Specifications

V97-600002 Page 21 of 31
The above example shows a Power Low fault. After the fault occurrence, the inverter
had a DC Voltage High fault. In this case, the display added the fault codes 0200
0000 plus 1000 0040 to become 1200 0040.
If the faults have the same first digit – such as 1000 XXXX – the 1 remains the same
and only the second block of four numbers will add to the original fault code.
4.2.2 Fault Code List
Fault Code VFD Text Fault Description
8000 0000 Power Module
Generated by the power electronics module to
protect the module.
4000 0000 Power Module
Generated by the power electronics module to
protect the module.
1000 0800 PLL Fault
The inverter was unable to match the grid
frequency. This is usually caused by an unstable
power grid.
1000 0400 AC Voltage High The grid voltage exceeded the limits in table 2.2.
1000 0200 AC Voltage Low
The grid voltage dipped below the AC limits in
table 2.2.
Fault Code VFD Text Fault Description
1000 0100 AC Freq Low
The grid frequency went below the limits in table
2.2.
1000 0080 AC Freq High
The grid frequency went above the limits in table
2.2.
1000 0020 DC Voltage Low
The DC voltage is below the startup voltage. This
fault is only seen in conjunction with another fault
(ex. 1000 0220 is an AC low and a DC low). DC
could be low because of low light conditions or the
DC disconnect is turned off.
1000 0010 DC Voltage High
DC Voltage is above 500V. Turn the DC disconnect
off immediately. The inverter will restart when the
voltage is back within safe operating conditions.
1000 0002 Power Supply +15
Housekeeping DC power supply 15VDC is out of
tolerance.
1000 0001 Power Supply +5
Housekeeping DC power supply 5VDC is out of
tolerance.
0400 0000 Ground Fault
The inverter detected that the GFI fuse is blown.
Check section 4.2 to troubleshoot. This fault
requires an AC power cycle to reset.
0200 0000 Power Low
The inverter shut down because it was producing
less than 60W for 5 minutes. It will try to restart
in 10 minutes.
Fault 1200 0040
Power Low