[RE-wrenches] Sol-Ark 15K2P F20 MPPT Overcurrent Error

Sun Apr 12 07:43:28 PDT 2026

I Daryl,

I have a project that might benefit from ten Sol-Ark 30K (max in parallel).
Did you work with a consulting engineer on your 60K projects? I am looking
for qualified engineers who can handle large systems like this.

Best,

Jason Szumlanski
Principal Solar Designer | Florida Solar Design Group
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956
Florida Certified Electrical Contractor EC13013208

On Sun, Apr 12, 2026 at 8:46 AM Daryl DeJoy via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> We have over 130 Solark inverters installed, from 5k to multiples of 60k's
> and I have not seen that error at all. I have found their inverters to be
> reliable as long as their software updates are kept up to date.
> That's just my experience, though.
>
> Daryl DeJoy
> NABCEP Certified PVIP since 2006
> Island Energy Storage
>
> On Sun, Apr 12, 2026, 8:35 AM Jay via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> Is this a common problem with Sol Ark inverters?
>>
>>
>>
>> On Apr 12, 2026, at 5:40 AM, david quattro via RE-wrenches <
>> re-wrenches at lists.re-wrenches.org> wrote:
>>
>> 
>> In a similar vein of thought, it may be helpful to only engage one string
>> at a time to hopefully isolate error codes.
>>
>>
>>
>> On Sat, Apr 11, 2026 at 8:36 AM Jason Szumlanski <
>> jason at floridasolardesigngroup.com> wrote:
>>
>>> You might consider taking this one step further and physically
>>> disconnecting one string at a time. Since the error happens multiple times
>>> a day, maybe you can isolate the issue to one string.
>>>
>>>
>>> Jason Szumlanski
>>> Principal Solar Designer | Florida Solar Design Group
>>> NABCEP Certified Solar Professional (PVIP)
>>> Florida State Certified Solar Contractor CVC56956
>>> Florida Certified Electrical Contractor EC13013208
>>>
>>>
>>>
>>>
>>> On Fri, Apr 10, 2026 at 7:56 PM david quattro via RE-wrenches <
>>> re-wrenches at lists.re-wrenches.org> wrote:
>>>
>>>> i would swap which strings go into the different MPPT's to see if each
>>>> specific problem follows the DC string // or do they follow the MPPTs.
>>>> Another option is kinda a lot of work but might be worth it - take a
>>>> different inverter out there and "bench test" it with those strings
>>>> unadulterated
>>>> Good luck and please let us how this one resolves.
>>>>
>>>>
>>>>
>>>> On Fri, Apr 10, 2026 at 4:05 PM Vince McClellan via RE-wrenches <
>>>> re-wrenches at lists.re-wrenches.org> wrote:
>>>>
>>>>> Hello Wrenches
>>>>> Has anyone else on this list had issues with a Sol-Ark 15K2P randomly
>>>>> shutting down several times a day with an F-20 MPPT overcurrent error? The
>>>>> errors are occurring when the system is well under the max amperage per
>>>>> MPPT of 26 amps. We've had the inverter turn itself off when the online
>>>>> data shows 12.5 amps max. I realize that Sol-Ark's online data updates only
>>>>> every 5 minutes, so I could be possible that there is a spike that the
>>>>> online data isn't showing, but the array is in full sun with the same
>>>>> number of modules and the same string configuration on all 3 MPPT's.
>>>>>
>>>>> We are also seeing other anomalies such as MPPT 1 at 12 amps with MPPT
>>>>> 2 and 3 at 22 amps. Again, with the solar array in full sun, no clouds, and
>>>>> no shade.
>>>>>
>>>>> Sol-Ark originally thought it was because of an issue with Tigo RSD
>>>>> switches, but we don't use Tigo. We've had way too many issues with Tigo
>>>>> products.
>>>>>
>>>>> We've had people suggest that we're seeing the results of an edge of
>>>>> cloud affect, but there are not clouds to cause this.
>>>>>
>>>>> We've also tested all the circuits with a insulation tester in every
>>>>> possible configuration, and tested our wiring to insure there were no
>>>>> mistakes by ringing it out with a multimeter. The wiring is good.
>>>>>
>>>>> Sol-Ark tech support doesn't seem to know what the issue is, but they
