I have had that happen before on at least 3 different occasions. Specifically with the fm100. Totally random and couldn't come up with a logical explanation. I just reprogram and roll with it...always seemed odd though.
On Fri, Jan 9, 2026, 2:58 PM Zeke Yewdall via RE-wrenches < [email protected]> wrote: > Has anyone else had issues with outback charge controllers resetting to > default settings? I just had a FM100 do this (and shut the whole system > down because the default settings were too high of voltage for a 15 cell > LFP, so the battery turned itself off for protection). The logs show that > the values were set to 0 from the proper settings, then to the default > settings from 0, on site. But no one was on site. I changed them back > remotely via opticsRE, and it logged me as changing them back, as it should > have. > > Occasionally in the past I've had similar things happen, and always kind > of chalked it up to the customer perhaps messing with the system, but this > time I know that no one was there to adjust it locally at the time that it > says it was changed. > > I have another site this week that does not have opticsRE, that the FM100 > may have reset to default settings as well. Same thing -- lithium > batteries shutting off from overvoltage all of a sudden. I am still > investigating that one. > > Zeke > > -- > Zeke Yewdall > PV Engineer > NABCEP #031508-89 > [email protected] > 303-523-3592 > _______________________________________________ > 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 > >
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