[RE-wrenches] Enphase monitoring picking up other systems

[Benn Kilburn]

August,
I'm being told that "we" (as opposed to "Enhpase") cannot delete or remove
rogue inverters from the Array Builder.  Enphase has to do this step.   And
if you just don't include the rogue inverters in the Array Builder you are
building for a particular system, you will still receive the production
data from the rogues.  (2nd hand info, so......?)

Louis,
Since some of these are home builder's 'show homes' and new home builds,
there is the possibility that internet has not always been set up yet, so
in some of these cases the inverters may not have been dedicated to a
particular Envoy yet.

If "we" cannot remove rogue inverters from a particular Envoy, then we will
likely just send the serial numbers of the Envoy and respective inverters
to Enphase and let them sort it out.

We may consider the Array Gun scanner option.

Anyone else have any feedback on this option?


Cheers,
Benn



On Mon, Apr 14, 2014 at 12:21 PM, Louis Woofenden <louis at woofenden.net>wrote:

>
> Hi Benn,
>
> We've run into these problems when simultaneously commissioning systems in
> adjacent units of a housing development where we did PV systems on all
> homes, and 2-3 homes are on one utility transformer. I'm a little surprised
> that the Envoy picked up inverters from an existing system, unless those
> microinverters were never associated with another Envoy. My understanding
> from Enphase is that once they are "bound" to one Envoy, they won't be
> easily picked up in a device scan. But maybe I'm missing something, or got
> bad info from tech support.
>
> We've definitely had to work with Enphase tech support on a couple of
> systems to remove inverters from one Envoy, then do a device scan on
> another Envoy, as August suggested. Another option is to spend the money
> for the Array Gun scanner (SocketMobile CHS7xi scanner), and use the iOS
> Enphase Installer Toolkit app to build arrays and "provision" the Envoy,
> sending the inverter serial numbers directly to the Envoy, without need for
> a device scan. Not sure if this is worth it at the $450 retail price for
> the scanner, but if you can find one used, it might be. I recently was able
> to pick one up for about $250 used.
>
> Haven't yet had issues serious enough to require LCFs on residential
> systems. Crossing my fingers on that one.
>
> Best,
>
> Louis Woofenden
>
> Net Zero Solar, Tucson, AZ
>
>
> On 4/14/14, 9:08 AM, Benn Kilburn wrote:
>
>  Wrenches,
> I'm sure i read a thread on this list about dealing with this, i've
> searched but cannot find it.  If anyone recalls the subject line, please
> let me know.
>
>  We are dealing with setting up Enphase monitoring in neighborhoods with
> other Enphase systems nearby and these 'other' systems are being picked up
> by the EMU.
>
>  A few weeks ago we finished a 14 module (3.5kW) install and i plugged in
> the EMU to search for the inverters.  As it was picking up the first few
> inverters, it was showing several hundred kWh already produced???  Not bad
> for a 14 module system being in operation for 10 min!!!  (yes the inverters
> were new, out of the box)
>
>  After 30-40 min, the EMU had picked up 28 inverters in total.  There
> were 14 on the system we had just installed, and 14 on a house across the
> street that we had installed back in Nov'13.  I'm pretty sure it had picked
> up the 14 across the street before picking up the ones we just installed.
> Funny that we can sometimes have communication issues btwn the inverters
> and EMU in some houses, and here we have EMU's picking up inverters across
> the street!?!
>
>  Anywho... has anyone dealt with this and streamlined a process with
> Enphase to remedy this issue?
>
>  Cheers,
> Benn
>
>
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