>>>>> are assuring us that it's not their inverter at fault.
>>>>>
>>>>> I could use any suggestions that come to mind. I'm not sure what else
>>>>> to try at this point.
>>>>>
>>>>> Thank you,
>>>>>
>>>>>
>>>>> Vince McClellan
>>>>>
>>>>> President
>>>>>
>>>>> NABCEP PV Professional
>>>>>
>>>>> p: 541-485-8122
>>>>>
>>>>> a: 860 Conger St. Suite 12,. Eugene, OR 97402
>>>>> <https://www.google.com/maps/search/860%0D%0AConger+St.+Suite+12,.+Eugene,+OR+97402?entry=gmail&source=g>
>>>>>
>>>>> e: vince at solarenergydesgin.com
>>>>>
>>>>> w: SolarEnergyDesign.com
>>>>>
>>>>> CCB# 161672
>>>>>
>>>>> If you have received this email and are not the intended recipient,
>>>>> please delete this email. Copying or using any part, content, or attachment
>>>>> of this email is strictly prohibited.
>>>>> _______________________________________________
>>>>> List sponsored by Redwood Alliance
>>>>>
>>>>> Pay optional member dues here: http://re-wrenches.org
>>>>>
>>>>> List Address: RE-wrenches at lists.re-wrenches.org
>>>>>
>>>>> Change listserver email address & settings:
>>>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>>>>
>>>>> There are two list archives for searching. When one doesn't work, try
>>>>> the other:
>>>>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
>>>>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>>>>
>>>>> List rules & etiquette:
>>>>> http://www.re-wrenches.org/etiquette.htm
>>>>>
>>>>> Check out or update participant bios:
>>>>> http://www.members.re-wrenches.org
>>>>>
>>>>> _______________________________________________
>>>> List sponsored by Redwood Alliance
>>>>
>>>> Pay optional member dues here: http://re-wrenches.org
>>>>
>>>> List Address: RE-wrenches at lists.re-wrenches.org
>>>>
>>>> Change listserver email address & settings:
>>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>>>
>>>> There are two list archives for searching. When one doesn't work, try
>>>> the other:
>>>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
>>>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>>>
>>>> List rules & etiquette:
>>>> http://www.re-wrenches.org/etiquette.htm
>>>>
>>>> Check out or update participant bios:
>>>> http://www.members.re-wrenches.org
>>>>
>>>> _______________________________________________
>> List sponsored by Redwood Alliance
>>
>> Pay optional member dues here: http://re-wrenches.org
>>
>> List Address: RE-wrenches at lists.re-wrenches.org
>>
>> Change listserver email address & settings:
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>
>> There are two list archives for searching. When one doesn't work, try the
>> other:
>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>
>> List rules & etiquette:
>> http://www.re-wrenches.org/etiquette.htm
>>
>> Check out or update participant bios:
>> http://www.members.re-wrenches.org
>>
>> _______________________________________________
>> List sponsored by Redwood Alliance
>>
>> Pay optional member dues here: http://re-wrenches.org
>>
>> List Address: RE-wrenches at lists.re-wrenches.org
>>
>> Change listserver email address & settings:
>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>>
>> There are two list archives for searching. When one doesn't work, try the
>> other:
>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>>
>> List rules & etiquette:
>> http://www.re-wrenches.org/etiquette.htm
>>
>> Check out or update participant bios:
>> http://www.members.re-wrenches.org
>>
>> _______________________________________________
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
>
> List Address: RE-wrenches at lists.re-wrenches.org
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> There are two list archives for searching. When one doesn't work, try the
> other:
> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> http://www.re-wrenches.org/etiquette.htm
>
> Check out or update participant bios:
> http://www.members.re-wrenches.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20260412/c7fc93ed/attachment.htm>