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Disconnect a Microinverter
If problems remain after following the troubleshooting steps listed previously, contact Enphase at
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 Enphase QD
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 current is still flowing, check that
you have completed steps one and two above.
NOTE: Take care when measuring DC current as most
clamp-on meters must be zeroed first and tend to drift
with time.
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 bracket side up and under
the PV module, away from rain and sun. Allow a
minimum of 1.9cm (0.75") between the roof and the
Microinverter. Also allow 1.3cm (0.50") between the
back of the PV module and the top of the Microinverter
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.
•
Do not mount the Microinverter upside down.
© 2022 Enphase Energy Inc. All rights reserved.
E. Disconnect the PV module DC wire connectors from
the Microinverter using the Enphase 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 a sealing cap.
•
Do not expose the AC or DC connectors (on the
Enphase QD Cable connection, PV module, or the
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") mounting hardware: 5 N m (45 to 50
in-lbs.).
•
8 mm (5/16") 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
IQ8D-DG-MKT-00397-02-EN-US-2022-06-10
enphase.com/en-us/
75
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Table of Contents
Troubleshooting
