<div dir="ltr"><div>Jay</div><div>In Optics RE</div><div>Mate 3S verify that the firmware is 1.4.6</div><div>under global charge are all switches "disabled"</div><div>in the GS AC Input "Grid", </div><div>Charger "Off", </div><div>"Grid Tie" set </div><div>Offset enable "Yes"</div><div>sell is up to you and battery manufacture</div><div>Jerry</div><div><br></div><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Jul 18, 2021 at 1:44 PM jay <<a href="mailto:jay.peltz@gmail.com">jay.peltz@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">HI All,<br>
<br>
I\u201dm trying to diagnose the following system I didn\u2019t install.<br>
<br>
4 year old system grid tie battery back up.<br>
<br>
Radian 4048<br>
flexmax 80<br>
3500 watts PV<br>
fndc<br>
it is on opticsRE<br>
<br>
The symptoms are that its not selling much at all. Mostly when it is about 1kw max PV production and .8kw selling. I have disconnected the FNDC and after that it did seem to work better. <br>
<br>
Usually it will sell a bit, then buy a bit then sell and so on. Grid voltage is very constant at around 246vac. <br>
<br>
I\u2019ve been through the settings a few times with tech support, made adjustments and for a while it was selling pretty normally, but again today 0 production, CC is at float. <br>
<br>
I have not been to the site, I was just trying to do this all by optics. But I\u2019m going to have to go. I think there are 3 possible issues. <br>
<br>
1. the customer has always thought the production is low. And from what I\u2019ve seen that is true. This is in a very sunny place, no shade so with 3.5kw, 1kw is very low which I think they may have a few strings of the array are not connected. However why that bothers me is that the VOC/VMP voltages are too close in looking at the CC. Which leads me to think its been told to back off to the 1.0kw, by some setting, see #2. And its always around .8 selling and around 1kw output from the array. <br>
<br>
2. There is a programing issue. <br>
<br>
3. There is a hardware issue.<br>
<br>
<br>
If someone wants to look at the site, I have the info and they can log in. <br>
Or if they want to provide settings for me to triple check, that would be great<br>
and <br>
if they have any ideas as to why its acting like it is, very much appreciated <br>
So far even though tech support has viewed in on Optics and have had some recommendations as to settings, its not fixed the issue.<br>
<br>
thanks in advance,<br>
<br>
jay<br>
<br>
peltz power<br>
<br>
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