enphase M215 User manual

INSTALLATION AND OPERATION MANUAL
141-00021, Rev 01
Enphase Microinverter
Model M215™
(M215-60-230)

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
2
Corporate Headquarters Contact Information
Enphase Energy Inc.
1420 N. McDowell Blvd.
Petaluma, CA 94954
Phone: [phone]
http://www.enphase.com
[email protected]
United Kingdom Contact Information
Enphase Energy UK Ltd.
Fairbourne Drive, Atterbury
Milton Keynes, MK10 9RG
United Kingdom
Phone: [phone]
http://www.enphase.com/uk
[email protected]
Other Information
For warranty text refer to http://www.enphase.com/uk/warranty.
Product information is subject to change without notice. All trademarks are recognised as the property of their
respective owners.
Copyright © 2012 Enphase Energy. All rights reserved.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
3
Table of Contents
Important Safety Information..........................................................................................................................4!
Read this First ..................................................................................................................................4!
Safety Instructions ............................................................................................................................4!
The Enphase Microinverter System................................................................................................................5!
How the Microinverter Works............................................................................................................6!
System Monitoring........................................................................................................................6!
Optimal Reliability .........................................................................................................................6!
Ease of Design .............................................................................................................................6!
Enphase Microinverter Installation..................................................................................................................7!
Compatibility and Capacity ...............................................................................................................7!
Electrical Compatibility..................................................................................................................7!
Capacity .......................................................................................................................................7!
Parts and Tools Required .................................................................................................................8!
Enphase Equipment .....................................................................................................................8!
Other Items...................................................................................................................................8!
Lightning Surge Suppression............................................................................................................8!
Installation Procedure .......................................................................................................................9!
Step 1 –Measure AC Voltage at the Electricity Network Connection ................................................9!
Step 2 –Install the AC Branch Circuit Junction Box........................................................................10!
Step 3 –Position the Enphase Engage Cable .................................................................................11!
Step 4 –Attach the Microinverters to the Mounting Rail..................................................................12!
Step 5 –Dress the Engage Cable ...................................................................................................13!
Step 6 –Connect the Microinverters...............................................................................................14!
Step 7 –Terminate the Unused End of the Engage Cable...............................................................15!
Step 8 –Connect the Engage Cable to AC Junction Box(es) ..........................................................16!
Step 9 –Complete the Installation Map ..........................................................................................17!
Use the Enphase Installation Map ...............................................................................................17!
Alternative: Create Your Own Map.............................................................................................17!
Step 10 –Connect the PV Modules................................................................................................17!
Step 11 –Build the Virtual Array .....................................................................................................18!
Commissioning and Operation.....................................................................................................................19!
Commission the System.................................................................................................................19!
Operating Instructions ....................................................................................................................19!
Troubleshooting...........................................................................................................................................20!
Status LED Indications and Error Reporting....................................................................................20!
Startup LED Operation: ..............................................................................................................20!
Post-Startup LED Indications:.....................................................................................................20!
Reported Faults: .........................................................................................................................20!
Troubleshoot an Inoperable Microinverter .......................................................................................21!
Disconnect a Microinverter from the PV Module .............................................................................22!
Install a Replacement Microinverter.................................................................................................23!
Technical Data.............................................................................................................................................24!
Technical Considerations................................................................................................................24!
Technical Specifications .................................................................................................................25!
Enphase Installation Map................................................................................................................27!
Sample Wiring Diagram –M215, 230 Vac, Single-Phase ................................................................28!
Sample Wiring Diagram –M215, Three-Phase................................................................................29!

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
4
Important Safety Information
Read this First
This manual contains important instructions for use during installation and maintenance of the Enphase M215™
Microinverter.
To reduce the risk of electrical shock, and to ensure the safe installation and operation of the Enphase
Microinverter, the following safety symbols 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
•Do not use Enphase equipment in a manner not specified by the manufacturer. Doing so may
cause death or injury to persons, or damage to equipment.
•Perform all electrical installations in accordance with all applicable local electrical standards.
•Be aware that only qualified personnel should install or replace Enphase Microinverters.
•Do not attempt to repair the Enphase Microinverter; it contains no user-serviceable parts. If it fails,
please contact Enphase customer service to obtain an RMA (return merchandise authorisation)
number and start the replacement process. Tampering with or opening the Enphase Microinverter
will void the warranty.
•Before installing or using the Enphase Microinverter, please read all instructions and cautionary
markings in the technical description and on the Enphase Microinverter System and the PV
equipment.
