<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Allan,<div><br></div><div>I have a recent power issue come up with a Magnum inverter. A customer tried to operate her Splindide washer/dryer but the motor would not start. I looked at the waveform with a scope and RMS voltage and frequency were fine. The waveform looked good until the motor tried to start. The washer was putting a jagged noise riding on the sine wave. The voltage and waveform still looked OK other than the noise. Mostly sure that this was the cause, I grabbed a 600 watt cheap import sine wave inverter and connected the washer. Same ripple was present on the waveform but the $400 inverter would run the washer motor fine. It also ran fine with a 1600 watt Honda inverter/generator. I have written to Magnum about this and had no response to date (about 4 days now). </div><div><br></div><div>Have you looked at the waveform while operating the igniter? Perhaps this is a similar problem.</div><div><br><div> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Lucida Sans'; font-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div><div><br class="Apple-interchange-newline">Kindest Regards,</div><div><br></div><div>Larry Crutcher</div><div>Starlight Solar</div><div>(928) 941-1660</div><div>Renewable Energy Products, Service and Installation</div><div><br></div><div>Mailing Address (NO SHIPPING):</div><div>Box 11114 </div><div>11279 S. Glenwood Ave</div><div>Yuma, AZ 85367</div><div><br></div></div><div>Shipping and retail store (NO MAIL):</div><div>2998 Shari Ave </div><div>Yuma, AZ 85365</div></span></div></span> </div><br><div><div>On Feb 9, 2009, at 11:16 AM, Allan Sindelar wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"> <div> <!-- Converted from text/rtf format --><p><font face="Times New Roman">Wrenches,</font> <br><font face="Times New Roman">We have an unusual problem, and I need to know if anyone else has had this or a related problem, and what to do about it.</font></p><p><font face="Times New Roman">This concerns a new off-grid residential system, very conventional: 1,800W PV, Midnite E-Panel with Magnum MS4448-AE inverter, MX60, 16 S-460s, installed summer 2008. This existing home is being extensively remodeled, and the home is not yet occupied. A local mechanical contractor installed a new infloor radiant (gypcrete) hydronic heating system using a Netherlands-made (German company) Buderus GB142 high-efficiency boiler. The problem is that the boiler won't start reliably on the inverter. It appears that the hot-surface igniter does not get full AC voltage (it runs on straight 120V AC, but is supplied through the boiler's control circuitry). We tested the igniter by disconnecting it and plugging it straight into inverter AC and it lit right up. </font></p><p><font face="Times New Roman">The mechanical contractor has tried a replacement Buderus GB142 boiler with the same result. I was told that they brought out a generator and it also failed to ignite on generator AC, but not knowing the generator used or the way it was wired (I believe an extension cord to a portable) I don't put much weight on this data. They also took a Lochinvar Boiler to the site to test the theory that a different manufacturer's boiler might work. The Lochinvar boiler, which uses a different control and a spark ignition rather than a hot surface igniter, worked on site without any problems.</font></p><p><font face="Times New Roman">I'm looking for solutions. Magnum tech support had not heard of this. Have you? </font> <br><font face="Times New Roman">Also, if indeed we have an inverter that is incapable of running this load, how do we make it right to the homeowner and the mechanical contractor? What should be Magnum's obligation? What should be ours? This issue hasn't come up here since the days when the Trace SW mod-sine series was the waveform standard.</font></p><p><font face="Times New Roman">Thanks,</font> <br><font face="g">Allan Sindelar </font> <br></p></div></blockquote></div></div></body></html>