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!
On Thu, Mar 20, 2025 at 2:54 PM Dave Tedeyan via RE-wrenches < [email protected]> wrote: > Hi All, > > 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. > > 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. > > 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. > > 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. > > 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). > > I'd appreciate any info folks have out there about this situation. > > Cheers, > Dave > _______________________________________________ > 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 > > -- Michael Morningstar Morningstar Electric Inc PO Box 1494 Mount Shasta, CA 96067 530-921-0560 CSLB 1116835 [email protected]
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