•Obtain proper approval for the installation from the authorities having jurisdiction.
•Be aware that the body of the Enphase Microinverter is the heat sink. Under normal operating
conditions, the temperature is 15°C above ambient, but under extreme conditions the microinverter
can reach a temperature of 80°C. To reduce risk of burns, use caution when working with
microinverters.
•Do NOT disconnect the PV module from the Enphase Microinverter without first removing AC
power.
•Be aware that the M215 has field adjustable voltage and frequency trip points that you must set
before the system can produce power. Only an authorised installer with the permission and
following requirements of the local electrical authorities should make adjustments.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
5
The Enphase Microinverter System
The Enphase Microinverter System is the world’s most technologically advanced inverter system for use in grid-
connected applications. This manual details the safe installation and operation of the Enphase Microinverter.
The three key elements of an Enphase Microinverter System include the:
•Enphase M215 Microinverter
•Enphase Envoy™ Communications Gateway
•Enphase Enlighten™ web-based monitoring and analysis software
This integrated system maximises energy harvest, increases system reliability, and simplifies design, installation
and management.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
6
How the Microinverter Works
The Enphase Microinverter maximises energy production from your photovoltaic (PV) array. Each Enphase
Microinverter is individually connected to one PV module in your array. This configuration means that an
individual Maximum Peak Power Point Tracker (MPPT) controls each PV module. This ensures that the
maximum power available from each PV module is exported to the electricity network regardless of the
performance of the other PV modules in the array. That is, although individual PV modules in the array may be
affected by shading, soiling, orientation, or PV module mismatch, the Enphase Microinverter ensures top
performance for its associated PV module. The result is maximum energy production from your PV system.
System Monitoring
Once you install the Envoy Communications Gateway and providean Ethernet connection to your broadband
router or modem, the Enphase Microinvertersautomatically begin reporting to the Enphase Enlighten web
server. The Enlighten software presents current and historical system performance trends, and it informs you of
PV system status.
Optimal Reliability
Microinverter systems are inherently more reliable than traditional inverters. The distributed nature of a
microinverter system ensures that there is no single point of system failure in the PV system. Enphase
Microinverters are designed to operate at full power at ambient temperatures as high as 65°C (150°F). The
microinverter housing is designed for outdoor installation and complies with the IP67 regulation:
IP67 protective factor definition: Entirely protected against the effects of dust and immersion.
Ease of Design
PV systems using Enphase Microinverters are very simple to design and install. You will not need string
calculations, and you can install individual PV modules in any combination of PV module quantity, type, age and
orientation. You won’t need to install cumbersome traditional inverters. Each microinverter quickly mounts on
the mounting rail, directly beneath each PV module. Low voltage DC wires connect from the PV module directly
to the co-located microinverter, eliminating the risk of personnel exposure to dangerously high DC voltage.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
7
Enphase Microinverter Installation
Follow the instructions in this section to install Enphase M215™ Microinverters.
WARNING: Be aware that only qualified personnel should connect the Enphase Microinverter
to the electricity network.
WARNING: Be aware that installation of this equipment includes risk of electric shock. Normally
earthed conductors may be unearthed and energised when an earth fault is indicated.
Compatibility and Capacity
The Enphase M215 Microinverters are electrically compatible with most 60-cell PV modules. For more
information, see Technical Data on page 24 of this manual.
WARNING: The M215 may be paired only with a 60-cell PV module.
Refer to the Enphase website (http://www.enphase.com/support/downloads) for a list of electrically compatible
PV modules and approved mounting rail systems. To ensure mechanical compatibility, be sure to order the
correct connector type for both microinverter and PV module from your distributor.
Electrical Compatibility
Model Number
Works with PV Module Type
PV Module Connector Type
M215-60-230-S22
60 cell
MC-4 Type 2 Locking
Capacity
Maximum number of M215s per 20 amp AC Branch Circuit
Service type
Max M215s per AC branch circuit
230V single-phase
17
400V three-phase
27

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
8
Parts and Tools Required
In addition to the microinverters, PV modules, mounting rail, and associated hardware, you will need the
following.
Enphase Equipment
•Enphase Envoy™ Communications Gateway
•Engage Cable, as needed
NOTE: Order the correct Engage Cable type. Use 5G2.5 Engage Cable at sites with three-
phase service, or use 3G2.5 Engage Cable at sites with single-phase service. Check the
labelling on the drop connectors to verify the voltage type.
