[RE-wrenches] Off-grid Firmware XW Pro

[Kevin Pegg]

Hi Luke,

It’s a long story, and I have posted previously about it. Yes bad wiring can cause issues, but in my experience we eliminated that. Tech support had me chasing all over for weeks the first time this came up. Verified every single connection. Found the odd connection that wasn’t perfectly torqued but otherwise wiring was fine. I don’t think they were aware of the issue at that point. They certainly are today.

The issue with 2.04 firmware manifests while under generator charging. Lights flickering, you can hear the XW groaning really hard, and if you scope it you may see THD very high. Some units it would charge ok if you could ignore all the light flicker, other units it would charge for a couple minutes then kick the charger out, to repeat.

One client with a brand new home I did a follow up site visit and upgraded all firmware, before I was aware of this issue. Client called me back a week later – walked into his new, freshly painted house and it smelled like burned plastic. Client had noticed the lights flickering but let it continue for days before advising. We had to replace his LED light controllers as well as the alarm panel.

Replaced inverter, ensured the 1.11 firmware installed before inverter put into service, and no more issues.

Kevin

From: RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> On Behalf Of Luke Christy via RE-wrenches
Sent: December-04-25 9:19 AM
To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
Cc: Luke Christy <sgsrenewables at gmail.com>
Subject: Re: [RE-wrenches] Off-grid Firmware XW Pro

Kevin,
 Can you elaborate on some of the issues you’ve sen with XW Pro off grid and with the >V2.04 firmware versions? I have a few XW Pro units out there fully off-grid running newer firmware and I haven’t had any trouble— yet.

Thanks,
-Luke

Luke Christy
Renewable energy consultant

NABCEP Certified PV Installation Professional™:

Solar Gain Services, LLC
PO Box 531
Monte Vista, CO 81144
719.588.3044
sgsrenewables at gmail.com<mailto:sgsrenewables at gmail.com>


On Dec 4, 2025, at 9:52 AM, Kevin Pegg via RE-wrenches <re-wrenches at lists.re-wrenches.org<mailto:re-wrenches at lists.re-wrenches.org>> wrote:

I’d zero in on the firmware first. Bad wiring can cause issues, but if it’s actually letting the smoke out of electronics, pretty high chance it’s the bad firmware that Schneider knows all about but refused to address.

If it’s got 2.04 firmware get rid of it. Downgrade to 1.11. It’s the only stable software for that system IMO.

https://www.se.com/us/en/product-range/66297-xw-pro/#software-and-firmware

My only other comment is I am seeing best client satisfaction by un-installing anything Scheider made post 2019 and replacing it with a better brand that just works reliably and consistently.

Kevin

From: RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org<mailto:re-wrenches-bounces at lists.re-wrenches.org>> On Behalf Of Mac Lewis via RE-wrenches
Sent: Thursday, December 4, 2025 5:56 AM
To: RE-wrenches <re-wrenches at lists.re-wrenches.org<mailto:re-wrenches at lists.re-wrenches.org>>
Cc: Mac Lewis <maclewis1 at gmail.com<mailto:maclewis1 at gmail.com>>
Subject: [RE-wrenches] Off-grid Firmware XW Pro

Hello Wrenches,

I am visiting a site with an XW Pro and it sounds like it's burning up appliances.  This system was installed by neighbors so it may be a wiring problem but I also wonder if it may have the bad firmware that was doing this (generator interaction was the problem I think).

Can anyone remind me of the proper firmware that we should run for an off-grid system with the XW Pro?  How to get it?  And any other nuances that I should be aware of?

Thanks in advance!

--



Mac Lewis

"Yo solo sé que no sé nada." -Sócrates
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