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6. Troubleshooting
The inverter provides two indicator lights in the form of Light Emitting
Diodes, or LEDs. The LEDs are the primary indicators of the system
status: O.K., Sleep or Faulted. The LEDs are located above the inverter
display in the upper left hand corner on the front lid.
6.1 LED Status
Red LED
• The light on the left is a red LED and is the primary indicator of sys-
tem stand-by or fault condition.
• A solid red LED and a blank screen indicates the system is in normal
sleep or stand-by mode. This mode occurs if there is not enough sun-
light present to generate DC voltage at night and the AC properties are
within the provided specifications. This may also occur when the DC
conductors are connected with reversed polarity.
• The red LED blinks if the inverter has had a fault condition, and the
vacuum fluorescent display (VFD) displays a fault code. If the red
LED is blinking, carefully record the numerical error code and text
describing the error. Possible faults are listed in Table 6-1 on page 37.
Green LED
• The light on the right is a green LED and is the primary indicator the
system is generating power.
• The green LED illuminates any time the DC voltage is above the in-
verter’s DC start voltage and all operational parameters are met. When
the green light illuminates, the inverter tries to convert power from the
PV array.
Red and Green LED Lights On
If both LED lights are solid at the same time, contact PV Powered
Technical Support for assistance.
Ground Fault Error
1. The inverter’s GFDI circuit reports a ground fault error if the 1-amp
fuse is open and the voltage potential between ground and the
grounded terminal of the PV array is greater than +25 VDC, or less
than -25 VDC. This voltage potential can only occur if the ground fault
fuse in the inverter has opened.
2. A ground fault occurs when unintended current has a path to ground.
The most common source of a PV system ground faults are crossed
wires, a nicked PV module conductor touching a grounded surface, or
cables inside a conduit have metal exposed through the insulation.
TROUBLESHOOTING
