Re: [Re-wrenches] Fortress CTs

[Jay]

Are the G series the edge on duo? Are they also made by LUX power?  Jay On Nov 7, 2026, at 2:54 PM, Kirk Herander <kirkh@vermont.solar> wrote:  I'm about to set these G series inverters up for zero export. The PV / batteries will be used to backup the grid, at least for now, since its not permitted to sell back, at least not yet. I do have some supposed knowledge on how Fortress zero export is to work, and I hope it works as explained to me. Are you having issues with that function? That's another silly thing: installer credentials. I was approved as an installer several years ago, and my created account logs into the service page, but access is limited to other things. To my knowledge I have no installer number. My trouble with the PRO app is that I can not get past the "enter user email" registration page regardless of what address is typed in. Even the "skip for now" button gives me the same error and hangs it up. Unfortunately my screenshot cut off the message, so I have to recreate it when back on site for the fortress tech to examine. I suspect it's a simple issue, but no docs can tell me how to move past it. On Sat, Nov 7, 2026 at 5:21 PM William Miller <will...@millersolar.com> wrote: Kirk: I feel your pain. The commissioning is tedious. I did not have an installer number at first but I do now. Make sure you have that.  You have to disable auto log-in to get to the new system button. I suspect you are past those hurdles.  When filling out the fields you have to click way over on the right to enter information. That entry right-justifies and fills out from the very right edge of the field. Very non-intuitive.  I try to commission these myself but I always have to call for help. One time one of the techs got in a big argument with me because I designed a system with a generator. He told me he knows more about sizing a system than me. Later he apologized. Other than that the tech support has been darn good with good answers and good follow up.  There are so many settings my eyes glaze over. I have studied them for hours. The terms and philosophies are different from Outback, Schneider and other legacy brands.  I'm still not satisfied with my zero export setup. If anyone is familiar with doing this on an Envy id love to talk.  Good luck.  William Miller On Sat, Nov 7, 2026 at 12:51 PM Kirk Herander <kirkh@vermont.solar> wrote: William, Have you installed a duo 21-G model inverter yet? This is a new version in which the dongle is merged with internal guardian hardware. I'm in the middle of a  -6- duo-G set up and it's been so frustrating to say the least to register These new inverters using the Fortress Power Pro app. The old envy app does not work with the guardian dongle. Anyway, I finally surrendered to writing a service ticket up, and they're gonna get on the phone with me. I hope sometime next week. I am presently stuck on the registration, even though everything on site is running fine, because of the silly clunker of a power pro app, which they want to migrate everything to.  And my customers who actually have old guardians can't get on their sites anymore either. I guess they have to reconnect in front of the inverter using the new Fortress home app before they can see their sites again. Wondering if you or anyone else has experienced installing this new inverter with the guardian dongle to this point. And the old envy app still works, however, they have not gotten to merging it into the power pro app so you can see all of your sites in power Pro, Which apparently is the ultimate goal. I like Fortress and that's why I use them as my go to all in one, however I've complained about this for a couple of years of very poor and incomplete documentation. And little or any  application notes on particular tasks you're trying to do. At least for an old man like me to comprehend first time around. Ps - I am connected to a 600 amp utility service. And it worked like a charm to change the CT ratio to 6000:1 and use 600V/100 mA CT's. On Sat, Nov 7, 2026 at 2:27 PM William Miller <will...@millersolar.com> wrote: Friends:   I keep learning about this subject.  The Envy8 comes with small CTs that are 1000:1 ratio.  The Envy 12 has bigger CTs that are 3000:1.  I was originally told the bigger CTs could not be used on the Envy8.  It turns out there is a setting to select 3000:1 so you can use the bigger CTs on the Envy8.   I am really liking the Fortress product line, both batteries and inverters.  The support has been great and the product is solid.     William Miller   _______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: https://lists.re-wrenches.org/mailman/options/re-wrenches_lists.re-wrenches.org/ There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ https://lists.re-wrenches.org/pipermail/re-wrenches_lists.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 <noname> Kirk Herander / kirkh@vermont.solar Owner|Principal, VT Solar, LLC Celebrating our 35th Anniversary 1991-2026!! dba Vermont Solar Engineering 802.559.1225 -- <mime-attachment.png> Kirk Herander / kirkh@vermont.solar Owner|Principal, VT Solar, LLC Celebrating our 35th Anniversary 1991-2026!! dba Vermont Solar Engineering 802.559.1225 _______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: https://lists.re-wrenches.org/mailman/options/re-wrenches_lists.re-wrenches.org/ There are two list archives for searching. 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