<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Chris,<div class=""><br class=""></div><div class="">Does this happen with all 4 sets of 2 in series modules?</div><div class=""><br class=""></div><div class="">jay<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Apr 4, 2022, at 10:12 AM, Chris Daum via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" class="">re-wrenches@lists.re-wrenches.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><font size="2" face="Calibri" class=""><span style="font-size: 11pt;" class="">Hey folks:<o:p class=""></o:p></span></font></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><font size="2" face="Calibri" class=""><span style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></font></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><font size="2" face="Calibri" class=""><span style="font-size: 11pt;" class="">We have a problem we just can\u2019t figure out.<span class=""> <span class="Apple-converted-space"> </span></span>We have a customer in OK with a simple array of eight Trina TSM 310-DD05H(II) modules, four stings of two modules into the combiner (<span class="SpellE">Midnite</span><span class="Apple-converted-space"> </span>MNPV6).<span class=""> <span class="Apple-converted-space"> </span></span>Simple, right?<span class=""> <span class="Apple-converted-space"> </span></span>He connects two modules, gets his 73.2VDC and lands his PV output leads on the circuit breaker and discovers he only has 39VDC.<span class=""> <span class="Apple-converted-space"> </span></span>So, what are the possibilities?<span class=""> <span class="Apple-converted-space"> </span></span>Loose connections at the MC4 connectors?<span class=""> <span class="Apple-converted-space"> </span></span>Bad blocking diode?<span class=""> <span class="Apple-converted-space"> </span></span>Ideas anyone?<o:p class=""></o:p></span></font></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><font size="2" face="Calibri" class=""><span style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></font></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><font size="2" face="Calibri" class=""><span style="font-size: 11pt;" class="">He\u2019s in<span class="Apple-converted-space"> </span><span class="SpellE">Henryetta</span>, OK, and we cannot seem to find anyone local to help him.<span class=""> <span class="Apple-converted-space"> </span></span>All ideas appreciated!<o:p class=""></o:p></span></font></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><font size="2" face="Calibri" class=""><span style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></font></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><font size="2" face="Calibri" class=""><span style="font-size: 11pt;" class="">Best,<o:p class=""></o:p></span></font></div></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><font size="2" face="Calibri" class=""><span style="font-size: 11pt;" class=""><o:p class=""> </o:p></span></font></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><font size="2" face="Calibri" class=""><span style="font-size: 11pt;" class="">Chris Daum<o:p class=""></o:p></span></font></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><font size="2" face="Calibri" class=""><span style="font-size: 11pt;" class="">Oasis Montana Inc.<o:p class=""></o:p></span></font></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><font size="2" face="Calibri" class=""><span style="font-size: 11pt;" class="">406-777- 4321<o:p class=""></o:p></span></font></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><font size="2" face="Calibri" class=""><span style="font-size: 11pt;" class="">406-777-4309 fax<o:p class=""></o:p></span></font></div><div style="margin: 0in; 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