[RE-wrenches] PV output but no power

[Mac Lewis]

Kyocera had a batch of 120s and 85s that had bad solder connections from a
certain year. I'm not remembering the year at the moment but we are still
finding them.

Kyocera has been really amazing about honoring the warranty.

On Jul 2, 2016 2:52 PM, "Jerry Shafer" <jerrysgarage01 at gmail.com> wrote:

> Wrenches
> Bypass diods fail and may short
> Jerry
> On Jul 2, 2016 1:49 PM, "frenergy" <frenergy at psln.com> wrote:
>
>> I just came upon a small off-grid system: 12 volt, 4, Kyo 120's (I,mppt=
>> 7.1A; Voc = 21.7 or so), Trace C40 with display, etc.   The combiner has
>> fuses for each PV/landing.  At noon, output of the array is 10.5 amps.
>> Clamping the 4 pvs I get 5.5 amps on 2 PVs and 0.0 on 2 others.  I
>> disconnect leads from terminals in PV j-box of the 'dead' PVs and I get
>> Voc=18.5 (pretty hot day) and Isc= 6 amps. However when I reconnect these
>> same PVs to the combiner there is no change in combined amps.  Fronts and
>> backs of PVs look good, no burns, browns, bubbles in backsheet, under the
>> glass looks fine, its all good.  Inside the J-boxes look perfect/new.
>> Ideas?
>> Thx,
>> Bill
>>
>> Feather River Solar Electric
>> Bill Battagin, Owner
>> 4291 Nelson St.
>> Taylorsville, CA 95983
>> 530.284.7849
>> CA Lic 874049
>> www.frenergy.net
>>
>>
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