IQ7/IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
27 © 2023 Enphase Energy Inc. All rights reserved. September 2023
IOM-00028-1.0
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 the range.
O. If the problem persists, contact Enphase Support at enphase.com/en-
us/support/contact.
4.3 Disconnect a microinverter
If problems remain after following the troubleshooting steps listed previously, contact Enphase at
enphase.com/en-us/support/contact. If Enphase authorizes a replacement, follow the steps below.
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 there is no current flowing in the DC wires between the PV
module and the microinverter. If the current is still flowing, check that you have
completed steps one and two above.
NOTE: Take care when measuring the DC, as most clamp-on meters must be zeroed
first and tend to drift with time.
E. Disconnect the PV module DC connectors from the microinverter using the disconnect
tool from the manufacturer of the mating DC connector from the PV module connector.
F. If present, loosen and/or remove any bonding hardware.
G. Remove the microinverter from the PV racking.
WARNING: Risk of electric shock. Risk of fire. Do not leave any connectors on the PV
system disconnected for an extended period. If you do not plan to replace the
microinverter immediately, you must cover any unused connector with a sealing cap.
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