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<div class="moz-cite-prefix"><font size="-1">Hi Bill,<br>
<br>
<font size="-1">The dreaded F3......with over 40 Grundfos
systems out there, I've seen several of these.<br>
<br>
<font size="-1">The most likely cause is a bad connection and
the most common of those <font size="-1">are the splices
underwater.<br>
<font size="-1">I hate to say it but it can also be a bad
CU200<font size="-1">. I've seen the <font size="-1">inter<font
size="-1">nal modems go bad.<br>
<br>
<font size="-1">First test is to jumper the power
directly to the pump....if it runs, it's likely
the CU200.<br>
<font size="-1">If not, it's either wiring or
the pump.<br>
<br>
<font size="-1">If this is PV direct and the
weather looks iffy, bring a 36 or 48 v<font
size="-1">olt power source with you.<br>
<font size="-1">We have a standard deep
cycle battery box with 3- 21 AH sealed
batteries in series that we use.<br>
<br>
<font size="-1"><font size="-1">And when
all else fails, pull the pump<font
size="-1">, cut the wires on the
pump side of the splice<font
size="-1"> and test the pump.<br>
<font size="-1">You will need a
4-6" piece of PVC pipe, capped
on one end and filled with
water for this t<font
size="-1">est because<br>
<font size="-1">of the dry
run sensor built into the
pump wiring.</font><br>
</font></font></font></font></font></font></font></font></font><br>
<font size="-1">This is my experience....I'm
curious to see what others say.<br>
<br>
<font size="-1">Good luck!</font><br>
</font></font></font></font></font></font></font></font></font></font></font>
<pre class="moz-signature" cols="72">Roy Butler
NABCEP Certified Small Wind Installer®
NABCEP Certified Solar PV Installer®
NYSERDA eligible PV & wind installer
Four Winds Renewable Energy, LLC
8902 Route 46, Arkport, NY 14807
607-324-9747 <a class="moz-txt-link-abbreviated" href="http://www.four-winds-energy.com">www.four-winds-energy.com</a>
Join us at the 9th Annual Small Wind Conference
A Gathering of Installers, Manufacturers, Dealers, & Distributors
June 18 and 19, 2013 in Stevens Point, Wisconsin
<a class="moz-txt-link-abbreviated" href="http://www.smallwindconference.com">www.smallwindconference.com</a>
Although no trees were killed in the sending of this message,
a large number of electrons were terribly inconvenienced.
</pre>
On 4/27/2013 9:54 AM, frenergy wrote:<br>
</div>
<blockquote cite="mid:936A6A11EB074B5FAC6BCCE262F165CF@D8XG8YH1"
type="cite">
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<div>Wrenches,</div>
<div> </div>
<div> I have been asked to repair a Grundfos SQ
installation for our area Land Trust. Pump is not pumping and
the controller (CU200) is throwing a code of: F3. The manual
says loose wires, bad connection, failed CU200 or failed pump.
I'm looking for more experience than mine in these matters
before I drive the 3 hour round trip out there for the repair
for: most likely issues, tests to conduct, tools, spare parts
(controller??)......</div>
<div> </div>
<div>Thanks in advance,</div>
<div> </div>
<div>Bill Battagin</div>
<div>Feather River Solar Electric<br>
4291 Nelson St.<br>
Taylorsville, CA 95983<br>
530.284.7849 / 6544 fax</div>
<div> </div>
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