•Sealing caps, as needed (for any unused drops on the Engage Cable)
•Terminators, as needed (one needed at the end of each AC branch circuit)
•Enphase disconnect tool (number 2 and 3 Phillips screwdrivers can be substituted)
Other Items
•AC Junction boxes
•Gland or strain relief fitting (one per AC junction box)
•Bonding (Earthing)conductor
•Torque wrench, sockets, spanners for mounting hardware
•Adjustable spanner or open-ended spanner (for terminators)
•Tool for PV module locking connectors
•Handheld mirror (to view indicator lights on the undersides of the microinverters)
•Laptop or other computer for Envoy set up
Lightning Surge Suppression
Lightning protection and resulting voltage surge are protected in accordance with BS 7671. It is assumed that
the PV modules are installed in accordance with related standards and that the microinverter is a part of a
broader lightning protection system in accordance with BS 7617.
In some areas, the statistical frequency of lightning strikes near a PV installation is high enough that lightning
protection must be installed as part of an Enphase system. In some areas, a surge protection device might be
mandatory following a risk analysis, according to local regulation, BS 7671.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
9
Installation Procedure
Installing the Enphase Microinverter System involves several key steps. Each step listed below is detailed in the
following pages.
Step 1 – Measure AC Voltage at the Electricity network connection!
Step 2 – Install the AC Branch Circuit Junction Box!
Step 3 – Position the Enphase Engage Cable
Step 4 – Attach the Microinverters to the Mounting Rail!
Step 5 – Dress the Enphase Engage Cable
Step 6 –Connect the Microinverters
Step 7 – Terminate the Unused End of the Engage Cable!
Step 8 – Connect the Engage Cable to AC Junction Box(es)!!
Step 9– Complete the Installation Map!
Step 10– Connect the PV Modules
Step 11– Build the Virtual Array
WARNING: DO NOT connect Enphase Microinverters to the electricity network or energise the
AC circuit(s) until you have completed all of the installation procedures as described in the
following sections.
NOTE: Enphase Microinverters will not begin exporting power until the Envoy Communications
Gateway is installed and has detected all of the microinverters at the site. In addition, the grid
profile must be configured and the Envoy must have propagated these settings to the
microinverters. For instructions on this procedure, refer to the Envoy Installation and Operation
Manual at http://www.enphase.com/support/downloads.
Step 1 –Measure AC Voltage at the Electricity Network Connection
Measure AC line voltage at the electricity network connection to confirm that it is within range. Acceptable
ranges are shown in the following table.
Single-Phase Service
Three-Phase Service
L1 to L2 to L3
360 to 440 Vac
L1 to neutral
207 to 253 Vac
L1, L2, L3 to neutral
207 to 253 Vac
NOTE:Be sure the Engage Cable you are using matches the electricity network connection at
the site. Use 5G2.5 Engage Cable at sites with three-phase service, or use 3G2.5 Engage
Cable at sites with single-phase service. Check the labelling on the drop connectors to verify
the voltage type.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
10
Step 2 –Install the AC Branch Circuit Junction Box
DANGER: Risk of Electrical Shock. Be aware that installation of this equipment includes risk of
electric shock. Do not install the AC junction box without first removing AC power from the
Enphase System.
WARNING: Only use electrical system components approved for wet locations.
WARNING: Do NOT exceed the maximum number of microinverters in an AC branch circuit as
listed on page 7of this manual. You must protect each microinverter AC branch circuit with a
20A maximum breaker.
a. Size the AC cable/wire size to account for voltage drop. Select conductor diameter based on the
distance from the beginning of the microinverter AC branch circuit to the breaker in the AC mains.
All components of system wiring must be considered, including internal voltage drop within the
length of Engage Cable. Typically, three wire sections and several wire terminations must be
quantified. There is also some resistance associated with each circuit breaker. As all of these
resistances are in series, they add together. Since the same current is flowing through each
resistance, the total voltage drop is total current times the total resistance. For a single-phase
system, the total resistance is equal to two times the one-way resistance. For a three-phase
system, each of the three line currents and resistances must be calculated.
Standard guidelines for voltage drop on feeder and AC branch circuit conductors might not be
sufficient for microinverter AC branch circuits that contain the maximum allowable microinverters.
This is due to high inherent voltage rise on the AC branch circuit.
