Last year we serviced a system with a QCell with that the manufacturer deemed a “defective junction box”. Photo attached. I had never seen this before. Scary stuff. Luckily, on a ground mount in the middle of a field. Good reminder about DC arc fault mitigation.
On Fri, Nov 6, 2020 at 3:00 PM Jason Szumlanski < [email protected]> wrote: > 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> >> >> _______________________________________________ > 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 > > 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 > > -- Chris Sparadeo C_802-369-4458 H_802-728-3059
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