Ah, tech support's dreaded "blaming it on the comms." Enphase sent me down that rabbit hole for a few hours of wasted time.
Yes, this site has terrible interference issues, but that doesn't stop the micros from eventually getting good comms and reporting data regularly, if not slightly delayed. It doesn't explain power production dropping off. I was able to prove definitely that it wasn't a comms issue because the production CT reading and sum of the microinverter measurements were the same. Jason On Mon, Nov 1, 2021, 6:53 PM jay <[email protected]> wrote: > HI Jason, > > I had a neighbor replace his old units under the exchange program. less > than 1 month later 1 appeared to die. Tech support said without hesitation > it was the panel that died. I got called in and the unit was producing > power but comm’s were out. These were the 190’s. > > More haggling later ( on my neighbors part) and they got sent a new > inverter. > Photo with clamp on meter wasn’t good enough, he had to switch a number > around to somehow convince enphase. Fortunately they are a tilted on a > flat roof, so it was kinda easy, but a total waste of time. I don’t blame > the tech support person, I blame the higher ups who tell them what to say, > and how to trouble shoot. Muppets > > Please let us know which versions and I presume that you tested them for > output? > > Jay > > peltz power > > > > On Nov 1, 2021, at 4:30 PM, Jason Szumlanski < > [email protected]> wrote: > > We have a site with 34 microinverters at two orientations. It's a couple > of months old. After about a month a couple of microinverters started > acting up and dropping power production for no apparent reason, then > finally started throwing Device Produced No Power issues and totally sopped > producing but continued communicating. Slowly but surely additional units > have dropped off. Now a few weeks later we have 24 of the 34 units with the > same issue. Ten random units are completely fine. These are on various > branch circuits and both orientations. There is no rhyme or reason to this > issue that I can see. > > I have never seen such a widespread failure on a single site (since the > M190) and we are not seeing failures of the IQ7A at higher than usual rates > on any other site. It seems almost impossible that we got a bad batch and > haven't seen a bunch of failures at at least one more site (it's more than > a box full of quantity 18 but less than 36). > > Enphase Tier 2 tech support was no help at all (many many hours on the > phone, on hold, etc, no real answers). It was supposedly escalated to a > higher level, but I never heard back. I finally gave up and just demanded > that they replace them all. I'm concerned that there is something else > wrong here and might be wasting my time replacing 2 dozen units. We > replaced two today and for the last half of the day they seemed to work > flawlessly, but for how long they will continue to work is anyone's guess. > > Needless to say, the client is quite concerned. > > If you have had any similar experiences I would love to hear the > resolution. > > > Jason Szumlanski > Florida Solar Design Group > > _______________________________________________ > 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 > > > _______________________________________________ > 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 > >
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