Sharp SunVista [RE-wrenches]

[Peter Parrish]

I have purchased two maybe three over the past five years. They all are
holding up or I would have heard about it. As far as I can tell, it is (was)
the only inverter on the market that had truly independent DC inputs. I
probed the DC inputs for current and voltage for a system that had two
S-facing sub-arrays and one nearly flat sub-array, and these measurements
appeared to indicate that the DC operating points were independent. With the
limited time that I devoted to it, I could _not_ say that the each of the
three inputs were indeed independently tracing at maximum power.

I would contact Sharp customer service in Huntington Beach CA. 

Incidently I believe that I am still a Sharp Certified service technician,
but I haven't been asked to perform any service calls for Sharp. My contact
for this certification was John Hardwick. I can't recommend Hardwick in
general as it is difficult to reach him and in specific on one occasion
regarding getting information regarding the possibility of the inverter
backfeeding PV strings he was not helpful at all. The Huntington Beach
facility is a big one and I am sure that there are other people there that
are willing to work with you on this issue.

At the Solar 2007 show in Long Beach I was told that there is a replacement
inverter in development but no information at all wrt availability.

- Peter 

Peter T. Parrish, Ph.D., President
California Solar Engineering, Inc.
820 Cynthia Ave., Los Angeles, CA 90065
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
CA Lic. 854779, NABCEP Cert. 031806-26
peter.parrish at calsolareng.com 

-----Original Message-----
From: Marco Mangelsdorf [mailto:marco at pvthawaii.com] 
Sent: Saturday, January 05, 2008 9:40 AM
To: RE-wrenches at topica.com
Subject: [Norton AntiSpam] Sharp SunVista [RE-wrenches]


I've got a Sharp SunVista 3.5 kW inverter that appears to have died--no
display.  It's been in the field for about three years and has no display.
What's been the collective experience of you all as far as the performance
and reliability of this inverter, which is no longer made? 

I've called our Sharp friends twice now and they seem to be asleep at the
wheel since no one there is able to tell me what to do with the inverter,
where to send it, etc.  Sharp customer service?  Hah!  Any suggestions on
what else I can do to get my customer back on-line?

Thanks,
marco 

Marco Mangelsdorf, Ph.D., President
Electrical Contractor License C-26351
69 Railroad Avenue, A-7
Hilo, Hawai'i 96720
(808) 969-3281, 934-7462 facsimile
www.provisiontechnologies.com <http://www.provisiontechnologies.com/> 

 

 

 


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