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Install a Replacement Microinverter
If problems remain after troubleshooting, contact Enphase Energy customer support at
. If Enphase authorizes a replacement (RMA), replace the microinverter as follows:
us/support/contact
1. When the replacement microinverter is available, verify that the AC branch circuit breaker is
de-energized.
2. Attach the replacement microinverter to the PV racking using hardware recommended by
your PV racking vendor.
WARNING: Risk of equipment damage. You must install the Enphase Microinverter
under the module, out of rain and sun. Do not mount the microinverter in a position that
allows long-term exposure to direct sunlight or in a vertical orientation that allows water to
collect in the DC connector recess. Do not install the microinverter black-side up or
vertically, with the DC connectors facing up.
3. Torque the microinverter 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)
NOTE: Using a power screwdriver to tighten the fasteners is not recommended due to
the risk of thread galling.
4. Connect the microinverter to the Engage Cable drop connector. There are two latching
mechanisms within the connectors. Listen for two clicks as the connectors engage. Ensure
that both latching mechanisms have engaged.
5. Mount the PV module above the microinverter.
6. Mate the microinverter and PV module as required.
7. Energize the AC branch circuit breaker, and verify operation of the replacement microinverter
by checking the indicator light on the underside of the microinverter. You may need a
handheld mirror to see the indicator light.
8. Initiate a device scan at the Envoy. To do this, press and hold the Menu button on the Envoy
for two seconds to bring up the Envoy menu on the LCD window. When the LCD window
displays "Enable Device Scan", release the Menu button. This starts a 30-minute scan at the
Envoy to discover the new microinverter.
9. Use Enlighten's Array Builder to add the newly detected microinverter to the virtual array.
10. Ship the old microinverter to Enphase using the supplied return-shipping label.
31
2015 Enphase Energy Inc. All rights reserved.
C250 System Installation and Operation
enphase.com/en-
141-00025 Rev 03
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