Disconnect A Microinverter - enphase IQ7+ Installation And Operation Manual

D. Verify that the AC line voltage at the junction box for each AC branch circuit at the site is within
range:
L1 to N
E. Using an IQ Disconnect Tool, disconnect the AC cable for the microinverter in question from the IQ
Cable.
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 startup operation about two minutes after connecting to DC power. The LED
subsequently resumes normal operation if the grid is present. For more information, see the
operation in this manual.
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 the AC is disconnected.
K. Verify that the PV module DC voltage is within the allowable range shown in the
section in this manual.
L. Swap DC leads with a known good, adjacent PV module. If, after checking the 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
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

Disconnect a microinverter

If problems remain after following the troubleshooting steps listed previously, 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 disconnect tool and remove the connector.
C. Cover the PV module with an opaque cover.
D. Using a clamp-on meter, verify that no current flows in the DC wires between the PV module and the
microinverter. If the current is still flowing, check that you have completed steps A and B.
NOTE: Take care when measuring the DC current, as most clamp-on meters must be zeroed first
and tend to drift with time.
21
Single-phase service
184 to 276 VAC
Enphase Support
Enphase
© 2023 Enphase Energy Inc. All rights reserved.
IQ7+ and IQ7A Installation and Operation Manual - India
Three-phase service
L1, L2, L3 to N
for help in reading the microinverter data and for
Support.
184 to 276 VAC
LED
Specifications
Enphase Support.
August 2023
USM-00002-1.0