For more information, refer to our Technical Brief, Voltage Drop Considerations for M215, at
http://www.enphase.com/support/downloads.
b. Install an appropriate junction box at a suitable location on the mounting system. You can centre
feed the branch, or you can install the junction box at the end of a row of PV modules.
c. Provide an AC connection from the AC junction box back to the electricity network connection
using equipment and practices as required by local jurisdictions.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
11
Step 3 –Position the Enphase Engage Cable
The Engage Cable is a continuous length of 2.5 mm2, outdoor rated cable with integrated connectors for
microinverters. These connectors are preinstalled along the Engage Cable at intervals to accommodate PV
module widths. The microinverters plug directly into the connectors, and the Engage Cable is terminated into
the junction box that feeds electricity back to the system AC disconnect.
NOTE: Make sure you are using the correct cable type. Use 5G2.5 Engage Cable at sites
with three-phase service, or use 3G2.5 Engage Cable at sites with single-phase service. Check
the labelling on the drop connectors to verify the voltage type.
a. Lay the Engage Cable along the route it will travel, positioning the connectors so that they align with
the PV modules.
WARNING: Plan the AC branches so that they do not exceed the maximum number of
microinverters in an AC branch circuit as listed on page 7of this manual. You must protect
each microinverter AC branch circuit with a 20A maximum breaker.
NOTE: Many PV modules have a central stiffening brace. In these cases, do not position the
connector and microinverter at the exact centre of the PV module. Instead, position the drop
connectors so that the connectors do not conflict with the braces.
b. PV module widths vary by manufacturer. On the Engage Cable, connectors are spaced at intervals
to allow for the widest PV modules compatible with Enphase Microinverters. If narrower PV
modules are used, it may be necessary to account for excess cable by looping the cable at suitable
intervals.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
12
Step 4 –Attach the Microinverters to the Mounting Rail
a. Mark the approximate centresof each PV module on the mounting rail.
b. Evaluate the location of the microinverter with respect to the PV module DC junction box or any
other obstructions.
•Ensure that the microinverter does not interfere with the PV module frame or stiffening braces.
•Ensure that the connector from the microinverter can easily reach the connector on the Engage
Cable.
c. Allow a minimum of 1.9 cm (0.75 inches) between the roof and the bottom of the microinverter.
Also allow 1.3 cm (0.50 inches) between the back of the PV module and the top of the
microinverter.
WARNING: Do not mount the microinverter in a location that allows long-term exposure to
direct sunlight (i.e., the microinverter should be covered by the PV module).
d. With the silver side of the microinverter
facing up and the black side facing down,
mount one microinverter at each location
using suitable hardware. The indicator light
on the underside of the microinverter will be
facing the roof.
NOTE: Installing the microinverter black
side up is not recommended as it may
allow moisture to collect between the
cover and the body of the
microinverter. If installing the M215 at
an angle, check that this angle does
not allow for collection of water in the
recesses of the microinverter.
e. Torque the microinverter fasteners to the
values below.
•6 mm (1/4”) mounting hardware –5 N m (45 in-lbs) minimum
•8 mm (5/16”) mounting hardware –9 N m (80 in-lbs) minimum
NOTE: Using a power screwdriver to tighten the screws is not recommended due to the risk of
thread galling.
f. If you are using a bonding (earthing)electrode conductor to earth the microinverter chassis, attach
the earthing electrode conductor to the microinverter earthing screw.
g. Torque the 10/32 earthing cleat screw to 2 N m (20 in-lbs) minimum. Each Enphase Microinverter
comes with an earthing clip that can accommodate a 10-16mm2conductor. You may also earth
the mounting rail and PV module to this conductor using a crimp connection.
NOTE: The AC output neutral is not bonded to earth inside the microinverter.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
13
Step 5 –Dress the Engage Cable
a. Attach the Engage Cable to the mounting rail using clips or tie wraps.
NOTE: There are two release-holes in the drop connector on the cable. These are not for
mounting but are used to disconnect the connector. Keep these release holes clear and
accessible.
b. Dress any excess in loops so that the Engage Cable does not contact the roof.
There are several ways to support the cable. One method is to place tie wraps or clips on either
side of the connector. Use one or two additional clips, tie wraps, or other support scheme to
secure the cable between connectors.
release holes

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
14
Step 6 –Connect the Microinverters
a. Remove and discard the temporary shipping cap from the
Engage Cable and connect the microinverter. There are
two latching mechanisms within the connectors. Listen for
two clicks as the connectors engage. Ensure that both
latching mechanisms have engaged.
b. Repeat for all microinverters in the AC branch circuit.
c. Cover any unused connector with a sealing cap. Listen for
two clicks as the connectors engage. Ensure that
both latching mechanisms have engaged.
