Front Panel Display Screens and What They Mean
975-0131-01-01 5–7
Fault Mode causes These message screens only appear when there is a fault, and then flash alternately with the Inverter Offline default screen (Table 5-5) until the fault is corrected.Table 5-8Fault Message Screens
Display Description
When the actual DC voltage is over or under the allowable
range, 165 to 600Vdc. Self-clearing, no action required.
The PV array should be configured such that DC voltage
does not fall below 195Vdc or rise above 600 Vdc.*
* It is normal to receive this fault during low light conditions at dawn or dusk. At
such times, the array do es not have suff ici ent energ y to pow er the in vert er, so
the PV voltage drops below 165 volts occasionally.
When the actual AC voltage is over or under the allowable
range, as specified in “Output” on pag e A–2.
This is a utility fault; it will clear its elf when the AC voltage
comes within the specified range.†
†Grid fault. Whe n this fault is cle ared the protectio n timer will begin i ts
countdown and you will see the “Rec onnecting in sss seconds” and “Inverter
Offline” special screens (see Table5-10) flashing alternately until the
countdown is complete.
When the actual Frequency is over or under the allowable
range, as specified in “Output” on page A–2. This is a utility
fault; it will clear its elf when the frequency comes within the
specified range.
When the unit’s intern al tem perature is greater th a n 8 0 °C
(176°F), the unit will shut down automatically and only
restart when the temperature has dropped to less than 70°C
(158°F).
When a grounding fault is detected. The ground fault fuse
will be blown. The system must be shut down completely,
the fault corrected, the fuse replaced (see “Replacing the
Ground Fault Protection Fuse” on page6–4) and then the
system restarted. Troubleshooting a grounding fault should
be performed by qualified personnel.
Applicable only in German installations.
Appears if the GT Inverter unit has bee n s hut down via a
computer connected to the RS-232 port.
The protection processor is not responding.