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M. Verify with your utility that the line frequency is within range.
N.
If the problem persists, contact Enphase Support at
Disconnect a microinverter
If problems remain after following the troubleshooting steps, contact Enphase Support at
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.
IQ Cable AC connectors are tool-removable only. To disconnect the microinverter from the IQ Cable, insert
the IQ Disconnect Tool and remove the connector.
C. Cover the PV module with an opaque cover.
Using a clamp meter, verify there is no current flowing in the DC wires between the PV module and the
D.
microinverter. If the current is still flowing, check that you have completed steps A, B, and C above.
NOTE: Take care when measuring DC, as most clamp meters must be zeroed first, as these tend to drift with
time.
E.
Disconnect the PV module DC wire connectors from the microinverter using the IQ Disconnect Tool.
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 an IQ Sealing Cap.
Install a replacement microinverter
A.
When the replacement microinverter is available, verify that the AC branch circuit breaker is de-energized.
B.
Mount the microinverter horizontally bracket side up or vertically:
•
Always place the microinverter under the PV module, protected from direct exposure to rain, sun, and
other harmful weather events. Allow a minimum of 1.9 cm (3/4 in) between the roof and the
microinverter. Also, allow 1.3 cm (1/2 in) between the back of the PV module and the top of the
microinverter.
•
For vertical mount, maintain > 30 cm (12 in) clearance from the edges of the PV module to protect the
microinverter from direct exposure to rain, UV, and other harmful weather events.
WARNING: Risk of equipment damage. Mount the microinverter under the PV module.
•
Install the microinverter under the PV module to avoid direct exposure to rain, UV, and other harmful
weather events.
•
Always install the microinverter bracket side up for horizontal mount installations.
•
Do not mount the microinverter upside down.
•
Do not expose the AC or DC connectors (on the IQ Cable connection, PV module, or microinverter) to
rain or condensation before the connectors are mated.
C. Torque the mounting fasteners to the values shown. Do not over-torque.
•
6 mm (1/4 in) mounting hardware: 5 N m (45 to 50 in-lbs.).
•
8 mm (5/16 in) mounting hardware: 9 N m (80 to 85 in-lbs.).
•
When using UL 2703 mounting hardware, use the manufacturer's recommended torque value.
D.
If you are using bonding hardware, the old bonding hardware should be discarded, and new bonding hardware
must be used when installing the replacement microinverter.
E.
Connect the microinverter to the IQ Cable connector. Listen for a click as connectors engage.
27
IQ8MC, IQ8AC, IQ8HC, and IQ8X Microinverters Installation and Operation Manual
© 2023 Enphase Energy Inc. All rights reserved.
Enphase
Support.
Enphase Support.
If
November 2023
USM-00008-2.0
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