enphase Envoy Communications Gateway User manual

INSTALLATION AND OPERATION MANUAL
141-00011, Rev 03
Envoy™ Communications
Gateway

Envoy Installation and Operation
Copyright 2012 Enphase Energy 141-00011 Rev 03
2
Contact Information
Enphase Energy Inc.
201 1St Street
Petaluma, CA 94952
http://www.enphase.com
[e-mail]
[e-mail]
FCC Compliance
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, you are
encouraged to try to correct the interference by one or more of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and the receiver.
•Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for compliance may
void the user’s authority to operate the equipment.
Other Information
For third-party license information, refer to www.enphase.com/licenses.
Product information is subject to change without notice. All trademarks are recognized as the
property of their respective owners.
User documentation is updated frequently; Check the Enphase website
(http://www.enphase.com/support/downloads) for the latest information.
For Enphase Envoy Warranty Terms and Conditions, see page 46 of this manual.
Copyright © 2012 Enphase Energy. All rights reserved.

Envoy Installation and Operation
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Table of Contents
Important Safety Information ................................................................................................................................ 4
Read this First .........................................................................................................................................4
Safety Instructions...................................................................................................................................4
The Enphase Envoy Communications Gateway.................................................................................................. 5
Other Elements in the Enphase System.................................................................................................6
How the Envoy Communications Gateway Works .................................................................................6
Envoy Installation..................................................................................................................................................7
Preparation..............................................................................................................................................7
Installation Flow....................................................................................................................................... 7
Install the Envoy ...................................................................................................................................... 8
1. Add Serial Number Label to Map ...................................................................................................8
2. Register the Envoy ..........................................................................................................................9
3. Find a Location for the Envoy......................................................................................................... 9
4. Connect Ethernet and Power Cables .............................................................................................9
5. Connect Power Line Communication Bridges (Optional)............................................................10
6. Check the Envoy’s Progress ........................................................................................................10
7. Wall Mount the Envoy (Optional) ..................................................................................................11
8. Build the Virtual Array....................................................................................................................12
9. View System Performance in Enlighten........................................................................................12
Envoy Operation .................................................................................................................................................13
First Scan for Microinverters .................................................................................................................13
LCD Screen Displays at Start Up..........................................................................................................13
Normal Operation .................................................................................................................................15
Using The Envoy LCD Menu.................................................................................................................15
Performing a Communication Check ...............................................................................................17
Initiating a Scan for New Microinverters ...........................................................................................18
Viewing the Grid Configuration .........................................................................................................19
Enabling a Connection to Enphase..................................................................................................21
Disabling a Connection to Enphase.................................................................................................21
Selecting a New Locale (Change Language Display) .....................................................................21
How the Envoy Works with Enlighten ...................................................................................................22
Networking and Firewall Info ............................................................................................................23
Using Enlighten to Check Envoy Status...........................................................................................23
Troubleshooting..................................................................................................................................................24
Power Line Communication Troubleshooting ......................................................................................24
Local Area Networking Troubleshooting ..............................................................................................25
Envoy Local Interface .........................................................................................................................................26
Home Screen ........................................................................................................................................26
Production Screen ................................................................................................................................27
Inventory Screen ...................................................................................................................................27
Administration Screen...........................................................................................................................28
Administration Screen Tasks ................................................................................................................28
Manage the Grid Profile ....................................................................................................................29
Clear GFI Tripped Condition.............................................................................................................34
Device Scan Control .........................................................................................................................35
Set the Time Zone.............................................................................................................................37
Other Admin Tasks ...........................................................................................................................37
Event Messages....................................................................................................................................38
Technical Data....................................................................................................................................................45
Appendix A — Limited Warranty ........................................................................................................................46

