Latest update. Still no change with full sun. At lease I know that the panels will defrost by themselves. Array voltage = VOC. Anyone have a winterized
On Fri, Dec 13, 2024 at 11:33 PM John Blittersdorf < [email protected]> wrote: > Now that I am getting some data from the island with the old system > keeping power up for 6 plus hours....(.started with 2 hours and now with > full sun 6 hours. I see on Event History that the FM100 is continually bulk > charging then Not charging every minute No actual power produced but > sometimes the bulk charging will continue for several minutes and the FM100 > status shows bulk charging at 45 to 50 watts regardless of what the array > voltage is., then goes back to silent. Has anybody seen this before? > Tomorrow is supposed to be sunny so I should see more power if the problem > is in fact snow or ice on the array. We had a lot of rain so I had assumed > that any snow would have washed off but then here on the mountain we got > some sleet and then 2"of snow that I had to scrape off my array. All the > solar farms around here have cleared of snow so I can't believe that snow > cover is the problem. > > Yesterday I took the FM100 with the arc fault problem that I had put aside > to deal with later, removed the arc fault circuit board and then installed > it in my system in place of my FM100. It works just fine. I just installed > two FM100's and Radian in a new mountaintop off-grid system and another > going in this week on a grid tie backup system. Both are pole mount racks > for the solar. I probably should pull the circuit boards out of both of > those as they are unattended second homes with months of no use but they > are usually accessible after the snowstorms. > > John > > > .. > > On Wed, Dec 11, 2024 at 2:17 PM Kirk Herander via RE-wrenches < > [email protected]> wrote: > >> I had one stuck in silent a couple years ago. Was plain as day after some >> measurements that PV positive to ground showed the open circuit PV voltage. >> It had failed internally. A new charge controller fixed it. >> >> *Kirk Herander / **[email protected] <[email protected]>* >> >> *Owner|Principal, VT Solar, LLC* >> >> *Celebrating our 33st Anniversary 1991-2024!!* >> >> dba Vermont Solar Engineering >> >> 802.559.1225 >> >> >> On Wed, Dec 11, 2024 at 2:13 PM Luke Christy via RE-wrenches < >> [email protected]> wrote: >> >>> 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 >>> [email protected] >>> >>> On Dec 10, 2024, at 8:50 PM, John Blittersdorf via RE-wrenches < >>> [email protected]> 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: [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: >>> http://www.members.re-wrenches.org >>> >>> >>> _______________________________________________ >>> 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: >>> http://www.members.re-wrenches.org >>> >>> _______________________________________________ >> 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. 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