[RE-wrenches] Enphase failures

[William Miller]

Troy:

Of the 100 or so Enphase inverters we have seen 2 fail.  I have my fingers 
crossed.

Wm

PS:

Xantrex GT:  About 15% failure
SMA SB:  About 15% failure
Fronius:  300% failure rate

wm


At 01:02 PM 7/5/2012, Troy Harvey wrote:
>I'm wondering how many of you have had Enphase failures in the field. 
>Basically every one of our sites with M175 or M190 has seen failures. Most 
>of those are one their second wave of replacements. It appears these have 
>a linear failure rate in the field, and we have to replace 2 to 3 
>inverters at every site, every year.
>
>At this point we have stopped using Enphase products because the cost of 
>replacement is too high. You have to disassemble a whole array just to 
>replace 1 or 2 inverters. In theory it gives you per-panel diagnostics, 
>but that is just silly considering the panels are thousands of times more 
>durable than the inverters.
>
>What is your experience?
>
>thanks,
>
>Troy Harvey