To troubleshoot a non-functioning mikiroinverter, perform the following steps in
order:
1. Check that the mains voltage and frequency are within the ranges shown in
the Technical Data section of this manual.
2. Check the connection to the power grid. Check that the line voltage is present
at the inverter in question by removing the AC current and then the DC current.
Never disconnect the DC leads while the microinverter is generating power.
Reconnect the DC module connectors and watch for three short LED flashes.
3. Check the AC branch circuit connection between all microinverters.
4. Verify that each inverter is energized as described in the previous step.
5. Verify that any AC circuit breaker is functioning properly and is closed.
6. Check that the DC voltage of the photovoltaic module is within the allowable
range indicated in the technical data in this manual.
7. If the problem persists, contact Customer Service.
WARNING:
Do not attempt to repair the microinverter. If troubleshooting me-
thods fail, contact Technical Support.
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