HI Dan, Have you tried this on a different power source, say generator etc? You might also try a different inverter brand just to make sure.
I once had radio noise from a magnum, some years ago. Tried everything, in the end, I swapped it for a VFX and the problem was gone, customer was happy. And I'm going to agree with Mitsubishi, most likely the inverter. The OB/FX just isn't compatible with some machines. jay peltz power On Nov 30, 2014, at 4:29 PM, <d...@foxfire-energy.com> <d...@foxfire-energy.com> wrote: > We're still not at the bottom of it. Seems Mitsubishi is doing their level > best to finger the RE system. Yes, the current wave form (On a Fluke 43 Power > Analyzer) has a shoulder.. looks down right funky on one inverter thru the > X240 until the 2nd inverter lights. Current also looks funkular when each > mini split is lit (Pulses).. Still, I'm thinking it's more about how the mini > splits toke power rather than how the Outbacks produce power. The voltage > waveforms look fine. > > the other chin scratcher is that it seems this model of mini split has only > been around since spring. There might be a model specific cold weather setup > the AC folks missed. Something about a jumper on a control board that needs > to be snipped to enable the compressor heater. > > We also noticed that all mini splits work just fine if you leave them on and > turned down.. But that kind of power draw for folks that have been loving off > grid since 92 is just unacceptable. (these guys were turning off GFI breakers > because they could see a draw). > > Either way, the power system itself is working fine as is everything else in > the house. And no, the new power system has not kept the lawn mower from > starting or the dog from eating the cats food. > > Peace. db > > Dan Brown > Foxfire Energy Corp. > Renewable Energy Systems > (802)-483-2564 > www.Foxfire-Energy.com > NABCEP #092907-44 > <sigimg0.png> > > > -------- Original Message -------- > Subject: Re: [RE-wrenches] Mitsubishi Mini Split fighting with Outback > VFX Off Grid > From: Wayne Irwin <wa...@pureenergysolar.com> > Date: Tue, October 21, 2014 8:52 pm > To: Wrenches <re-wrenches@lists.re-wrenches.org> > > We have found that the mini-splits have only had issues while gen sets are > running. > In some cases (when on genset) the mini's will run irregularly or flash a > fault status. > > Rather than try to have the mini's run on gen power we install dc chargers to > charge batts from gen power. > > My thought is that the AC Installer either has something wrong or the > Mitsubishi's have very tight parameters. > Be sure that the wiring from the inside unit to the outside unit are correct. > Should be only three wires (plus gnd). Very easy to check. > > Possible alternative solution would be look into the cost of installing a > Gree since they are the least expensive. > > > > Wayne Irwin, > President > License #CVC56695 > State Licensed Solar Contractor > Pure Energy Solar International Inc. > wa...@pureenergysolar.com > http://PureEnergySolar.com > http://SolarChargingStation.net > 352 377-6527 Office > 352 336-3299 Fax > 352 316-1637 Cell > > The Sun Is Always Shining! > > The content of this message is Pure Energy Solar Confidential. If you are not > the intended recipient and have received this message in error, any use or > distribution is prohibited. Please notify me immediately by reply e-mail and > delete this message from your computer system. Thank you. > > > Date: Tue, 21 Oct 2014 11:23:31 -0600 > From: r...@solarray.com > To: re-wrenches@lists.re-wrenches.org > Subject: Re: [RE-wrenches] Mitsubishi Mini Split fighting with Outback VFX > Off Grid > > The Outback is not a perfect Sinewave. It still has tiny steps in the wave, > and when electronics have a problem, its usually with the wave form as it > crosses zero voltage . Instead of being instantaneous, it has a few > milliseconds of time the wave is at the zero crossing, which can drive some > electronics nuts. I don't understand the issue beyond that, but apparently > the electronics use the zero crossing for timers and synchronizing, and > they're looking for an instant "click", not a smear. > Do the heat pumps work with the generator? Even though generators can have > more harmonic distortion, they do usually have a clean zero crossing. > If this is the case, I'm afraid I don't have a cure. We used to use > capacitors, but Dan from Exeltech just poo pooed that fix in another recent > thread, so I don't have any other tricks up my sleeve. > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer > 303 505-8760 > On 10/21/2014 8:54 AM, d...@foxfire-energy.com wrote: > Anyone else had issues with Mitsubishi Mini Split heat pumps fighting with > Outback VFX off grid inverters? Everything is brand new. Outback VFX7248, > three separate heat pumps. The heat pumps shut down reporting multiple / > confusing input commands. The heat pump guys want to blame the power system. > I'm thinking bad Sushi. Thanks db > > > Dan Brown > Foxfire Energy Corp. > Renewable Energy Systems > (802)-483-2564 > www.Foxfire-Energy.com > NABCEP #092907-44 > <ATT00001.png> > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > > > _______________________________________________ List sponsored by Redwood > Alliance List Address: RE-wrenches@lists.re-wrenches.org Change listserver > email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update > participant bios: www.members.re-wrenches.org > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
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