SB2500 Display Panel issues revisited [RE-wrenches]

[Kent Sheldon]

Paul, I don't know what is going on exactly. Sounds like there have been
a lot of hands playing with the displays. We have had a small number of
display problems that will behave like you have stated (black lines).
Most of the time, R&R'ing the display will solve the problem. Sounds
like you may have already tried this. Please contact Jason Mills 530 273
4848 in SMA technical support. He will arrange an RMA and get you a new
display.

This problem will not keep the inverter from working normally. The
display is not integral to the inverter operation. When the green LED is
solid, the inverter is power tracking. Regards,

____________________________________________
Kent Sheldon
Projects Manager, Industrial Power Systems
SMA America
ksheldon at sma-america.com
530 271 1821 Office



-----Original Message-----
From: asap at podnine.com [mailto:asap at podnine.com] 
Sent: Monday, December 30, 2002 11:38 AM
To: RE-wrenches at topica.com
Subject: SB2500 Display Panel issues revisited [RE-wrenches]

Kent, John, Matt,

Thanks for words on the display panel issue on right side inverter of a
pair.  Here's the rest of the story:  the left side inverter commenced
normally to begin with, while we discovered right side inverter problem
as discussed, but on the second day the left side did not wake up with
the
right side inverter, which continued to operate normally.  Homeowner
reported this and we walked him through  ecommence for both
sides/system, and left side's display came back on again, all normal.  I
do not know if the left side's green light was on during that time, on
that ccasion.

So the week goes by and apparently things were looking normal during
this time, but the Homeowner admittedly was just checking to make sure
the meter was spinning backwards when he felt it should have been and
said it was. Also meanwhile, both County inspectors and SDGE popped in
and gave everybody a thumbs up.  But when I went out to pick up
paperwork,  left side inverter had only character blocks on the first
line of the display.  Green light was on solid.  Decided to recommence
entire system and left side's display
worked fine after that, right side inverter continued to behave.
Checked alignment on display panel left side inverter, it was positioned
on the pins correctly, and of course, it has been working before and is
displaying now.
Just the trouble in the beginning and this past Saturday with the
character blocks.

Now the Homeowner feels like the inverter is not working, even if it is
of course, since he can't determine kwh for the day, etc. when this
happens.  The hour count was only off by 1.  And etotal was pretty close
too, so again, i think both sides are putting out to the grid.  Would a
new display panel solve this?  Things to check?  Or does John get one of
these units back after all?  Strange that we'd get a pair of display
panel problems, especially after bragging about how SMA inverters are
practically free from anomalies like this!

Peter
ASAP POWER! / 1AU, Inc

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