DMEGC AC Module Installation Manual
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G. Visually check that the AC branch circuit connections (Enphase Q 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 re-connect the Enphase DC 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.
J. Attach an ammeter clamp to one conductor of the DC cables from the PV module to measure microinverter
current. This will be under one amp if AC is disconnected.
K. 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 Enlighten
periodically (this may take up to 30 minutes), the problem moves to the adjacent module, this indicates that
the PV module is not functioning correctly. If the problem stays in place the problem is with the original
microinverter. Contact Enphase Customer Support for help in reading the 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 line frequency is within range.
O. If the problem persists, contact Customer Support at enphase.com/en-us/support/contact.
5.3 Remove and Replace 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 Enphase Q Cable,
insert the disconnect tool and remove the connector.
C. Remove the AC Module from the roof per manufacturer instructions.
D. Once on the ground, disconnect the PV module DC connector from the microinverter using the Enphase
