[RE-wrenches] SW4024 compatibility question

[Bob-O Schultze]

Allan,
Yes, probably. However....
IF your very early inverter has a serial # <50 or so, there was a  
board issue and it will not stack unless that board was changed out.  
They got most of them but not all. :)
Bob-O

On Oct 30, 2009, at 6:05 PM, Allan Sindelar wrote:

Esteemed Wrenches:
Wrench esoterica time… another contest like Mick’s to win the chance  
to take time off…

A customer has a late-2005 SW4024 with Rev. 4.30 firmware. He needs to  
add a second inverter for series stacking to increase output to run a  
big well pump. We have an early SW4024 with Rev 1.0 firmware, and we  
have both Rev. 4.01 and 4.10 firmware chipsets in our parts archives.  
Are the two inverters compatible if series-stacked with a firmware  
upgrade?

Thank you.

Allan Sindelar
Allan at positiveenergysolar.com
NABCEP Certified Photovoltaic Installer
EE98J Journeyman Electrician
Positive Energy, Inc.
3201 Calle Marie
Santa Fe, New Mexico 87507
505 424-1112
www.PositiveEnergySolar.com

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