Ac Under Voltage Fault; Ground Faults; Figure 8-2. Screen Sequence When An Inverter Faults - Advanced Energy AE 600 User Manual

In the following example, a system fault, SYS returned a code, indicating too many
fault restarts occurred. The 0000 indicates no fault occurred in the other fault
groups.
Fault Codes
SYS 0020
VLT 0000
GRD 0000
Screen 1: Fault code(s)
Figure 8‑2. Screen sequence when an inverter faults

AC UNDER VOLTAGE FAULT

To Identify an AC Under Voltage Fault
If the inverter displays an AC Under Voltage fault and all the voltages going
into the inverter are within the tolerances provided in the specifications, continue
with the following troubleshooting tips.
1. Check the main branch circuit breaker.
a. If the breaker is not tripped:
Check the small fuses located on the AC panel. If one or more of these fuses
have opened, replace them with like parts (600 VAC, 7.5 A as required)
2. If any of the fuses are open, visually inspect the wiring. Look for the following:
a. Frayed wires or carbon marks indicating a short
b. Burned traces on the PCBs
If any of these conditions are present, DO NOT START THE INVERTER.
Contact AE Solar Energy Technical Support for replacement parts or service.

GROUND FAULTS

The inverter is equipped with a Ground Fault Detector Interrupter (GFDI). The
purpose of the GFDI is to detect a ground fault (unintended current flow from the
solar panels to earth ground) and in this event, disable the inverter.
WARNING:
For the GFDI circuit to function as designed, the solar array safety ground
must not be connected to the PV array positive or negative leads. Bonding
the safety ground to the grounded leg of the array anywhere but through the
inverter will cause the GFDI circuit to be bypassed. This would defeat the
operation of the GFDI and potentially create an unsafe operating condition.
570-1001791-05A
Fault
DRV 0000 AC FAST UNDERVOLT A
TMP 0000 GFDI FAULT
Screen 2: Fault text
Troubleshooting and Solar Energy Technical Support
Advanced Energy® AE 500 Inverter
Advanced Energy
phone: (877)312-3832
email: invertersupport@
aei.com
Screen 3: Contact information
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