Troubleshooting
Adhere to all the safety measures described throughout this manual. Qualified
personnel can use the following troubleshooting steps if the PV system does not
operate correctly.
WARNING: Do not attempt to repair the Enphase Microinverter; it
contains no user-serviceable parts. If it fails, please contact Enphase
customer service to obtain an RMA (return merchandise authorization)
number and start the replacement process.
Status LED Indications and Error Reporting
Startup LED Operation:
The Status LED of each microinverter will blink green six times to indicate normal
start-up operation approximately one minute after DC power is applied.
Six short red blinks after DC power is first applied to the microinverter indicate a
failure during microinverter startup.
Post-Startup LED Indications:
Use a handheld mirror to view indicator lights on the undersides of the
microinverters:
•
Flashing Green – AC grid valid and communicating with Envoy
•
Flashing Orange – AC grid valid but not able to communicate with Envoy
•
Flashing Red – Not producing power. AC grid invalid (Voltage or
Frequency). This may happen when the microinverters have not yet been
configured with a Grid Profile.
•
Solid Red plus flashing Green – DC input earth resistance fault active,
AC grid valid and communicating with Envoy
•
Solid Red plus flashing Orange – DC input earth resistance fault active,
AC grid valid but not able to communicate with Envoy
•
Solid Red – DC input earth resistance fault active and the AC grid is
invalid. This may happen when the microinverters have not yet been
configured with a Grid Profile.
Reported Faults:
All faults are reported to the Envoy. Refer to the Envoy Installation and
Operation Manual for troubleshooting procedures.
Troubleshooting an Inoperable Microinverter
WARNING: Be aware that only qualified personnel should troubleshoot
the PV array or the Enphase Microinverter.
WARNING: Never disconnect the DC wire connectors under load. Ensure
that no current is flowing in the DC wires prior to disconnecting. An
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Copyright Enphase Energy Inc. 2011
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