Professional > Licensed Wisconsin Master Electrician > BSEE > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: >
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