[RE-wrenches] Enphase M190 failures

[Kent Osterberg]

Wrenches,

Less than a year ago I would have told you that I hadn't seen any 
Enphase M-190 failures. But since I don't have 1000's in service, as 
many of you do, that seemed an insignificant datum. The significance has 
changed. On a site where I have 48 installed: one failed last fall, 
another failed in the winter, and as we started hitting maximum 
irradiance levels and warmer temperatures there has been a steady stream 
of failures. Now it is up to 7 failures or 14.6% of the inverters at 
this sight. The news I got from Enphase this morning is that this site 
still does not meet the criteria for a full change-out to M215 
inverters. Of course they wouldn't tell me what the criteria are.

The question I have for those of you that have managed to get Enphase to 
do the right thing and upgrade all the M190 inverters to M215 inverters: 
how many inverters had to fail before the site met Enphase's criteria 
for replacement? I'd like to get an idea of how long I'll be in this mess.

-- 
Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com