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.
Cheers,
Louis
Rebecca Lundberg wrote:
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
<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 <mailto:sgsrenewab...@gmail.com>
719.588.3044 <tel:719.588.3044>
www.sgsrenewables.com <http://www.sgsrenewables.com>
<http://www.sgsrenewables.com/>
On Jan 31, 2016, at 21:08, Rebecca Lundberg
<rebecca.lundb...@powerfullygreen.com
<mailto: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
<mailto: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
<http://www.re-wrenches.org/etiquette.htm>
Check out or update participant bios:
www.members.re-wrenches.org <http://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 <tel:520.207.4053>> 520.207.4053
<tel:520.207.4053> Ex. 2
Cell: <tel:520.237.5040 <tel:520.237.5040>> 520.237.5040
<tel:520.237.5040>
Fax: <tel:520.203.7230 <tel:520.203.7230>> 520.203.7230
<tel: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
<mailto: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
<http://www.re-wrenches.org/etiquette.htm>
Check out or update participant bios:
www.members.re-wrenches.org <http://www.members.re-wrenches.org>
------------------------------
End of RE-wrenches Digest, Vol 9, Issue 51
******************************************
_______________________________________________
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
_______________________________________________
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
