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<body class='hmmessage'><div dir='ltr'><font style="font-size:12pt;" size="3" color="#000000">We have found that the mini-splits have only had issues while gen sets are running. <br>In some cases (when on genset) the mini's will run irregularly or flash a fault status.<br><br>Rather than try to have the mini's run on gen power we install dc chargers to charge batts from gen power.<br><br>My thought is that the AC Installer either has something wrong or the Mitsubishi's have very tight parameters.<br>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.<br><br>Possible alternative solution would be look into the cost of installing a Gree since they are the least expensive.<br> <br></font><br><br><font style="font-size:12pt;" size="3" color="#008A17">Wayne Irwin</font><font style="font-size:12pt;" size="3" color="#008A17">,</font><font style="font-size:12pt;" size="3" color="#008A17"><br></font><font style="font-size:12pt;" size="3" color="#008A17">President</font><font style="font-size:12pt;" size="3" color="#008A17"><br></font><font style="font-size:12pt;" size="3" color="#008A17">License #CVC56695 </font><font style="font-size:12pt;" size="3" color="#008A17"><br></font><font style="font-size:12pt;" size="3" color="#008A17">State Licensed Solar Contractor</font><font style="font-size:12pt;" size="3" color="#008A17"><br></font><font style="font-size:12pt;" size="3" color="#008A17">Pure Energy Solar International Inc. </font><font style="font-size:12pt;" size="3" color="#008A17"><br></font><font style="font-size:12pt;" size="3" color="#008A17">
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message from your computer system. Thank you.</font></p><br><br><div><hr id="stopSpelling">Date: Tue, 21 Oct 2014 11:23:31 -0600<br>From: ray@solarray.com<br>To: re-wrenches@lists.re-wrenches.org<br>Subject: Re: [RE-wrenches] Mitsubishi Mini Split fighting with Outback VFX Off Grid<br><br>
<div class="ecxmoz-cite-prefix">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. <br>
Do the heat pumps work with the generator? Even though generators
can have more harmonic distortion, they do usually have a clean
zero crossing.<br>
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.<br>
<pre class="ecxmoz-signature">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760</pre>
On 10/21/2014 8:54 AM, <a class="ecxmoz-txt-link-abbreviated" href="mailto:dan@foxfire-energy.com">dan@foxfire-energy.com</a> wrote:<br>
</div>
<blockquote cite="mid:20141021075412.720a661d8db719b1f2ad39509c9edaa3.7eec600f56.wbe@email14.secureserver.net"><span style="font-family:Verdana;color:#000000;font-size:10pt;">
<div>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<br>
</div>
<div><br>
</div>
<div><br>
Dan Brown<br>
Foxfire Energy Corp.<br>
Renewable Energy Systems<br>
(802)-483-2564<br>
<a href="http://www.Foxfire-Energy.com" target="_blank">www.Foxfire-Energy.com</a><br>
NABCEP #092907-44</div>
<div><img id="ecxsigimg0" title="signature image" src="cid:part2.05050506.04010304@solarray.com" alt="" border="0"></div>
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