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Indicator Lights for YC600 and QS1 APsystems Microinverters


Start-Up LED: One short red blink followed by three short green blinks when DC power is first applied to the microinverter will indicate that the microinverter has been successfully connected.


Producing Power/Communicating with ECU: A slow flashing green light with a ten-second gap between blinks.


Producing Power/Not Communicating with ECU: A quick flashing green light with a two-second gap between blinks.


Not Producing Power: A flashing red light.


Ground Fault Detector Interrupter (GFDI) Error: A solid red light.


All other potential faults in the system will not be indicated by a light on the microinverter but instead will be reported to the ECU and will be observable on the APSystems EMA platform.