[RE-wrenches] outback grid tie help

Mon Jul 19 07:22:17 EDT 2021

100% agree with Kirpal. Had the same issue on a multi-stacked 8048 setup.

From: RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> On Behalf Of jay
Sent: Sunday, July 18, 2021 9:26 PM
To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
Subject: Re: [RE-wrenches] outback grid tie help

HI Kirpal,

This sure seems like a real possibility.  

I don’t know that there have been any firmware updates.  I know its one REV behind, but tech support didn’t think that was an issue.  

As to the installer menu, does anyone know where I can find a map/menu of all the options?

thx

jay

On Jul 18, 2021, at 7:46 PM, Kirpal <solarworks at gmail.com <mailto:solarworks at gmail.com> > wrote:

Hi Jay.  We had a similar situation arise once after we updated the firmware of a 4048 radian.  The inverter was a circa 2015 unit.  After updating it would only sell about 1/4 of the normal array output to the grid.  

We talked to Chris at tech support and he had us go into the installer menu and look up the max sell current and somehow the inverter firmware update had changed a setting deep in the installer menu to limit sell amps.  It was a menu which we had never been in.  Adjusting to the normal 16a of sell current up from the 4A immediately corrected the issue.  

Your problem sounds exactly like the one we experienced. 

Did you update firmware recently?

I believe you have to be on site to access the installer menu....

Chris is typically on the job at 6am pacific time and easy to get ahold of early....I recommend trying to get ahold of him to walk you thru the steps.  

Best of luck.

Kirpal 

Oregon Solarworks 

On Sun, Jul 18, 2021, 12:26 PM jay <jay.peltz at gmail.com <mailto:jay.peltz at gmail.com> > wrote:

HI All,

I”m trying to diagnose the following system I didn’t install.

4 year old system grid tie battery back up.

Radian 4048
flexmax 80
3500 watts PV
fndc
it is on opticsRE

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.  

Usually it will sell a bit, then buy a bit then sell and so on.  Grid voltage is very constant at around 246vac. 

I’ve 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.  

I have not been to the site, I was just trying to do this all by optics.  But I’m going to have to go.   I think there are 3 possible issues.  

1. the customer has always thought the production is low.  And from what I’ve 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. 

2.  There is a programing issue.  

3. There is a hardware issue.

If someone wants to look at the site, I have the info and they can log in.  
Or if they want to provide settings for me to triple check, that would be great
and 
if they have any ideas as to why its acting like it is, very much appreciated 
So far even though tech support has viewed in on Optics and have had some recommendations as to settings, its not fixed the issue.

thanks in advance,

jay

peltz power

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