I have a client with one QCell 260W module that has been installed for a few years now and has (apparently) had a bad diode since inception (determined via microinverter readings). We concluded with the (thankfully reasonable) homeowner that it isn't worth the expense to investigate further or pursue warranty coverage.
Other than that, no issues, but I have not installed a QCell in at least 2+ years. Jason Szumlanski On Thu, Nov 5, 2020 at 11:27 PM AE Solar <[email protected]> wrote: > Wrenchers, > Wondering if anyone has had any experience with bad diodes in QCell > panels. Two of our projects this summer had panels that were putting out > half of their rated voltage. At first it seemed like it was a defect from > the factory, and it was caught upon commissioning the system, but I'm now > seeing that another panel has gone bad about two months after install. I've > spoken with a few distributors and they said they haven't heard anything > about this being a pattern. I'm in the RMA process with QCell, and don't > feel like I'm getting complete transparency from them. So far we have 8 > defective panels out of 300. It was in two different projects that were > months apart. I'm not sure if they were from the same shipment or not. All > of them were Q.PEAK DUO 400 watt panels. Interested to know if anyone > else is having similar experiences? Thanks for any thoughts. > Adam > > Adam Katzman > Autonomous Energies > PO Box 1245 > Kingston, NY 12402 > www.autonomousenergies.com > <https://mailtrack.io/trace/link/5a7d1d523883bb9a2d93a32c368331a49c63f51f?url=http%3A%2F%2Fwww.autonomousenergies.com&userId=1613865&signature=a0c8c76e5fb183fe> > (518) 567-1468 > > _______________________________________________ > 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 > <https://mailtrack.io/trace/link/3fb36e05df00cf9abfa05e29c1514c6253eb4ecd?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=2486d58fb0408fbf> > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > <https://mailtrack.io/trace/link/f743319663de3878889565091ef7729f4c42ade1?url=https%3A%2F%2Fwww.mail-archive.com%2Fre-wrenches%40lists.re-wrenches.org%2F&userId=1613865&signature=fdc278148b55f310> > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > <https://mailtrack.io/trace/link/863ae566845f6275731c0727397097412903a952?url=http%3A%2F%2Flists.re-wrenches.org%2Fpipermail%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=002df76fcd6fd916> > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > <https://mailtrack.io/trace/link/16a93740e0656ef405a8e6e6af6d8d9bd0174928?url=http%3A%2F%2Fwww.re-wrenches.org%2Fetiquette.htm&userId=1613865&signature=5f02a9f003cc4bde> > > Check out or update participant bios: > http://www.members.re-wrenches.org > <https://mailtrack.io/trace/link/59807045d2be38a4c624e3f64f84abae23863564?url=http%3A%2F%2Fwww.members.re-wrenches.org&userId=1613865&signature=ac09b0d7883ae5bc> > >
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