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<p>A guess is too many devices on the xanbus. Are you using Facility? The -60 reverting is a new one for me. Maybe isolate each one seperately in case one is malo.</p>
<p>buenas suerte!</p>
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<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
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<p id="reply-intro">On 2026-01-13 4:29 am, Jason Szumlanski via RE-wrenches wrote:</p>
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<div>I have a new client with an existing Schneider dual XW Pro system with four MPPT 100 and two MPPT 60 charge controllers. They have a SCP, AGS, and Insight. </div>
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<div dir="auto">The system is reporting DC over voltage faults on the two inverters (viewable via SCP. The battery voltage is not high. It's a bank of EG4 LL batteries that would hit their high battery cutoff well before the XW detects a high battery condition.</div>
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<div dir="auto">I went through all of the setting and discovered that the two MPPT 60 were set to a nominal voltage of 36V. I fixed that by changing them to 48V and cleared the faults and all was well. I did this though the SCP.</div>
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<div dir="auto">By the time I came home, however, the faults returned and the MPPT 60 both reverted to 36V nominal. </div>
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<div dir="auto">I'm not sure why the DC over voltage faults are showing up on the XWs, but it seems related to the nominal voltage issue on the MPPT 60s.</div>
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<div dir="auto">Any ideas?</div>
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<div dir="auto">Schneider tech support has me wasting time today going for a boat ride to the site to put a meter on the battery terminals, when I know it's obviously not an actual battery voltage issue. I'm hoping to steer them in a different direction. </div>
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<div dir="auto">Jason Szumlanski </div>
<div dir="auto">Florida Solar Design Group </div>
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