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 <[email protected]> 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: [email protected] > > 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/[email protected]/ > 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 > *K**irk Herander / **[email protected] <[email protected]>* *Owner|Principal, VT Solar, LLC* *Celebrating our 35th Anniversary 1991-2026!!* dba Vermont Solar Engineering 802.559.1225
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