<div dir="ltr"><div style="font-size:12.8px"><span style="font-size:12.8px">Hello Wrenches,</span></div><div style="font-size:12.8px"><span style="font-size:12.8px"><br></span></div><div style="font-size:12.8px"><span style="font-size:12.8px">As several Wrenches notices, Enphase did recently perform an</span><span style="font-size:12.8px"> optimization firmware update to a subset of legacy products for which it was unintended. This caused a minor delta in energy-production on some units. The problem was quickly identified and we worked diligently to correct the issue. We sent out firmware updates to the affected sites on Friday, which should have corrected these issues. We apologize for any inconvenience this has caused.</span></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Feb 8, 2016 at 8:25 AM, Louis Woofenden <span dir="ltr"><<a href="mailto:louis@woofenden.net" target="_blank">louis@woofenden.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"><br>
FYI, our affected systems with Enphase M190s are back to normal as of
Saturday morning. I hope that's the case for others as well.<br>
<br>
Cheers,<br>
Louis<div><div class="h5"><br>
<br>
<span>Rebecca Lundberg wrote:</span><br>
<blockquote type="cite">
<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">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.'<br><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Rebecca<br></div><div class="gmail_extra"><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
<br>
From: RE-wrenches [mailto:<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>]
On Behalf Of Louis Woofenden<br>
Sent: Wednesday, 03 February, 2016 11:48<br>
To: RE-wrenches<br>
Subject: Re: [RE-wrenches] Enphase M190 current limiting<br>
<br>
<br>
Hi Rebecca and all,<br>
<br>
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.<br>
<br>
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.<br>
<br>
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.<br>
<br>
Best,<br>
Louis<br>
<br>
--<br>
<br>
Louis Woofenden<br>
Engineering Director<br>
Net Zero Solar, LLC<br>
101. W. 5th St., Tucson, AZ 85705<br>
Arizona ROC #248710, 259756, 259521<br>
<br>
Phone: <a href="tel:520.207.4053" target="_blank"><tel:520.207.4053></a> <a href="tel:520.207.4053" value="+15202074053" target="_blank">520.207.4053</a> Ex. 2<br>
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Cell: <a href="tel:520.237.5040" target="_blank"><tel:520.237.5040></a> <a href="tel:520.237.5040" value="+15202375040" target="_blank">520.237.5040</a><br>
Fax: <a href="tel:520.203.7230" target="_blank"><tel:520.203.7230></a> <a href="tel:520.203.7230" value="+15202037230" target="_blank">520.203.7230</a><br>
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Luke Christy wrote:<br>
<br>
<br>
<br>
Hi Rebecca,<br>
<br>
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.<br>
<br>
This seems like a pretty big deal in terms of potential lost production
for a lot of users.<br>
<br>
<br>
<br>
Have you brought this up with Enphase?<br>
<br>
<br>
<br>
-Luke<br>
<br>
<br>
<br>
<br>
<br>
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Solar Gain Services, LLC<br>
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Monte Vista, CO 81144<br>
<a href="mailto:sgsrenewables@gmail.com" target="_blank">sgsrenewables@gmail.com</a><br>
<a href="tel:719.588.3044" value="+17195883044" target="_blank">719.588.3044</a><br>
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<br>
On Jan 31, 2016, at 21:08, Rebecca Lundberg <<a href="mailto:rebecca.lundberg@powerfullygreen.com" target="_blank">rebecca.lundberg@powerfullygreen.com</a>>
wrote:<br>
<br>
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.<br>
<br>
Sincerely,<br>
<br>
<br>
Rebecca Lundberg<br>
Powerfully Gree<br>
<br>
? n?<br>
<br>
Minnesota<br>
<br>
<br>
<br>
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--<br>
--<br>
<br>
Louis Woofenden<br>
Engineering Director<br>
Net Zero Solar, LLC<br>
101. W. 5th St., Tucson, AZ 85705<br>
Arizona ROC #248710, 259756, 259521<br>
<br>
Phone: <tel:<a href="tel:520.207.4053" value="+15202074053" target="_blank">520.207.4053</a>> <a href="tel:520.207.4053" value="+15202074053" target="_blank">520.207.4053</a> Ex. 2<br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><br><div dir="ltr"><p style="margin:0in 0in 0.0001pt"><font size="2"><span>Cordially,</span></font></p><br><div style="font-size:13px;word-wrap:break-word">Nick Soleil<br></div><div style="font-size:13px"><span style="font-size:12.7273px;border-collapse:separate"><font style="font-size:small" color="#ff9900" face="Helvetica"><b>Enphase Energy</b> </font><font style="font-size:small" color="#000000" face="Helvetica">|</font><font style="font-size:small" color="#ff9900" face="Helvetica"> </font></span><span style="font-size:small;font-family:Helvetica">Field Applications Engineer</span><br></div><div style="font-size:13px"><font color="#000000" face="Helvetica"><br></font><div><span style="font-family:Helvetica;border-collapse:separate"><font color="#000000">office <a href="tel:%28707%29%20763.%204784" value="+17077634784" target="_blank">707-763-4784</a> x7267</font></span></div><div><span style="font-family:Helvetica;border-collapse:separate"><font color="#000000">cell 707-321-2937<br></font></span></div></div><p style="font-size:13px"><a href="http://enphase.com/" target="_blank"><img src="http://enphase.com/wp-uploads/enphase.com/2013/08/Enphase_logo_email.jpg"></a></p><div style="font-size:13px"><br></div><p style="font-size:13px;margin:0in 0in 10pt"><a href="http://ow.ly/HbVS3" target="_blank"><font color="#000000"><b style="font-size:large">Powering What’s Next</b><font face="arial, helvetica, sans-serif">™</font><font size="4"><i> | </i>The Enphase Energy Management System</font></font></a></p><font style="font-size:13px" face="arial, helvetica, sans-serif"><span style="line-height:14.7200002670288px"></span></font><p style="margin:0in 0in 0.0001pt"><br></p><p style="margin:0in 0in 0.0001pt">NABCEP Certified Solar PV Installer #03262011-300</p><p style="margin:0in 0in 0.0001pt">California C10 Licensed Electrician #986315</p><p style="margin:0in 0in 0.0001pt">Texas Master Electrician #284451<br></p><p style="margin:0in 0in 0.0001pt"><span></span></p><p style="margin:0in 0in 0.0001pt"><span></span></p><p style="margin:0in 0in 0.0001pt"><span></span></p><span></span><p>“Don’t get me wrong: I love nuclear energy! It’s just that I prefer
fusion to fission. And it just so happens that there’s an enormous
fusion reactor safely banked a few million miles from us. It delivers
more than we could ever use in just about 8 minutes. And it’s wireless!” <br></p><p>- William McDonough
<span></span></p></div></div></div></div></div></div>
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