NOTE: Do not use the shipping cap to cover
unused connectors. The shipping cap does not
provide an adequate environmental seal.
Enphase sealing caps are required for the
system to compliant to regulation and to protect
against moisture ingress.
Enphase sealing caps are IP67 rated. Within the term “IP67”, “IP” indicates an Ingress
Protection (IP) rating against dust and liquids. This specific rating of IP67 indicates that this
connector protects against all dust particles and immersion in liquid.
WARNING: Make sure protective sealing caps have been installed on all unused AC
connectors. Unused AC connectors are live when the system is energised by the electricity
network. Sealing caps may not be reused.
NOTE: If you need to remove a sealing cap, you must use the Enphase disconnect tool or a #3
Phillips screwdriver. Sealing caps may not be reused.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
15
Step 7 –Terminate the Unused End of the Engage Cable
Terminate the far end of the Engage Cable as follows.
a. Remove 60mm (2.5 inches) of the cable sheath from the conductors.
b. Slide the hex nut onto the Engage
Cable.
c. Insert the Engage Cable all the way
into the wire organiser (up to the
stop).
d. Bend the individual wires back into
the recesses in the wire organiser so
that they angle back toward the
cable.
e. Cut the individual wires so that no excess extends
outside of the wire organiser. The portions that
angle back will need to extend enough to fit neatly
into the 0.5 cm (0.2 in) recesses in the wire
organiser and flush with the edge of the cap.
f. Screw the hex nut onto the cap. Never unscrew
the hex nut as this can twist and damage the
cable.
g. Hold the cap with an Enphase disconnect tool, or
insert a #2 Phillips screwdriver.
h. Use a 22mm (7/8 inch) spanner to tighten the hex nut until the latching mechanism is screwed all
the way to the base.
i. Use a tie wrap or cable clip to attach the cable to the mounting rail, so that the Engage Cable and
terminator do not touch the roof.
j. Ensure that all cabling is located underneath the PV module.
hex nut
wire organiser
cap

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
16
Step 8 –Connect the Engage Cable to AC Junction Box(es)
a. Connect Engage Cable into the AC branch circuit junction box using an appropriate gland or strain
relief fitting. The Engage Cable requires a strain relief connector with an opening of 1.3 cm (0.5
inches) in diameter.
b. Connect the Engage Cable into additional
AC junction boxes as needed to transition to
conduit between smaller sub-arrays.
Refer to the wiring diagrams located on
page 28 for more information.
Single-phase 3G2.5
Three-phase 5G2.5
L1 - Brown
L1 - Brown
(not present)
L2 - Black
(not present)
L3 - Grey
Neutral - Blue
Neutral - Blue
Earth – Green / yellow
(acts as equipment earth)
Earth – Green / yellow
(acts as equipment earth)
Wires are identified as follows. For 400 Vac, L1 is sheathed in brown, L2 is sheathed in black, L3 is
sheathed in grey, Neutral is sheathed in blue, and protective earth is sheathed in green/yellow. The
earthing wire is used to earth the microinverters. For single-phase, L2 and L3 are not present.
Balanced 400 Vac (3-phase) is accomplished by alternating phases between microinverters as
shown:

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
17
Step 9 – Complete the Installation Map
The Enphase Installation Map is a diagrammatic representation of the physical location of each microinverter in
your PV installation. The virtual array in Enlighten is created from the map you create. Use the blank map on
page 27 to record microinverter placement for the system, or provide your own layout if a larger or more
intricate installation map is required.
Use the Enphase Installation Map
a. Each Enphase Microinverter has a removable serial number label located on the mounting plate.
Peel the removable serial number label from each Enphase Microinverter and affix it to the
respective location on the Enphase installation map (see map on page 27). Remember to keep a
copy of the installation map for your records.
Alternative: Create Your Own Map
a. Draw a top-down view of the array using the Array Map template (using either the grid on Side A or
the freeform area on Side B). Make sure to leave enough room to place the serial number stickers.
b. When installing the microinverters, remove the serial number labels located next to the DC input
cables and place them in the correct order on your drawing of the system. Remember to keep a
copy of the installation map for your records.
Step 10 – Connect the PV Modules
NOTE: Completely install all microinverters and all
system AC connections prior to installing the PV
modules.
a. Mount the PV modules above the microinverters.
b. Mate the microinverters and PV modules as required.
Repeat for all remaining PV modules using one
microinverter for each PV module.
