[RE-wrenches] Fortress

[William Miller]

Jay:



Here is a link
<https://millersolar.com/MillerSolar/case_studies/36_SIFortress/36_SunnyIslandFortressIntegration.html>
to the study.



The web page needs to be updated with this information:



There are two settings to be changed in the Sunny Boy Inverters:  Backup
mode and Default.  See Below:





I had set the default to OFF_Grid but I had not set the Backup Mode to On
All.  It was in Off.



There is a possibility changing the Backup Mode setting may fix the
Frequency Shift Power Control problem that is the root of this dilemma.
There have not been enough sunny days to see the PV bring SOC up to the
level of near 100% where the problem exhibits.  As soon as the weather gets
sunnier and the days get longer I will see what happens and report back.



William



Miller Solar

17395 Oak Road, Atascadero, CA 93422

805-438-5600

www.millersolar.com

CA Lic. 773985





*From:* Jay [mailto:jay.peltz at gmail.com]
*Sent:* Thursday, February 15, 2024 5:50 AM
*To:* william at millersolar.com; RE-wrenches
*Subject:* Re: [RE-wrenches] Fortress



Hi william



Could you share the equipment used and what issues you had?



Thx

Jay



On Feb 14, 2024, at 3:13 PM, William Miller via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:



Peter:



I have only purchased one set of Fortress batteries.  There have been
issues, I am sure many of them self-induced.  Fortress has been overall
very responsive.  There have been a few days where I could not get through
to technical support but with persistence I always manage.  Fortress has
offered truck–roll compensation at a reasonable rate as well.



William Miller



Miller Solar

17395 Oak Road, Atascadero, CA 93422

805-438-5600

www.millersolar.com

CA Lic. 773985





*From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
Behalf Of *Peter Giroux via RE-wrenches
*Sent:* Wednesday, February 14, 2024 6:47 AM
*To:* 'RE-wrenches'
*Cc:* pgiroux at mindspring.com
*Subject:* [RE-wrenches] Fortress



Good morning my fellow wrenchers. While I see the comments on SunPower and
the challenges, are any of you having similar issues with Fortress? Their
bms boards from the early classics have not held up and even after
replacement there are still issues ( parallel batteries and stand alone not
showing accurate #’s,  ). While support has been, well supportive, the
issues persist. Any thoughts or fixes you have come up with?? I just had a
customer unplug the coms cable from their sol-ark and bring their readings
to volts VS %% and it is starting to work a bit better. Any and all help or
ideas appreciated.



Thx
peter Giroux

American Solar

Norcross Ga

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