Same here. Kyocera was very good at providing replacements and covering
reasonable labor.
On 6/11/2014 8:20 PM, Jerry Shafer wrote:
David
The KC 120 had some issues with soldered connections on the module
looks like a cigarette burn from the back or maybe just a blister, it
will be on the shrt side of the module. Anyway it will drop the module
in half most of the time or try to work while it burns the poorly
soldered connection, it will also get bery hot as it is arcing inside.
You need the SN# and call the manufacture if its on there list it
might be replaceble they can tell you. As I recall its a C that is the
SN that has an issue but check to make sure.
I have replaced entire arrays because of this.
On Wed, Jun 11, 2014 at 4:47 PM, Dave <d...@independentpowerllc.com
<mailto:d...@independentpowerllc.com>> wrote:
Wrenches,
I troubleshot an underperforming off grid array today and found
low Voc's in 4 out of 10 KC-120's (nominal 12v modules rated at
21.5 Voc and 7.45 Isc). Modules are vintage 2000.
Under modest sunlight (500 to 600W per M sqd) 6 modules measured
from 18 to 19 Voc and 4 Isc. Four modules measured from 9.6 to
13.7 Voc and 4 Isc.
I was chased off the roof by a coming thunderstorm and did not
check for bad diodes. These modules have nice old school J-boxes
with 6 diodes per each module.
Am I looking at a diode issue, or failing modules?
Thanking you in advance for your time,
David Palumbo
Independent Power LLC
462 Solar Way Drive
Hyde Park, VT 05655
802-888-7194 <tel:802-888-7194>
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