Thanks for the reply. I reported it to Enphase but have not heard back yet. Since one of these updates happened 5 months ago I was surprised the manufacturer hadn't notified installers in the interim before they did a more wide spread update, which is why I wrote to this list. I'm not in tech support, but seeing what it did to our inverter back 5 months ago I certainly wouldn't have continued the 'upgrade' and pushed that firmware update to the rest of the units! I think most people didn't notice so they just went ahead. I know MN temperatures are more extreme than other parts of the country so perhaps we've seen more failures than others have. But this site with 8 M190s was doing just fine before the 'update.'
Rebecca > > From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On > Behalf Of Louis Woofenden > Sent: Wednesday, 03 February, 2016 11:48 > To: RE-wrenches > Subject: Re: [RE-wrenches] Enphase M190 current limiting > > > Hi Rebecca and all, > > We're experiencing the same thing on several M190 sites, though not all. > Interestingly, M190s that have been replaced are not having the same > problem. > > According to Enphase, it is a software problem. My understanding is that > they are rolling back software updates on affected devices to solve the > problem, but I'm not clear on the exact order that will happen. > > Not sure if being a squeaky wheel on particular systems is going to hurt > or help. Kind of disappointing that they didn't properly beta test any > software updates on all types of microinverter devices before rolling them > out to all customers. Seems like that would be common sense. > > Best, > Louis > > -- > > Louis Woofenden > Engineering Director > Net Zero Solar, LLC > 101. W. 5th St., Tucson, AZ 85705 > Arizona ROC #248710, 259756, 259521 > > Phone: <tel:520.207.4053> 520.207.4053 Ex. 2 > > Cell: <tel:520.237.5040> 520.237.5040 > Fax: <tel:520.203.7230> 520.203.7230 > > NABCEP Certified PV Installation Professional? > NABCEP Certified Solar Heating Installer? > > > > Luke Christy wrote: > > > > Hi Rebecca, > > After you posted this I looked at the power production history for several > of our Enphase sites with M190s, and the same thing is happening. Inverter > output is being clipped at 140W across the board. > > This seems like a pretty big deal in terms of potential lost production > for a lot of users. > > > > Have you brought this up with Enphase? > > > > -Luke > > > > > > NABCEP Certified PV Installation Professional?: Certification #031409-25 > NABCEP Certified Solar Heating Installer?: Certification #ST032611-03 > CoSEIA Certified PV Installer > > Solar Gain Services, LLC > PO Box 531 > Monte Vista, CO 81144 > sgsrenewab...@gmail.com > 719.588.3044 > www.sgsrenewables.com <http://www.sgsrenewables.com/> > > > On Jan 31, 2016, at 21:08, Rebecca Lundberg < > rebecca.lundb...@powerfullygreen.com> wrote: > > I just noticed that several of our sites with Enphase M190s are current > limiting at 140 watts. These units used to clip at 199 watts so I feel like > our customers just lost a potential 30% of their power output. It appears > to be related to a firmware update 520-00008-r01-v01.08.00. We've got one > site with just 8 units, 1 of them got this firmware update back in > September and has been limiting to 140w since then, 5 of them got this > update in late January and have been limiting to 140w since then, the other > two are at a previous firmware version and are performing as we would > expect up to 199w. Have any of you noticed this same thing? Do you know > what this is about? It doesn't feel very fair on the user end of things. > > Sincerely, > > > Rebecca Lundberg > Powerfully Gree > > ? n? > > Minnesota > > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > > > -- > -- > > Louis Woofenden > Engineering Director > Net Zero Solar, LLC > 101. W. 5th St., Tucson, AZ 85705 > Arizona ROC #248710, 259756, 259521 > > Phone: <tel:520.207.4053> 520.207.4053 Ex. 2 > > Cell: <tel:520.237.5040> 520.237.5040 > Fax: <tel:520.203.7230> 520.203.7230 > > NABCEP Certified PV Installation Professional? > NABCEP Certified Solar Heating Installer? > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20160204/030202bc/attachment.htm > > > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: not available > Type: image/png > Size: 152751 bytes > Desc: not available > URL: < > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20160204/030202bc/attachment.png > > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > ------------------------------ > > End of RE-wrenches Digest, Vol 9, Issue 51 > ****************************************** >
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