[RE-wrenches] Just getting old?

[Dave Angelini Offgrid Solar]

Bill, I remember the warranty was not great and the ones I had 
experience were not top Tier. I am thinking dumb looks are still free 
and a Seventeen year old installation is going to be more free time for 
you. I hope I am wrong, good luck!

Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail  offgridsolar at sti.net
text 209 813 0060

On 2023-05-22 12:24 pm, Bill Battagin via RE-wrenches wrote:

> I went back to this array, removed all J-box covers and tested for Voc. 
>  The majority of the PVs were ~ 9.5Voc, about 5 were ~19 Voc, 3 were 0 
> (that's zero) Voc .  The diodes are in an encapsulant.  The label says 
> Voc = 22V. Another array of Mitsubishi panels takes a dive.
> 
> Anybody have contact info for them or recent experience with their 
> warranty?
> 
> Thanks,
> 
> Bill
> 
> Feather River Solar Electric
> Bill Battagin, Owner
> 4291 Nelson St.(shipping)
> 5575 Genesee Rd. (USPS, UPS)
> Taylorsville, CA 95983
> 530.284.1925 Office/ 530.258.1641 Cell
> CA Lic 874049
> Solar powered since 1982
> 
> On 5/17/2023 10:25 PM, Darryl Thayer via RE-wrenches wrote:
> 
> Was the inverter connected at the time of testing?  If so I suspect the 
> inverter is loading the solar array below Vmp
> 
> On Wed, May 17, 2023 at 11:23 PM frenergy via RE-wrenches 
> <re-wrenches at lists.re-wrenches.org> wrote: Wrenches,
> 
> I've got a call from a customer that said their (my
> install) 17 year old GT system went dead. Basic stats: 23, Mitsubishi
> PVMF120EC3, label says V mpp= 17.6V and Voc = 22 V; top-of-pole; SMA
> SB3800U. Its one string of 23 PVs.  Full sun, 75 degrees ambient during
> testing. When I checked DC voltage at the inverter landings I got 
> ~23-29
> volts (fluctuating) same at the input side of the DC switch.  These
> panels have the old gasketted 4-screw covered J-boxes and screw
> terminals inside, I removed the covers from three panels and got 9.5
> volts at the each of the panels' screw terminals,  all the wiring
> outside the boxes checks out.
> 
> The system had been functioning normally 3 weeks prior. I
> could check voltage at more panels I guess.  Ideas?
> 
> Bill
> 
> Feather River Solar Electric
> Bill Battagin, Owner
> 4291 Nelson St.(shipping)
> 5575 Genesee Rd. (USPS, UPS)
> Taylorsville, CA 95983
> 530.284.1925 Office/ 530.258.1641 Cell
> CA Lic 874049
> Solar powered since 1982
> 
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