Remove And Replace A Microinverter - enphase IQ7 Installation And Operation Manual

F. Verify that utility power is present at the microinverter by measuring line-to-line and line-to-ground
at the IQ Cable connector.
G. Visually check that the AC branch circuit connections (IQ Cable and AC connections) are properly
seated. Reseat if necessary. Check also for damage, such as rodent damage.
H. Make sure that any upstream AC disconnects, as well as the dedicated circuit breakers for each AC
branch circuit, are functioning properly and are closed.
I. Disconnect and reconnect the DC PV module connectors. The status LED of each microinverter will
light solid green a few seconds after connection to DC power and then blink green six times to
indicate normal start-up operation about two minutes after connecting to DC power. The LED
subsequently resumes normal operation if the grid is present. For more information, see
operation.
J. Attach an ammeter clamp to one conductor of the DC cables from the PV module to measure the
microinverter current. This will be under one amp if AC is disconnected.
K. Verify the PV module DC voltage is within the allowable range shown in the
manual.
L. Following the steps in Remove and Replace a Microinverter, remove the PV panel from the roof, and
swap out the microinverter with one from a known good, adjacent AC Module. If, after checking
Enphase App periodically (this may take up to 30 minutes), the problem moves to the adjacent
module, this indicates that the PV module isn't functioning correctly. If it stays in place, the problem
is with the original microinverter. Contact
microinverter data and for help in obtaining a replacement microinverter, if needed.
M. Check the DC connections between the microinverter and the PV module. The connection may
need to be tightened or reseated. If the connection is worn or damaged, it may need replacement.
N. Verify with your utility that the line frequency is within range.
O. If the problem persists, contact Enphase customer support at
us/support/global-contact.

Remove and replace a microinverter

If problems remain after following the troubleshooting steps listed previously, contact customer support at
https:/ /enphase.com/en-us/support/global-contact. If Enphase authorizes a replacement, follow the steps.
To ensure the microinverter is not disconnected from the PV modules under load, follow the disconnection
steps in the order shown:
A. De-energize the AC branch circuit breaker.
B. Enphase AC connectors are tool-removable only. To disconnect the microinverter from
the IQ Cable, insert the IQ Disconnect Tool and remove the connector.
C. Remove the AC Module from the roof per the manufacturer's instructions.
D. Once on the ground, disconnect the PV module DC connector from the microinverter using
the IQ Disconnect Tool.
E. Press each of the four clips to free the microinverter.
F. Snap a new replacement microinverter into place.
G. Connect the PV module DC connectors to the microinverter.
H. Scan the new serial number.
NOTE: The serial number of the replacement microinverter will be different from the serial number
on the AC Module frame.
23
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IQ Microinverters for AC Module applications
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Specifications of this
June 2023
USM-00001-1.0