IQ8AC/IQ8HC Installation and Operation Manual
20 © 2023 Enphase Energy Inc. All rights reserved. June 2023
USM-00005-2.0
Step 10: Energize the system
A. Turn ON the AC disconnect or circuit breaker for the branch circuit.
WARNING: If the breaker trips straight away on a multi-phase system, DO NOT try to energize again
until you have verified all the AC and IQ Cable wiring to ensure the active and neutral connections
are consistent and correct.
B. Turn ON the main utility-grid AC circuit breaker. Your system will ramp up to full producing power
after grid profile propagation and device provisioning are completed. It may take 20-30 minutes for
full power production based on the number of microinverters in the system.
C. Check the LED on the connector side of the microinverter:
LED colour Indicates
Flashing green
Normal operation. AC grid function is normal and there is communication with
the IQ Gateway. IQ8 Series Microinverter’s LED will be flashing green only
The AC grid is normal but there is no communication with the IQ Gateway
Flashing red The AC grid is either not present or not within the specification
Solid red
There is an active “DC Resistance Low, Power Off” condition. To reset, refer
to the IQ Gateway Installation and Operation Manual at:
https://enphase.com/en-au/installers/resources/documentation. If the
problem persists, measure resistance between PV+ to EARTH and then PV- to
EARTH on the PV module and then inverter. Anything less than ~7 kΩ will
trigger the “DC Resistance Low - Power Off” condition. Usually, the value is in
MΩ on the inverter or PV module. Swap out faulty PV module or microinverter.
Refer to the IQ Gateway Quick Install Guide to install the gateway and set up system monitoring and grid
management functions.
Set up and activate monitoring
Refer to the IQ Gateway Quick Install Guide to install the gateway and set up system monitoring and grid
management functions. This guide leads you through the following:
• Connecting the gateway
• Detecting devices
• Connecting to the Enphase Installer Platform
• Registering the system
• Building the virtual array
NOTE: When the electricity network operator requires a grid profile other than the profile set on
the microinverter, you must select an appropriate grid profile for your installation. Your system will
ramp up to full power after grid profile propagation and device provisioning is completed. It may
take 20-30 minutes for full power production based on the number of microinverters in the
system.
You can set the grid profile through the Enphase Installer Platform during system registration or
through Enphase Installer App at any time. You must have an IQ Gateway to set or change the grid
profile. For more information on setting or changing the grid profile, refer to the IQ Gateway
Installation and Operation Manual at
https://enphase.com/en-au/installers/resources/documentation.
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