This is a timely thread. Thanks to all for your input. I also have a site with a problematic FM100. The system has 2x FM100s and every morning one of them has required a manual power cycle by the client to get it to start producing. I can get no data remotely through Optics that indicates what’s going on other than that the device just stays in silent mode after it shuts down at the end of the production day. I went down some rabbit holes related to installing a fixed resistor on the BTS sensor circuit to set the measured battery temp at 25º C vs leaving the sensor unconnected with the lithium battery bank. There were some threads on the NAWS forum that indicated ghost temp values from unconnected BTS sensors might a source of the problem. I’m not sure why I didn’t think of the AFCI card as possible cause also. Thankfully I have some spare new FM100s on hand. Looks like a trip out there to swap the device and pull some AFCI cards.
I continue to be dismayed at the situation with Outback. I can’t really see them coming back to the market in an incarnation that we will recognize. - despite the various reports to the contrary. I hope I’m wrong. At least (for now) they are still supporting the Optics platform. Luke Christy Renewable energy consultant NABCEP Certified PV Installation Professional™: Solar Gain Services, LLC PO Box 531 Monte Vista, CO 81144 719.588.3044 sgsrenewab...@gmail.com > On Dec 10, 2024, at 8:50 PM, John Blittersdorf via RE-wrenches > <re-wrenches@lists.re-wrenches.org> wrote: > > HI Wrenches, > I have an off grid site on an Island on auto pilot for the winter with no > access. The FM 100 > has remained in Silent mode even when the Array Voltage is around 150 Volts > and battery at 46V > I did get a response from Outback Tech support but they couldn't figure out > what happened. > I suspect that there is a ground or arc fault error which locks it up til > manually recycled. The problem is that there is no indication found on > Optics that there is a ground fault. > We would be totally in the dark except the original small solar array with an > Apollo CC with > about a kilowatt of solar has been dribbling in enough power to keep above > low battery cutoff > for a few hours each day. The system was up when I was on the tech support > call but has since quit for the day. Has anyone seen this before? > > John Blittersdorf > > _______________________________________________ > 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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