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<div class="moz-cite-prefix">While the problems seem related, I'm
guessing the gen set issue is a low coolant or low oil condition.
The generator has sensors that shut it down if they don't see
fluid (coolant, or oil) after a few seconds. The symptoms fit
that.<br>
<br>
For the inverter, it is either fried or has some programming set
wrong, I'd try the replacement, since you've got it.<br>
Are you sure its not going into search mode? Might defeat the
search mode, that cycling is what Trace inverters used to do when
the loads were not quite enough to wake it up fully.<br>
<pre class="moz-signature" cols="72">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760</pre>
On 10/17/2013 10:41 AM, SunHarvest wrote:<br>
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<div><font face="Arial" size="2">I have encountered a Trace 2548
in seemingly good working condition. I was called out to
troubleshoot a Grid-tied, battery back-up system with the
following problem:</font></div>
<div> </div>
<div><font face="Arial" size="2">- Upon loss of grid power
there is about a 5 second lapse (no power to house) before the
BB system engages. Power to the critical loads panel from the
Trace is restored after the 5 second lapse.</font></div>
<div><font face="Arial" size="2">- After another 5 seconds the
Trace will disconnect power to the loads. This on-off cycle
continues until grid power is restored.</font></div>
<div> </div>
<div><font face="Arial" size="2">After checking voltage & S.G.
values, I determined that the 11 year old batteries needed to
be replaced and I assumed this was the cause of the Trace
on-off cycling.</font></div>
<div><font face="Arial" size="2">I also found that half of his PV
array had bad BP modules. BP replaced all of the modules under
somewhat of a warranty. So, new modules, new batteries, and a
new Outback FM60 charge controller. After all upgrades I ran
through a simulated power outage again and the intermittent
power problem persists!</font></div>
<div> </div>
<div><font face="Arial" size="2">He also has gen support enabled -
connection to an Onan "RV Genset BGE NHE (??) - and when I
start the genny from the inverter, by selecting "On" not
"Auto", the genset fires right up but only stays on for about
30 seconds before it too shuts off and enters a cycling
between auto-starting from the inverter and shutting down.</font></div>
<div> </div>
<div><font face="Arial" size="2">This behavior is beyond me. So,
I'm seeking help from the pros. Anyone know what's going on
here? The customer has another Trace 2548, unused, sitting in
a box. So, if I needed to I could swap out the inverter and
see if that makes a difference...?</font></div>
<div> </div>
<div><font face="Arial" size="2">Eric</font></div>
<div><font face="Arial" size="2">SunHarvest</font></div>
<div><font face="Arial" size="2">(530)798-3738</font></div>
<br>
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