Specifications

Advanced Troubleshooting
5–2 975-0581-01-01
This manual is for use by qualified personnel only
Faults and Fault Codes
Fault states are automatic from any state of operation. In the event of a fault
condition, the Xantrex inverter immediately stops processing power and
executes an immediate orderly shutdown, opens both the main AC contactor and
DC disconnect switch, and remains in a faulted state until the fault is remedied
and cleared (manually or automatically).
In the event of an alarm or fault condition, the Xantrex inverter executes an
immediate, orderly shutdown and remains in a faulted state until the alarm or fault
is remedied and cleared (manually or automatically).
• Faults associated with a grid disturbance clear automatically. The Xantrex
inverter automatically re-starts after a 5-minute delay.
• All other faults must be cleared manually.
All fault conditions detected by the Xantrex inverter are reported to the UFCU
(Universal Frontpanel Control Unit). The 4-line display shows a hexadecimal
value (fault code) and a brief text description of the fault.
Most faults are latching and only those faults associated with grid disturbances
are auto-clearing and thus enable the Xantrex inverter to restart after a 5 minute
delay period.
Once the cause of the fault has been identified and corrected, and it is
determined to be safe to proceed, Xantrex inverter faults may be manually
cleared from the UFCU keypad or using the remote monitoring connection. See
“Clearing Faults Manually” on page 5–3 for instructions on this procedure.
WARNING: Multiple sources with risk of electric shock,
explosion, and arc flash
The Xantrex inverter is energized from the PV array, from the AC grid, and from
an auxiliary AC source (backed up with a Xantrex UPS for Xantrex GT500 E &
Xantrex GT630 E units with low-voltage ride-through capability). All 3 sources
(4 including a Xantrex UPS) must be disconnected, locked-out and tagged-out,
and all circuits tested to verify that the inverter is fully de-energized, according to
the procedure on page viii, before servicing or maintenance. Opening the AC
and DC disconnect switches on the inverter does not remove all power from the
inverter. Wait 20 minutes for the DC bus capacitors, located within the cabinet, to
discharge after removing power.