<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Hey wrenchers,</div><div><br data-mce-bogus="1"></div><div> Anybody see an issue with swapping out a failed SB6000TL-us-22 with a SB6.0-1SP-US-40 or 41. The string voltages and amps work for both with this array.</div><div>Thanks, Bill</div><div><br data-mce-bogus="1"></div><div> <!--StartFragment--><pre class="moz-signature">Feather River Solar Electric
Bill Battagin, owner
4291 Nelson St. (Shipping)
5575 Genesee Rd. (USPS, UPS)
Taylorsville, CA 95983<br><span class="Object" id="OBJ_PREFIX_DWT164_com_zimbra_url"><span class="Object" role="link" id="OBJ_PREFIX_DWT407_com_zimbra_url"><a href="http://www.frenergy.net" rel="noopener nofollow noopener noreferrer" target="_blank" data-mce-href="http://www.frenergy.net">www.frenergy.net</a></span></span>
530-284-7849, 258-1641(cell)
CA. C10 Lic # 874049
Solar Powered since 1982
Home of the Sunny Side Up</pre><!--EndFragment--> </div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Maverick Brown via RE-wrenches" <re-wrenches@lists.re-wrenches.org><br><b>To: </b>"RE-wrenches" <re-wrenches@lists.re-wrenches.org><br><b>Cc: </b>"Maverick Brown" <maverick@mavericksolar.com><br><b>Sent: </b>Thursday, October 16, 2025 5:11:37 PM<br><b>Subject: </b>Re: [RE-wrenches] Sol-Ark 15K and HomeGrid - Comm Cable Pinout<br></div><div><br></div><div data-marker="__QUOTED_TEXT__">As a side note,<br><div>I just swapped a pair of 12k MCU boards. Pretty easy for the 12k and I left them hanging on the wall but completely shutdown. </div><br><div>That’s a great time for an AC bypass. <br><br><div>The MCU board has the device ID, aka inverter serial number.<div><br><div>So, when you swap them out, you’ll need to re parallel the group and likely with Sol-Ark on the line. </div><br><div>Then, the old “inverter” will show as disconnected and if you don’t need its historical data, it can be deleted. </div><br><div><div dir="ltr">Thank you,<br><div>Maverick</div><div><div id="AppleMailSignature" style="color:rgb( 0 , 0 , 0 );font-family:'helvetica';font-size:12px"><div class="ApplePlainTextBody"><br></div><div class="ApplePlainTextBody">Maverick Brown<br>Off-Grid Solar Commander since 2006<br>Maverick Solar Enterprises, Inc.<br> • Solar Commander Remote Power<br> • SunFlow Systems Cathodic Protection <br>maverick@mavericksolar.com<br>512-460-9825</div><br></div></div><br></div><div dir="ltr"><br><blockquote>On Oct 16, 2025, at 6:25 PM, Jason Szumlanski <jason@floridasolardesigngroup.com> wrote:<br><br></blockquote></div><blockquote><div dir="ltr"><div dir="auto"><div><div>Thanks Maverick. This turned out to be the answer. No ground wire was needed. </div><div dir="auto"><br></div><div dir="auto">I found out the master inverter is faulty. I connected the cable to the slave (after unparalleling) and it worked. Sol-Ark was surprisingly very willing to send me a new MCU board without any argument. </div><br><div><div dir="ltr"><br>Jason Szumlanski<div><span style="color:rgb( 51 , 51 , 51 );font-family:'roboto' , 'robotodraft' , 'helvetica' , 'arial' , sans-serif;font-size:13px">Principal Solar Designer | Florida Solar Design Group</span><br style="color:rgb( 51 , 51 , 51 );font-family:'roboto' , 'robotodraft' , 'helvetica' , 'arial' , sans-serif;font-size:13px"><span style="color:rgb( 51 , 51 , 51 );font-family:'roboto' , 'robotodraft' , 'helvetica' , 'arial' , sans-serif;font-size:13px">NABCEP Certified Solar Professional (PVIP)</span><br style="color:rgb( 51 , 51 , 51 );font-family:'roboto' , 'robotodraft' , 'helvetica' , 'arial' , sans-serif;font-size:13px"><span style="color:rgb( 51 , 51 , 51 );font-family:'roboto' , 'robotodraft' , 'helvetica' , 'arial' , sans-serif;font-size:13px">Florida State Certified Solar Contractor CVC56956</span></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif">Florida Certified Electrical Contractor EC13013208</font></div></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, Oct 16, 2025, 1:00 PM Maverick Brown via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="nofollow noopener noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 0.8ex;border-left:1px #ccc solid;padding-left:1ex"><div>Jason,<br><div>I have a couple working HomeGrid to Sol-Ark installs.