<div dir="auto">I hope everyone realizes the defective nature of the design of this inverter. There is no means to safely de-energize the PV prior to separating the top and bottom sections. Foolishly SMA put the PV disconnect in the top half. </div><div dir="auto"><br></div><div dir="auto">Read the service manual and you will see SMA recommends putting foil over the PV modules prior to servicing. </div><div dir="auto"><br></div><div dir="auto"><div style="font-size:inherit"><a href="https://millersolar.com/MillerSolar/case_studies/SMA_40_Series/Whats_wrong_with_40_Series.html" style="font-size:inherit">https://millersolar.com/MillerSolar/case_studies/SMA_40_Series/Whats_wrong_with_40_Series.html</a></div><div dir="auto"><br></div><div dir="auto">Stay safe!</div><div dir="auto"><br></div>William<br clear="all"><div dir="auto"><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><br>William Miller<br>Miller Solar.com<br>805-438-5600<br><a href="http://www.millersolar.com">www.millersolar.com</a><br></div></div></div><div><br></div><div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Sat, Jan 31, 2026 at 12:42 PM Tyrone Houck via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div dir="auto"><div>My belief is that most GT inverter failures are caused by grid surges of some kind. </div><div dir="auto"><br></div><div dir="auto">I'm surprised they would deny a warranty and unsure how they would prove the utility caused the problem. I've had several AC side failures of sunny boy inverters and never had SMA deny a warranty especially once sending device logs and onsite voltage readings. Open the top half and inspect for physical damage then document with photos. Should be an automatic RMA.</div><div dir="auto"><br></div><div dir="auto"> Its common for them to send "top half" replacements. The online connectivity corresponds with the connection unit in the lower half and the top half serial needs to be added online so definitely keep track of all top and bottom serial numbers.</div><div dir="auto"><br></div><div> As for a third party source for older inverters, I don't have any advice there. Ebay would probably be my first thought too.</div><div dir="auto"><br></div><div dir="auto">Best of luck!</div><div data-smartmail="gmail_signature"><br> </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Jan 31, 2026, 9:06 AM Bill P. Battagin via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div><div style="font-family:arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)"><div style="font-family:arial,helvetica,sans-serif">Fellow SMA Lovers,</div><div style="font-family:arial,helvetica,sans-serif"><br></div><div style="font-family:arial,helvetica,sans-serif"> I have an installation that has 10, SMA SB-1SP-US -40 and -41's PG&E thought it would be a good idea to send a surge into the service of this install so 3 off the inverters were compromised.</div><div style="font-family:arial,helvetica,sans-serif"><br></div><div style="font-family:arial,helvetica,sans-serif">1) I've gone to Ebay for replacements sometimes as SMA would not consider this a warranty issue. Anybody have a source for new or refurbished other than Ebay?</div><div style="font-family:arial,helvetica,sans-serif"><br></div><div style="font-family:arial,helvetica,sans-serif">2) Also it would be good to know, can the bottom connection box covers with displays be swapped/interchanged between different inverters and between -40 and -41 versions?</div><div style="font-family:arial,helvetica,sans-serif"><br></div><div style="font-family:arial,helvetica,sans-serif">Thanks as always,</div><div style="font-family:arial,helvetica,sans-serif">Bill</div><div style="font-family:arial,helvetica,sans-serif"><br></div><div style="font-family:arial,helvetica,sans-serif"> <pre style="font-family:monospace">Feather River Solar Electric
Bill Battagin, owner
4291 Nelson St. (Shipping)
<a href="https://www.google.com/maps/search/5575+Genesee+Rd?entry=gmail&source=g" target="_blank" style="font-family:monospace">5575 Genesee Rd</a>. (USPS, UPS)
Taylorsville, CA 95983
530-284-7849, 258-1641(cell)
CA. C10 Lic # 681552/874049
Solar Powered since 1982
Home of the Sunny Side Up</pre> </div><div style="font-family:arial,helvetica,sans-serif"><br></div><hr id="m_2705523744220524497m_-580983971006421531zwchr" style="font-family:arial,helvetica,sans-serif"><div style="font-family:arial,helvetica,sans-serif"><br></div></div></div>_______________________________________________<br>
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