Envoy Installation and Operation
Copyright 2012 Enphase Energy 141-00011 Rev 03
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Important Safety Information
Read this First
Follow the instructions in this manual. These instructions are key to the installation and
maintenance of the Enphase Envoy Communications Gateway (Envoy™).
To ensure the safe installation and operation of the Envoy, note the following safety
symbols that appear throughout this document to indicate dangerous conditions and
important safety instructions.
WARNING! This indicates a situation where failure to follow instructions may be a safety
hazard or cause equipment malfunction. Use extreme caution and follow instructions
carefully.
NOTE: This indicates information particularly important for optimal system operation.
Follow instructions closely.
Safety Instructions
Perform all electrical installations in accordance with all local electrical codes and the
National Electrical Code (NEC), ANSI/NFPA 70.
Do not attempt to repair the Envoy; it contains no user-serviceable parts. If the
Enphase Envoy fails, please return the unit to your distributor for maintenance.
Tampering with or opening the Envoy will void the warranty.
Before installing or using the Envoy, please read all instructions and cautionary
markings in the technical description and on the Enphase Envoy.

Envoy Installation and Operation
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The Enphase Envoy Communications Gateway
The Envoy is an integral component of the Enphase Energy Microinverter system. It operates
between the Enphase Microinverters and the Enphase Enlighten™ web-based monitoring and
analysis software. The Envoy functions as a gateway and monitors the microinverters that are
connected to the PV modules. The Envoy collects energy and performance data from the
microinverters over in-home AC power lines. It then forwards that data to Enlighten, via the Internet,
for statistical reporting.
The three key elements of an Enphase system are:
•the Enphase Microinverter
•the Enphase Envoy Communications Gateway
•the Enphase Enlighten™ web-based monitoring and analysis software
This integrated system maximizes energy harvest, increases system reliability, and simplifies
design, installation and management. The following diagram shows the Envoy in the system.

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Other Elements in the Enphase System
The Enphase Microinverter is a fully integrated device that converts the DC output of the PV module into
electric-utility compliant AC power. In addition to performing the DC to AC conversion, it maximizes the
PV modules' energy production by using a sophisticated Maximum Power Point Tracking (MPPT)
algorithm. This integrated system maximizes energy harvest, increases system reliability, and simplifies
design, installation and management.
The Enphase Enlighten web-based monitoring and analysis system analyzes the per-module data
collected by each communicating microinverter. Enlighten automatically detects any shortfall in
energy production, identifies possible causes, and suggests solutions. Enlighten constantly
monitors every microinverter connected to the Envoy.
How the Envoy Communications Gateway Works
Installation and operation of the Envoy requires no special computer or networking knowledge, nor
any specialized equipment. The Envoy simply connects to the on-site router for communications
with the Enphase Enlighten monitoring and analysis website. The Envoy communicates with the
individual microinverters using the existing power lines in the residence or business.
After the Envoy is installed and completes its initial scan, it maintains an internal database of all
known Enphase Microinverters at the site it manages. At regular intervals, the Envoy polls each
microinverter for its energy data. Using the site’s broadband router, the Envoy then forwards that
information to the Enphase Enlighten monitoring and analysis website. The Envoy also reports any
error conditions that affect it or the microinverters. You can view both energy data and error
conditions in the Enphase Enlighten web-based monitoring and analysis system.
The Envoy incorporates power line and Internet communications functions. As shown in the
following diagram, one side of the Envoy communicates with the microinverters through power
lines at the site. The other side of the Envoy communicates with the Internet using a standard
Ethernet/network cable plugged into your broadband router.

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Envoy Installation
Preparation
Before installing the Envoy, make sure that the site meets the following minimum requirements:
•Standard AC electrical outlet is available
If you plan to use Enlighten web-based monitoring and analysis, additional requirements include:
•Always-on broadband Internet connection
•Broadband router with spare Ethernet port
•Up-to-date web browser to view Enlighten. Supported browsers are Internet Explorer 8
or higher, Firefox 3.6 or higher, Chrome 5 or higher, and Safari 4 or higher. Enlighten
requires Adobe Flash Player 10 or higher.
Check the Envoy shipping box for the following items:
•Envoy Communications Gateway
•Ethernet cable
•AC power cord
•Power line communication bridges
•Envoy Installation and Operation Manual
•Quick Install Guide
Installation Flow

Envoy Installation and Operation
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Install the Envoy
To install the Envoy, perform the following steps while referring to the diagram shown.
BEST PRACTICE: When powered up and connected for the first time, the Envoy may
retrieve an automatic upgrade from Enphase. Because this upgrade may take up to 45
minutes, connect the Envoy first at the site (connect to both AC power and the
broadband router) so that it performs the upgrade well before the solar module
installation is complete.
1. Add Serial Number Label to Map
a. Remove the Envoy removable serial number label as shown in the diagram.
b. Attach the serial number label to the microinverter installation map or make note of it for
registration in the next step.