WARNING: The M215 can be paired only with a 60-
cell PV module.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
18
Step 11 – Build the Virtual Array
When the system is energised and the Envoy detects all the installed microinverters, you can create the virtual
array in Enlighten from the installation map you created. Once the virtual array is built, Enlighten displays a
graphic representation of the PV system. It also shows detailed current and historical performance information.
Please go to http://www.enphase.com/uk for more information on the Enphase Enlighten web-based
monitoring and analysis.
a. Scan the installation map and upload it to the Activation form online.
b. Use Array Builder to create the virtual array in Enlighten. Use the installation map created in step 10
as your reference.
NOTE: Go to
http://enphase.com/support/videos/ to view the Array Builder demo.
c. If you do not already have an account, go to http://www.enphase.com/uk and click “Enlighten
Login” to register.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
19
Commissioning and Operation
WARNING:Be aware that only qualified personnel must connect the Enphase Microinverter to
the electricity network.
WARNING:Ensure that all AC and DC wiring is correct. Ensure that none of the AC and DC
wires are pinched or damaged. Ensure that all AC junction boxes are properly closed.
NOTE:Obtain proper approval for the installation from the authorities having jurisdiction.
NOTE:The Status LED on the underside of each microinverter will blink green six times to
indicate normal start-up operation approximately two minutesafter DC power is applied.
REMINDER: Enphase Microinverters will not begin exporting power until the Envoy
Communications Gateway is installed and has detected all of the microinverters at the site. In
addition, the grid profile must be configured and the Envoy must have propagated these
settings to the microinverters.
For instructions on installing the Envoy and configuring the grid profile, refer to the Envoy
Installation and Operation Manual at http://www.enphase.com/support/downloads.
Commission the System
To commission the Enphase Microinverter PV system:
1. Turn ON the AC disconnect or circuit breaker (such as an isolation switch) for each microinverter
AC branch circuit.
2. Turn ON the main AC switch.
3. The Enphase Microinverters will begin communicating over the power lines to the Envoy. The time
required for all microinverters to report to the Envoy will vary with the number of microinverters in
the system. The first units should be detected within 15 minutes. After that, the Envoy will detect
approximately four microinverters per minute.
4. You will need to configure the microinverters with the appropriate grid profile before they can
produce power. For instructions on this procedure, refer to the Envoy Installation and Operation
Manual at http://www.enphase.com/support/downloads.
NOTE:If the Envoy has not been set up with a grid profile for the microinverters, they will not
produce energy. The microinverters must be configured with the appropriate grid profile as part
of the commissioning process.
Operating Instructions
The Enphase Microinverter is powered on when sufficient DC voltage from the PV module is applied. The Status
LED of each microinverter will blink green six times to indicate normal start-up operation approximately two
minutesafter DC power is applied. You may need to use a handheld mirror to view indicator lights on the
undersides of the microinverters.

M215 Installation and Operation
Copyright ©2012 Enphase Energy 141-00021 Rev 01
20
Troubleshooting
Adhere to all the safety measures described throughout this manual. Qualified personnel can use the following
troubleshooting steps if the PV system does not operate correctly.
WARNING: Do not attempt to repair the Enphase Microinverter; it contains no user-serviceable
parts. If it fails, please contact Enphase customer service to obtain an RMA (return
merchandise authorisation) number and start the replacement process.
Status LED Indications and Error Reporting
Startup LED Operation:
The Status LED of each microinverter will blink green six times to indicate normal start-up operation
approximately two minutesafter DC power is applied.
Six short red blinks after DC power is first applied to the microinverter indicate a failure during microinverter
startup.
Post-Startup LED Indications:
Use a handheld mirror to view indicator lights on the undersides of the microinverters. LED states are:
a. Flashing Green: AC grid valid and communicating with Envoy
b. Flashing Orange: AC grid valid but not able to communicate with Envoy
c. Flashing Red: Not producing power. AC grid invalid (Voltage or Frequency). This may happen
when the microinverters have not yet been configured with a Grid Profile.
d. Solid Red plus flashing Green: DC input earth resistance fault active, AC grid valid and
communicating with Envoy
e. Solid Red plus flashing Orange: DC input earth resistance fault active, AC grid valid but not able
to communicate with Envoy
f. Solid Red: DC input earth resistance fault active and the AC grid is invalid. This may happen when
the microinverters have not yet been configured with a Grid Profile.
Reported Faults:
All faults are reported to the Envoy. Refer to the Envoy Installation and Operation Manual for
troubleshooting procedures.