Mac, SMA tech support told me this usually indicates a failing transformer so as Marco suggests, the patient does not have long to live. I've seen a couple of these at 10+ years of service on the inverter.
Was kind of regards Carl Adams SunRock Solar On Sun, Jan 9, 2022, 12:50 PM Mac Lewis <maclew...@gmail.com> wrote: > Hello Wrenches, > > I've got a customer that has an issue with their ~10 yr old SB8000US > connected to a quad stack of Sunny Island system that's off-grid. > > It looks like it's on and off, trying to make power but seems to think > there is a problem on the AC side. Do you have any advice as to what may > be going on? Anything that I can do that may not require replacement? > Very tough communicating to SMA while on site and of course, this always > happens on Friday night. > > Thanks! > > -- > > > > Mac Lewis > > *"Yo solo sé que no sé nada." -Sócrates* > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > 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/re-wrenches@lists.re-wrenches.org/ > 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: > http://www.members.re-wrenches.org > >
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