[RE-wrenches] Enphase monitoring picking up other systems

Mon Apr 14 11:49:03 PDT 2014

Hi Benn,

You can remove the microinverters from an Envoy, but it requires a laptop
and a network cable.  Call me and we can talk.  We have a lot of big
projects with home builders, and I am more than happy to share our best
practices with you.  My cell number is 707-321-2937.

On Mon, Apr 14, 2014 at 11:42 AM, Benn Kilburn <benn at skyfireenergy.com>wrote:

> 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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-- 

Cordially,

*Nick Soleil*

*Field Applications Engineer*

*Enphase Energy*

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