APsystems EZ1 Series - Troubleshooting; Status Indications and Error Reporting; Troubleshooting Guide Reference; APsystems Technical Support

APsystems Microinverter EZ1 series User manual
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6. Troubleshooting
Users can use the following troubleshooting steps if the PV system does not operate correctly:
6.1 Status Indications and Error Reporting
Assuming they are easily accessible and visible, Operation LEDs can give a good indication of the microinverters
status
6.1.1 Start up LED
Ten short green blinks when DC power is first applied to the Microinverter indicates a successful Microinverter
startup.
6.1.2 Operation LED
Flashing Slow Green (5 sec. gap) - Producing power and the Microinverter is in normal working status.
Flashing Slow Red (5 sec. gap) - The Microinverter is in protection status or disconnected from grid.
6.1.3 GFDI Error
A solid red LED indicates the Microinverter has detected a Ground Fault Detector Interrupter (GFDI) error in the PV
system. Please check if the DC inputs of the inverter are mistakenly connected to ground or contact your local
APsystems Technical Support.
6.2 Trouble Shooting Guide
Professional Users can also refer to our Troubleshooting Guide (https://emea.apsystems.com/resources/library/,
section libraries)for more in depth guidelines on how to troubleshoot and fix PV installations powered by APsystems
microinverters.
6.3 APsystems Technical Support
The APsystems local Technical Support team is available to support professional installers in becoming familiar with
our products and to troubleshoot installations when needed.
Do not attempt to repair APsystems Microinverters. Please contact your local APsystems Technical Support.
①. Never disconnect the DC wire connectors under load. Ensure that no current is flowing in the DC wires prior to
disconnecting.
②. Always disconnect AC power before disconnecting the PV module wires from the APsystems Microinverter.
③. The APsystems Microinverter is powered by PV module DC power. AFTER disconnecting the DC power, when
reconnecting the PV modules to the Microinverter, be sure to watch for the ten short green LED flashes.
6.4 Maintenance
APsystems microinverters do not require any specific regular maintenance.