Hi William I suspect a problem inverter, not a comm issue.
If removing #3 stops the problem, then I’d move the #3 inverter into #2 slot and see if the problem still exists. If yes then It might just be one of the power modules inside #3. Or could be the control stack. I had a single power module failure that was kinda hard to isolate but when replaced all is fine. At first OB thought it was control stack, but after that didn’t fix it, we replaced one module. If all of the above still doesn’t seem to fix it or it’s still unclear then I would replace the hub. Yea seems crazy but. Jay > On Sep 3, 2019, at 5:27 PM, William Miller <[email protected]> wrote: > > Friends: > > The message below never got posted to the Wrenches list. I don't know how > the list works but sometimes there is a quite a delay. > > I am still in need of advice. The problem went away mysteriously and then > came back. I can make the problem go away by unplugging the data cable to > inverter 3, but this can't be a permanent fix. Outback has not a clue on > what is going on... > > Any help is appreciated. This problem is causing me a headache and a > black-eye.... > > William > > > Friends: > > We have a 3 stack Radian system installed about two years ago. The > customer had some health issues and is just moving into the new home. > > Over the weekend the system started strobing the AC output. One or more of > the inverters was clicking and buzzing. > > Tech support diagnosed a faulty setting for power save. We adjusted as > recommended but problem persists. > > On site, I found the clicking from transfer relays and a pop-buzz from one > or both power units on inverter 3. When I unplugged the data cable to that > inverter the noises stopped. > > The inverter data cables are all new about 2 months to resolve the > dreaded firmware mismatch problem. They are not shielded. I tried a new > factory shielded cable on 3 but problem persists. > > I have been holding all morning for tech support. BTW pressing 2 for > call-back does not work. > > Any help would be appreciated. I am stuck on site until this is > resolved.... > > William Miller > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