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2. Register the Envoy
Register the Envoy at the beginning of the PV installation.
a. Visit http://enlighten.enphaseenergy.com/register.
b. Register the site owner information and the Envoy serial number in the space provided
in the online form.
3. Find a Location for the Envoy
Enphase recommends that the Envoy be placed as close to the load center as possible. This
ensures that the Envoy receives the strongest possible signal from each microinverter. The Envoy
can be placed on a table or it can be wall mounted. For wall mounting instructions, see “Wall
Mounting”on page 11.
a. Locate an electrical outlet close to the site’s load center.
b. Place the Envoy so that its AC cord can reach this outlet.
4. Connect Ethernet and Power Cables
a. Plug the Ethernet cable into the Ethernet port on the Envoy.
b. Plug the other end of the cable into a spare port on the broadband router.
The Envoy needs to obtain a DHCP (Dynamic Host Configuration Protocol) IP address and have a
path to the Internet. The Envoy will request a dynamically assigned (DHCP) IP address from the
broadband router during the power-up sequence.
Two small green LEDs on the Ethernet port indicate link and activity. One LED will be solid green,
and the other will blink green every few seconds.
NOTE: Next to the Ethernet port on the Envoy, there are one or two ports identified by a
USB symbol. You can use these ports to connect optional devices, such as a wireless
communication device for the Enphase Environ Smart Thermostat. The USB ports
cannot be used for a wired or a wireless Ethernet connection.
c. Plug the AC power cord into the AC input on the Envoy.
WARNING! Do not remove power from the Envoy if the LCD displays:
“Upgrading. . . Do Not Unplug.”
d. Plug the other end of the power cord into a dedicated 120VAC power outlet (not a
power strip). For best results, the outlet should be near the load center.
WARNING!Do not plug the Envoy into a power strip, surge protector, or
uninterruptable power supply (UPS). The surge suppression or filtering from a power
strip or other protective device can substantially diminish communication performance.
If possible, do not plug a power strip power cord into the same outlet that the Envoy is
using. The surge suppression or filtering components of a power strip may still interfere
with communications if they are near the Envoy.

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5. Connect Power Line Communication Bridges (Optional)
If the Envoy needs to be located away from the router, at a distance where an Ethernet cable is not
practical, use the power line communication bridges provided with the Envoy or purchase a
wireless Ethernet bridge. Bridges allow the Envoy to communicate with the broadband router
without the need for additional Ethernet cabling. To install the bridges:
a. Plug one of the bridges into the same wall socket that the Envoy is using.
b. Connect one end of the Ethernet
cable into the Ethernet port on the
Envoy.
c. Connect the other end of that
Ethernet cable into the bridge.
d. Plug the other bridge into a wall-
socket near the broadband router.
e. Connect one end of a second
Ethernet cable into the second
bridge.
f. Connect the other end of that
Ethernet cable into the broadband
router.
g. Reapply power to the Envoy to
force it to refresh its IP address.
6. Check the Envoy’s Progress
After installing your Envoy, you can check its progress:
a. Check the Internet connection. Look for the “+Web” indication. If it does not appear
within 15 minutes after connecting to the broadband router, refer to “Local Area
Networking Troubleshooting” on page 25.
b. Check the device count (shown as “n”
in the illustration). An automatic new
device scan will begin to detect
microinverters.
c. Soon, the Envoy will display “Priority Scan is Active” on the LCD screen. Check that the
Envoy LCD shows a complete device count after about 30 minutes. If it does not, see
“Power Line Communication Troubleshooting”on page 24.
d. When all inverters have been discovered at the site, use the Envoy Device Scan Control
menu to stop the new device scan:
•Press and hold the Envoy menu button (on the right side of the Envoy).
•Release it when the LCD window displays Disable New Device Scan.
NOTE: For sites with neighboring Enphase systems, a new device scan should not be
allowed to run overnight because it may discover neighboring microinverters when they
first power-up in the morning. Always stop the new device scan in the afternoon, before
leaving the site.
[≡≡≡ ] mm:ss +Web
Level Devices: n

