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13-17-621 Page 160
V1.63
Fault
VFD1 Current
Imbalance fault
The VFD has detected
an output phase
imbalance of more than
20%
Check VFD output terminal connections to the
motor. Check the condition of the motor leads,
and the connections in the motor junction box.
Measure current with a clamp on amp meter in
each lead between the VFD & motor. Test fan
motor insulation resistance.
V1.64
Warning
VFD1 Replace
Battery warning
The VFD's real time
clock battery is near
depletion
Replace the RTC battery
V1.64
Fault
VFD1 Replace
Battery fault
The VFD's real time
clock battery is depleted
Replace the RTC battery
V1.65
Warning
VFD1 Replace
Fan warning
VFD has calculated that
its cooling fan life is less
than 2 months.
Inspect condition and operation of heat sink
cooling fans. Replace as needed.
V1.65
Fault
VFD1 Replace
Fan fault
VFD has calculated that
its cooling fan life is less
than 2 months.
Inspect condition and operation of heat sink
cooling fans. Replace as needed.
V1.66
Warning
VFD1 Safe
Torque Off
warning
Emergency Stop
Pressed. E-Stop digital
input signal received.
Reset the E-Stop switch. Refer to machine
schematic and check wiring between E-Stop
contact and cooling VFD input.
V1.66
Fault
VFD1 Safe
Torque Off fault
Emergency Stop
Pressed. E-Stop digital
input signal received.
Reset the E-Stop switch. Refer to machine
schematic and check wiring between E-Stop
contact and cooling VFD input.
V1.67
Warning
VFD1 Current
Limit control
warning
VFD is actively limiting
output current to the
compressor motor, motor
is overloaded
Check wiring between motor and VFD for
incorrect or loose connections. Verify supply
voltage within tolerance. Check drive system for
proper alignment and wear. Decouple
compressor from drive motor and check for
proper manual rotation. Test motor insulation
resistance.
V1.68
Warning
VFD1 over
Voltage limit
warning
VFD has detected that
the DC bus voltage has
risen above the warning
limit, due to motor regen
or high input voltage
Verify supply voltage within tolerance. Motor
deceleration may be too fast and require
parameter adjustment, contact Gardner Denver
service.
V1.69
Fault
VFD1 System
fault
Internal communication
error within the VFD
Try performing a power cycle to see if fault clears.
Contact Gardner Denver service
V1.83
Fault
VFD1
Communications
fault
VFD has detected an
error in the Modbus RTU
communication between
it and the compressor
controller
Check the communication cabling between the
controller and the VFD. Confirm proper cable
routing (avoiding parallel runs with AC power
lines), and confirm cable shielding drains are
terminated to ground terminals.
V1.96
Warning
VFD1
Parameter error
Warning
Internal parameter error
within the VFD
Try performing a power cycle to see if fault clears.
Contact Gardner Denver service.
V1.96
Fault
VFD1
Parameter fault
Internal parameter error
within the VFD
Try performing a power cycle to see if fault clears.
Contact Gardner Denver service.
V1.104
Warning
VFD1 Firmware
compatibility
warning
Internal firmware
compatibility error within
the VFD
Try performing a power cycle to see if fault clears.
Contact Gardner Denver service.
V1.104
Fault
VFD1 Firmware
comp ability fault
Internal firmware
compatibility error within
the VFD
Try performing a power cycle to see if fault clears.
Contact Gardner Denver service.
V1.105
Warning
VFD1 warning
Controller has detected
an unknown warning
code in the VFD
Check the VFD's keypad for specific warning
code and reference the VFD user manual for
appropriate action. Contact Gardner Denver
service