[RE-wrenches] Midnite AIO Random Unexplained Shutdowns

Fri Dec 26 10:55:47 PST 2025

It has happened since installation at both sites. One house is new
construction, and the issue started before any loads were even connected.

Unfortunately, restarting the inverters requires manual intervention. With
the AIOs, solar doesn't work in standby. Off is off. The inverters sit at
idle and just draw battery/grid power to stay "up" and the WiFi interface
stays powered (assuming the WiFi is otherwise powered).

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, Dec 26, 2025, 1:20 PM Jay via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> So frustrating.
>
> A few questions.
> Does the inverter restart on its own?
> Has it done this since install?
> Or is any new loads?
>
> I have had a LUX power 12kw do something similar. I don’t know if it is
> connected to your issue.
>
> I finally tracked it down to a small 1/2 wave heater load in a bidet.
>
> As I learned more from some blogs and talking to people, the issue at
> least with the the lux is if the total AC  loads are high enough all works
> fine. If the total loads are low enough, typically under 1kw, and the 1/2
> wave is around 300 watts +/- it’s enough to shut the inverter off.
> It does auto start solar least that’s good.
>
> That system was web connected and eg4 couldn’t identify what the cause was
> from any of the online monitoring. They said check grounding and neutral
> bonds etc. obviously that wasn’t the issue.
>
> Good luck
>
> Jay
>
>
>
>
>
>
>
>
>
>
>
> On Dec 26, 2025, at 9:23 AM, Maverick Brown via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> I have the same issue, but a single inverter installation. It happened a
> few times at night.
>
> No log entry.
>
> Tech support suggested upgrading to version 7. I asked for release notes.
> I haven’t upgraded yet, I haven’t had time to go babysit it for the
> customer. I’ve been trying to train the customer to do it himself. (bypass
> mode, standby, etc. I did install a bypass switch and I also installed a
> bluetti battery on the router.)
>
> Release notes would be nice.
>
> Thank you,
>
> Maverick
>
> Maverick Brown
> Off-Grid Solar Commander since 2006
> Maverick Solar Enterprises, Inc.
>  • Solar Commander Remote Power
>  • SunFlow Systems Cathodic Protection
> maverick at mavericksolar.com
> 512-460-9825
>
>
>
> On Dec 26, 2025, at 10:53 AM, Jason Szumlanski via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> 
> Hi all,
>
> I have two new systems experiencing random shutdowns anywhere from 48
> hours to 3 weeks apart. The inverters will simply shut off, going into
> standby with no power to the loads, and absolutely nothing in the fault
> logs. Turning them back on with the master inverter power switch or
> remotely with app restores normal operation for some random period of time
> before it happens again.
>
> Here are the similarities:
>
> -Parallel inverter systems (3 or 4 AIO)
> -Powerflo16 batteries, closed loop comms (80 kWh and 112 kWh)
> -Grid interactive systems with netmetering
> -Large PV systems with DC Coupled PV on each inverter
> -Shutdowns typically happen at night, early morning hours
> -Loads are low and nothing out of the ordinary on the load side happening
> at the time of shutdown
> -Confirmed no errant Neutral to Ground bonds that shouldn't be there
> -Proper installation of ferrite rings
> -AP Smart RSDs
>
> Differences:
> -Two different firmwares (but all firmware per site is the same per
> inverter). Updated at different times by Midnite tech support remotely
>
>
> Has anyone experienced anything like this, and if so, did you find a
> resolution?
>
> I have a call into Midnite and hope to make some progress on Monday. I'm
> seriously concerned, especially with one site that doesn't have a bypass
> (due to space constraints). I can't have these sites going down and cutting
> power to the homes!
>
>
> Jason Szumlanski
> Florida Solar Design Group
>
>
>
>
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