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e. Assess the power line communications. To do this:
•Wait until the Priority New Device Scan is complete (The message Priority Scan is
Active will no longer be shown on the LCD).
•Press and hold the Envoy menu button. Release it when the LCD window displays
Enable Communication Check. The check will run for 20 minutes.
•Note the number of bars shown in the Communication Check. If fewer than three
bars are shown, see “Power Line Communication Troubleshooting”on page 24.
f. Refer to “LCD Screen Displays”on page 13 for more information.
7. Wall Mount the Envoy (Optional)
NOTE: Before mounting the Envoy, it is best to perform a Communication Check as
described on page 17 to optimize the location of your Envoy.
After you have positioned your Envoy for optimal communications and it is has begun to detect
devices, you can mount the Envoy on a wall. To do this:
a. Select a cool, dry, indoor location for the Envoy.
b. Use two drywall screws or wall anchors (not included) to affix the Envoy to the wall,
mounted at the dimensions shown. You will need two #8 (4.17 mm or 0.16 in.
diameter); maximum screw head diameter is 8.9mm (0.35 in.).
c. Slide the Envoy onto the mounting screws, aligning the Envoy screw holes with the
screws installed in step b.

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8. Build the Virtual Array
When the system is energized and the Envoy detects all the installed microinverters, the installer
can create the virtual array in Enlighten from the installation map they created.
a. Log in to Enlighten.
b. Use Array Builder to
create the virtual array in
Enlighten.
c. Use your installation map
as your reference.
For more information, go to
http://enphase.com/support/videos/ to
see the Array Builder demo.
Once the virtual array is built,
Enlighten displays a graphic
representation of the PV system. It
also shows detailed current and
historical performance information.
9. View System Performance in Enlighten
Once the array is built and the system is activated, the installer and the system owner can log in to
Enlighten to view site data.
If you have not done
so already, log in to
Enlighten to view
system data.
Refer to “How the
Envoy Works with
Enlighten” on page 22
for more information.

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Envoy Operation
First Scan for Microinverters
A newly installed Envoy automatically performs an initial scan to discover all of the microinverters
that are installed and powered up at the site. This initial scan continues to search for new
microinverters for seven days from initial start up of the Envoy. The purpose of this long scanning
period is to account for additional microinverters that may be installed during this initial seven-day
time frame. This one-time process is not repeated. During the scan, you will notice some values
increasing on the Envoy display.
NOTE: If you power up the Envoy, even for just a few minutes, the seven-day scan
begins at that point. If you then power it back down and leave it off until you are ready
to discover the microinverters, the initial scan may have expired. A new scan can be
initiated, and will be required if the installation is done in stages over more than seven
days. The steps for initiating a new device scan are described on page 18 of this
manual.
The Envoy identifies each device by its unique serial number. If a microinverter is ever added or
replaced at the site, you must initiate a new scan so that the Envoy can discover the new
microinverter. The steps for initiating a new device scan are described on page 18 of this manual.
After the Envoy has detected at least one new device, it will automatically enter Priority Scan mode.
The LCD screen will display the following, where “nnnn” represents the number of microinverters
(devices) detected.
NOTE: No power production data will be collected or displayed on the Envoy or in
Enlighten while Priority Scan is active. Also, the Communication Check function will not
operate during this period.
When the Envoy does not detect a device during a polling interval (usually 5 minutes), it will exit
Priority Scan mode. If, subsequently, the Envoy detects another device, it will return to Priority Scan
mode. It will remain in this mode until it again completes an interval where no devices are
detected.
LCD Screen Displays at Start Up
After a power outage or Envoy shut down, it takes less than five minutes for the Envoy to be ready to work
after reapplying power. This five-minute period is known as a boot sequence. You will know the Envoy
has completed booting and has started normal operation when it displays both an IP address and the
“+Web” status indication in the LCD screen.
Priority Scan is
Active Devs: nnnn

