<div dir="auto"><div>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. </div><div><br></div><div data-smartmail="gmail_signature"><br> </div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, Jan 9, 2026, 2:58 PM Zeke Yewdall via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>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.</div><div><br></div><div>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.</div><div><br></div><div>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.</div><div><br></div><div>Zeke</div><br><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr">Zeke Yewdall<div>PV Engineer</div><div>NABCEP #031508-89</div><div><a href="mailto:zeke@darkforestsolar.com" target="_blank" rel="noreferrer">zeke@darkforestsolar.com</a></div><div>303-523-3592</div></div></div></div></div></div>
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