<div dir="ltr">I once did an install with eight 12Ks. Upon commissioning the system would throw a parallel fault and shut everything down. After a huge amount of time spent, going round and round with Sol-Ark we figured out that three of the inverters were 8Ks mislabeled as 12Ks. No worky!</div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, Mar 20, 2025 at 2:54 PM Dave Tedeyan 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:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="auto">Hi All,<div dir="auto"><br></div><div dir="auto">I have just gotten myself into a pickle and so am posting this both as a note/warning too all, as well as seeing if anyone has tried this.</div><div dir="auto"><br></div><div dir="auto">I installed a small system with a Sol-Ark 12k a few years ago. The customer recently asked us to add some more power. An 8k was more than enough, so we went with that. It turns out that Sol-Ark will not support paralleling two of their inverters that are different sizes. They say that the firmware needs to be exactly the same, and you cannot put the same firmware on an 8k and a 12k. </div><div dir="auto"><br></div><div dir="auto">In this instance, I would be fine effectively turning the 12k into an 8k if that is even possible. I called tech support and once they noted the model mismatch, they basically said that they cannot support the setup and would not help me work with it. They would not even update the firmware on the original 12k to see if it would play nicely with the 8k.</div><div dir="auto"><br></div><div dir="auto">I am wondering if anyone here has run into something like this before? If I were to get both inverters updated to the newest firmware, might they actually talk okay? Barring that, it seems that there are two options. First would be to take the inverters out of parallel and have them each run their own set of loads. Unfortunately that is not possible on this site due to where the loads are in relation to the inverters. The other option is to buy a new 12k inverter and try to sell the "very lightly" used 8k. </div><div dir="auto"><br></div><div dir="auto">It seems that the two inverters share the same box. Is it possible to just swap out a board in the inverters to turn the 8k to a 12k (or the other way around).</div><div dir="auto"><br></div><div dir="auto">I'd appreciate any info folks have out there about this situation.</div><div dir="auto"><br></div><div dir="auto">Cheers,</div><div dir="auto">Dave</div></div>
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<p style="margin:0px;font:18px Helvetica">Michael Morningstar </p><p style="margin:0px;font:18px Helvetica"><br></p><p style="margin:0px;font:18px Helvetica">Morningstar Electric Inc</p><p style="margin:0px;font:18px Helvetica">PO Box 1494</p><p style="margin:0px;font:18px Helvetica">Mount Shasta, CA 96067</p><p style="margin:0px;font:18px Helvetica">530-921-0560</p><p style="margin:0px;font:18px Helvetica">CSLB 1116835</p><p style="margin:0px;font:18px Helvetica"><a href="mailto:mjmorningstar@gmail.com" target="_blank">mjmorningstar@gmail.com</a></p><p style="margin:0px;font:18px Helvetica"><br></p></div></div>