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The normal, post installation boot sequence is shown:
Normal
Boot
Sequence
The last two screens alternate until the Communications Check ends, after 20 minutes.
The Envoy normally displays "-Web" for 2 to 3 minutes after the first start up. It then sends the first
report to Enlighten. If Enlighten responds, the Envoy displays +Web. Power production will show
as 0W and 0kWh until the microinverters are discovered and power production begins.
[e] Enphase Energy
Booting [||||||]
Starting R3.0.0
2011/06/06 16:21:20
169.254.120.1 -Web
2407W 783kWh 25

Comm Check -Web
Searching...
192.168.2.140 +Web
2407W 783kWh 25
[≡≡≡ ] mm:ss +Web
Level Devices: 25
INITIALIZING

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Normal Operation
Once the Envoy completes a scan, it begins or resumes normal operation. At this point, the
indicators in the LCD screen show current values for your system. This is the home screen:
The data on the home screen may take a few minutes to appear after starting up the Envoy or
initiating a scan. Information shown during normal operation includes:
•Local IP address, for example: 192.168.2.140 (your actual local IP address will be
different). The Envoy will attempt to get a dynamically assigned DHCP (Dynamic Host
Configuration Protocol) IP address during power up sequence. The Envoy uses the
DHCP IP address as a path to the Internet. If 169.254.120.1 is shown, the Envoy has
not yet acquired a dynamic IP. Refer to “Troubleshooting”on page 24, if this address
continues to display.
•Web connection indication: +Web. The web status indicates whether the Envoy is
connected to Enlighten.
•Indication of the present power-production, in watts: (n)W (where n is a number)
•Indication of the life time kilowatt hours reported to this Envoy: (n)kWh (where n is a
number)
•Indication of the number of online microinverters producing power and reporting in to
the Envoy: (n) (where n is a number). The number of microinverters displayed will be
zero at night.
After the Envoy establishes an IP address and the web connection, the Envoy periodically contacts
an NTP (Network Time Protocol) server so that it can maintain an accurate local time.
Using the Envoy LCD Menu
Use the Envoy Menu button located on the right side of the Envoy to access the Envoy LCD menu.
192.168.2.140 +Web
2407W 783kWh 25
Menu
Button

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1. Press and hold this button; after two seconds you will see the Envoy menu in the
Envoy’s LCD screen.
2. Continue holding the Menu button. Menu items will appear in the following order:
To select a menu item, release the Menu button when the desired menu item appears. The menu
continues to cycle as long as you are pressing the Menu button. The Exit Menu option returns to
the normal (default) display. See the following sections for detailed procedures.
Exit Menu
Enable
New Device Scan
Disable
New Device Scan
Enable
Communication Check
Disable
Communication Check
View Grid
Configuration
Get New IP Address
Enable Connection
To Enphase
Disable Connection
To Enphase
Select New Locale

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Performing a Communication Check
If, when you are installing the Envoy, you are unsure of where it should be located for maximum
performance, you may want to install the Envoy in various locations and check signal strength.
Normally, a communication check starts automatically after an Envoy restart. Alternatively, you can
initiate a communication check with the Envoy Menu button, or through the administration page
when connected to the Envoy local interface with a computer, or via Enlighten (Refer to “Using
Enlighten to Check Envoy Status”on page 23).
NOTE: If a Priority Scan is active, the Communication Check will not occur until the
Priority Scan has expired. If you need to run a Communication Check, you can unplug
the Envoy and then plug it in again or wait until priority scanning has ended during
which time the signal bars will return.
NOTE: Device scans and communication checks can only be done during daylight
hours when the microinverters are powered by the PV modules.
To use the Envoy Menu button to initiate a communication check:
1. Press and hold the Menu button on the right side of the Envoy to bring up the Envoy
menu on the LCD screen.
2. When the LCD screen displays “Enable Communication Check”, release the Menu
button.
The LCD screen then reads:
The Envoy begins a 20-minute communication check to assess the signal strength
between the Envoy and the microinverters detected at the site. Until the Envoy begins
detecting microinverters, the display reads:
When the Envoy begins detecting microinverters, the display reads:
[≡≡≡ ] mm:ss +Web
Level Devices: n
Comm Check +Web
Searching...
Comm check enabled
for 20min
Enable
Communication Check

