5 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:
: Do not attempt to repair the Plugreen Solar micro-inverter; it contains no user-
serviceable parts. If it fails, please contact Plugreen customer service to obtain an RMA number
and start the replacement process.
WARNING
Solar micro-inverter Error Reporting
Please connect the Communication Gateway Unit to the same utility phase on which the solar
micro-inverters are connected
Check the status of each solar micro-inverter.
: Please refer the Communication Gateway unit user manual.
Ground Fault:
Please check the Grid Earth and Neutral voltage; it should be as per the standard.
Other Faults:
Please refer the Communication Gateway unit Operations manual.
Note
WARNING
WARNING
WARNING
WARNING
: Be aware that only qualified personnel should troubleshoot the PV array or the
Plugreen Solar micro-inverter.
: Never disconnect the PV wire connectors under load. Please cover the PV module
using an opaque covering sheet prior to disconnecting the module.
: Always disconnect AC power before disconnecting the PV module wires from the
Plugreen Solar micro-inverter. The AC connector of the first solar micro-inverter in a branch circuit
is suitable as a disconnecting means once the AC branch circuit breaker in the load centre has
been opened.
:
The Plugreen Solar micro-inverters are powered by DC power from the PV modules.
Troubleshooting an Inoperable Solar micro-inverter
To troubleshoot an Inoperable Solar micro-inverter, follow the steps in the order shown:
Check the connection to the utility grid. Verify that the utility voltage and frequency are within
allowable ranges shown in the Technical Data section on page 10 of this manual. Verify utility
power is present at the inverter in question by removing AC, then DC power. Never disconnect
the DC wires while the solar micro-inverter is producing power.
Check the AC branch circuit interconnection harness between all the solar micro-inverters.
Verify each inverter is energized by the utility grid as described in the previous step.
STEP 1
STEP 2
8
Copyright Plugreen Corporation. 2011 1-00001 REV 1
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