[RE-wrenches] warranty exclusions

Rebecca Lundberg rebecca.lundberg at powerfullygreen.com
Sat Oct 25 12:24:11 PDT 2014


Recent
​ experiences with​
field failures as well as new manufacturers (with no
​ prior​
experience) coming to town because of a local incentive have made me look
more closely at the manufacturer's printed warranties. I am curious what
you think of these two warranty exclusions --

​(​
Excerpt from
​a module manufacturer's ​
warranty quoted here:
​)​


"  The Limited Warranties do not apply to any of the following:

- Damage caused by nonuniform sunlight on the PV modules produced by
artificially concentrating sunlight or excessive shading of the PV modules.

- Product which has been moved from its original place of installation
(including but not limited to any installation, application, repair,
servicing, or temporary removal) by any party not authorized in writing by
...  "  (manufacturer's name removed)

​(​
End of quote.
​)​


In the first item above I
​understand the part about concentrating sunlight, but the product is not
warrantied if the manufacturer deems the site unsuitable because of
shading? Of course we try to put modules in full sun, but what is
excessive? Shading from a dormer? A higher roof shading a lower roof part
of the day? Uneven snowshed? (This would also stress bipass diodes, but is
of course out of our control)

The second item would imply that removing and reinstalling the array for a
re-roof would void warranty unless we got an authorization in writing from
the manufacturer? Not that the manufacturer would necessarily know, but
still. Do these seem odd to you?


Keep Shining!
Rebecca Lundberg
Powerfully Green
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