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Above the “Level” indicator the LCD screen displays brackets enclosing zero to five
bars.
NOTE: Until microinverters are detected, the Level indicator shows no bars.
Signal strength is acceptable if three to five bars are displayed and all devices are
accounted for. One to two bars may not be effective for consistent communication.
3. If, after 15 minutes, fewer than three bars are displayed, refer to “Power Line
Communication Troubleshooting” on page 24.
Remaining minutes and seconds in Comm Check are displayed (“mm:ss” in the
example). The “Devices” counter displays the number of microinverters detected and
will increase until all microinverters are detected. Ultimately, the number of
microinverters detected should match the number of installed microinverters.
4. After 20 minutes, the communication check automatically stops. If you want to end the
communication check before it times out, press and hold the menu button to activate
the Envoy menu. When “Disable Communication Check” displays, release the menu
button.
Initiating a Scan for New Microinverters
If you add additional microinverters to an existing system or replace a microinverter, you will need
to run a scan to detect the new devices. To initiate a scan after you add new microinverters to an
existing Enphase system perform the following steps.
Alternatively, you can initiate a scan through the administration page when connected to the Envoy
local interface with a computer, or via Enlighten (Refer to “Using Enlighten to Check Envoy Status”
on page 23).
1. Press and hold the Envoy Menu button; after two seconds the Envoy menu appears.
2. Continue holding the Menu button. When the LCD screen displays “Enable New Device
Scan”, release the Menu button.
The LCD screen then reads:
Device scan active
for 00d:00h:30m
Enable
New Device Scan

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The Envoy begins a 30-minute scan (if a longer scan is not already in progress) to
identify all of the microinverters deployed at the site.
3. Use your previously issued username and password to check for the new microinverter
in Enlighten. If you do not have a link to Enlighten, go to www.enphase.com and click
Enlighten Login. From here you can register (if not already done) and view data on a
per-microinverter basis (and, hence, a per-PV module basis).
4. To disable or cancel a scan, press and hold the Envoy Menu button for two seconds to
view the Envoy menu. When the LCD screen displays: “Disable New Device Scan”,
release the Menu button.
Viewing the Grid Configuration
To view the grid configuration (trip points profile) for the site, do the following.
Note: You cannot change the grid profile using this menu. To change this profile, refer
to “Manage the Grid Profile”on page 29.
1. Press and hold the Envoy Menu button; after two seconds the Envoy menu appears.
2. Continue holding the Menu button; when the LCD screen displays “View Grid
Configuration”, release the Menu button.
The LCD screen then reads:
If a grid profile has not been applied, the following screen is displayed:
This indicates that the microinverters are not yet configured with a grid profile.
3. Configure these settings as described in “Manage the Grid Profile”on page 29. You
can press the menu button to exit this process.
No Grid
Config. Applied
Gathering Grid
Configuration Data
View Grid
Configuration
Disable
New Device Scan

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If a grid profile has been applied, the following screens are displayed. You can press
the menu button at any time to exit this process.
Number of microinverters
detected.
Number of microinverters that
cannot
be set with a grid profile.
Number of microinverters that are
set with a grid profile and the
name of the specification being
used.
Number of microinverters that are
in the process of being set and
the name of the specification
being used.
Number of devices that failed to
be set with a grid profile.
Updating grid configuration data.
4. Press the menu button to exit this menu.
Checking grid config
Select to exit
(n)devices
have failed
(n)are propagating
with (local spec)
(n)devices are set
with (local spec)
(n)unsettable devices
(n) total devices