Installation/User Manual
13
Troubleshooting
Qualified personnel should use the following troubleshooting steps if the PV system is inoperative:
Status Indications and Error Reporting
Start up LED
One minute after DC power is first applied to the microinverter, one short red blink indicates a
successful microinverter startup sequence. If two or more short red blinks occur after DC
power is first applied to the microinverter, a failure during microinverter setup has occured.
Operation LED
•
Flashing Slow Blue
- a small amount of power is produced.
•
Flashing Fast Blue -
large amounts of power are produced.
•
Flashing Red
- Not producing power
•
Red blinking twice
- AC low-voltage or high-voltage
•
Red blinking three times
- Grid malfunction
GFDI Error
If the LED blinks four times, it indicates that the Microinverter has detected a Ground Fault
Detector Interrupter (GFDI) error in the PV system. Unless the GFDI error has been cleared, the
LED will continue to blink 4 times in sequence.
Other Errors
All other errors are reported to the DMU. Refer to the DMU Installation and Operation Manual
for a list of additional errors and troubleshooting procedures.
WARNING:
Only qualified personnel should directly handle the
microinverter.
WARNING:
Never disconnect the DC wire connectors under load. Ensure that no
current is flowing in the DC wires prior to disconnection. An opaque covering may be
used to protect the module prior to disconnecting the module.
WARNING:
Always disconnect the AC power before disconnecting the PV module
wires from the microinverter. Either disconnect through the appropriate AC circuit
breaker, or unplugging the AC connector to the first microinverter of a branch
circuit. Both are suitable as a means of
disconnection.
WARNING:
The microinverter is powered by the PV module DC power. AFTER
disconnecting the DC power, when reconnecting the PV modules to the
microinverter, pay attention for the three short LED flashes.
Troubleshooting