</div><br><div>The manual does seem to mix flavors of cable and even the cable that came with the HomeGrid install of 2024 has Ethernet Type A color code pin out.</div><br><div>If you keep the pin out as type A, that is fine, but I made a chart with Type B wiring, attached. Also, I think you should not connect the other unnecessary wires on the Sol-Ark side, just to eliminate any issues. </div><br><div>I also assume they are using CAN and not using RS485...</div><br></div><div><br><div>Let me know how that works for you.</div><br><div>Thank you,</div><br><div>Maverick</div><br><div><div>
<div dir="auto" style="word-wrap:break-word"><div style="color:rgb( 0 , 0 , 0 );font-family:'helvetica';font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px">Maverick Brown<br>Off-Grid Solar Commander since 2006<br><b>Maverick Solar Enterprises, Inc.</b></div><div style="color:rgb( 0 , 0 , 0 );font-family:'helvetica';font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><b> • Solar Commander Remote Power</b></div><div style="color:rgb( 0 , 0 , 0 );font-family:'helvetica';font-size:12px;font-style:normal;font-weight:normal;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px"><b> • SunFlow Systems Cathodic Protection <br></b><a href="mailto:maverick@mavericksolar.com" rel="noreferrer nofollow noopener noreferrer" target="_blank">maverick@mavericksolar.com</a><br>512-460-9825<br></div></div>
</div>
<div><br><blockquote><div>On Oct 16, 2025, at 9:27 AM, Jason Szumlanski via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer nofollow noopener noreferrer" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:</div><br><div><div dir="auto"><div>Does anyone know for sure what the correct pinout is on the communication cables for this pairing? Sol-Ark has multiple battery integration guide versions. </div><div dir="auto"><br></div><div dir="auto">Some show two wires connected to pins four and five on the inverter and seven and eight on the battery, respectively. In another version of the guide, four is connected to eight and five is connected to seven. In yet another version, a green wire is introduced. I have tried all three combinations, and none work.</div><div dir="auto"><br></div><div dir="auto">I can't get a straight answer out of either manufacturer, and of course they're both pointing fingers at each other regarding my battery communication issue. </div><div dir="auto"><br></div><div dir="auto">Sol-Ark is sending a firmware update and recommended a factory reset. That's the next step, but it doesn't answer the question about the correct pinout.</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">Jason Szumlanski </div><div dir="auto">Florida Solar Design Group </div><br><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><b><div style="text-align:center"><table border="0" cellpadding="0" cellspacing="0" style="color:rgb( 34 , 34 , 34 );font-weight:400;font-family:'helvetica neue' , 'helvetica' , 'arial' , sans-serif"><tbody><tr><td rowspan="2"></td><td rowspan="2"><table border="0" cellpadding="0" cellspacing="0" style="border-left:1px solid rgb( 237 , 237 , 237 );color:rgb( 85 , 85 , 85 );font-size:13px;padding-left:10px"><tbody><tr><td style="font-size:14px;color:rgb( 51 , 51 , 51 )"><br></td></tr></tbody></table></td></tr></tbody></table></div></b></div></div></div></div></div></div></div></div>
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