Damaged batteries consuming power? William Miller www.millersolar.com
> On Jul 18, 2021, at 12:26 PM, jay <jay.pe...@gmail.com> wrote: > > HI All, > > I”m trying to diagnose the following system I didn’t install. > > 4 year old system grid tie battery back up. > > Radian 4048 > flexmax 80 > 3500 watts PV > fndc > it is on opticsRE > > The symptoms are that its not selling much at all. Mostly when it is about > 1kw max PV production and .8kw selling. I have disconnected the FNDC and > after that it did seem to work better. > > Usually it will sell a bit, then buy a bit then sell and so on. Grid voltage > is very constant at around 246vac. > > I’ve been through the settings a few times with tech support, made > adjustments and for a while it was selling pretty normally, but again today 0 > production, CC is at float. > > I have not been to the site, I was just trying to do this all by optics. But > I’m going to have to go. I think there are 3 possible issues. > > 1. the customer has always thought the production is low. And from what I’ve > seen that is true. This is in a very sunny place, no shade so with 3.5kw, > 1kw is very low which I think they may have a few strings of the array are > not connected. However why that bothers me is that the VOC/VMP voltages are > too close in looking at the CC. Which leads me to think its been told to > back off to the 1.0kw, by some setting, see #2. And its always around .8 > selling and around 1kw output from the array. > > 2. There is a programing issue. > > 3. There is a hardware issue. > > > If someone wants to look at the site, I have the info and they can log in. > Or if they want to provide settings for me to triple check, that would be > great > and > if they have any ideas as to why its acting like it is, very much appreciated > So far even though tech support has viewed in on Optics and have had some > recommendations as to settings, its not fixed the issue. > > thanks in advance, > > jay > > peltz power > > > > > > > > _______________________________________________ > 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 > _______________________________________________ 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
