Troubleshooting; Status Led Indications And Error Reporting; Start-Up Led Operation; Post-Start-Up Led Indications - enphase M250 Installation And Operation Manual

Enphase Microinverter Installation and Operation

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: Risk of electric shock. Do not attempt to repair the Enphase Microinverter; it
contains no user-serviceable parts. If it fails, contact Enphase customer service to obtain
an RMA (return merchandise authorisation) number and start the replacement process.

Status LED Indications and Error Reporting

Start-up LED Operation

The status LED on the underside of each microinverter lights green about six seconds after DC
power is applied. It remains lit solid for two minutes, followed by six green blinks. After that, red
blinks indicate that no grid is present if the system is not yet energised.
Six short red blinks after DC power is first applied to the microinverter indicate a failure during
microinverter start-up.

Post-Start-up LED Indications

Use a handheld mirror to view indicator lights on the undersides of the microinverters. LED states are:

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.
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LED on
underside
of micro-
inverter
141-00024 Rev 02b