Ray,
I just saw the same sort of thing on 2-year-old Peimar modules. In my case,
there were visible hot spots that had burned through the backsheet in several
places on several modules. In some places it was just small blisters, in others
there was a clearly melted area of the backsheet. The hot spots seemed clearly
associated with the cells that had cracks, but they were always at the edges
and corners of cells. Unfortunately I did not have access to an IR camera to
view them under load in the sun.
The manufacturer replaced them under warranty, but I’m not pleased with these
modules at all.
-Luke Christy
NABCEP Certified PV Installation Professional™:
Solar Gain Services, LLC
PO Box 531
Monte Vista, CO. 81144
[email protected] <mailto:[email protected]>
719.588.3044
www.sgsrenewables.com <http://www.sgsrenewables.com/>
>
> Hi All;
>
> I've had a colleague ask that I post a couple pictures of what appears to be
> cracks in cells under the glass. The glass is not damaged. These are Sun
> Edison modules, so apparently no warranty. Has anyone seen this, and are
> these possibly dangerous (hot spots) or is this nothing to worry about? An
> Infrared camera did not show any issues.
>
> As always your invaluable input is always appreciated.
>
> Thanks,
>
> --
> Ray Walters
> Remote Solar
> 303 505-8760
>
>
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