![background image](http://html1.mh-extra.com/html/gardner-denver/governor-ten014980/governor-ten014980_user-manual_563861138.webp)
13-17-621 Page 138
FV1.9
Fault
VFD Cooling
Under Voltage
Fault
Low VFD input voltage
resulting in Low DC Bus
voltage. Below the fault
level.
Verify package supply voltage within tolerance.
Check input wiring connections to VFD. Confirm
DC bus voltage within tolerance when idle and
running.
FV1.10
Fault
VFD Cooling
Input Phase
Fault
Input phase imbalance or
phase loss in VFD
supply
Check L-L voltage between all three phases
supplying VFD input. Investigate configuration of
3 phase system supplying compressor package,
protection may need to be disabled. Contact
Gardner Denver service.
FV1.11
Fault
VFD Cooling
Output Phase
Fault
VFD has detected output
phase loss to motor
Check wiring between motor and VFD for
damaged or loose connections. Measure output
current on the leads to the fan motor with a clamp
on amp meter. Test motor insulation resistance.
FV1.13
Warning
VFD Cooling
Drive Under
Temp Warning
Ambient temperature is
below the warning limit
for the VFD
Raise ambient temperature near the VFD and
compressor package.
FV1.13
Fault
VFD Cooling
Drive Under
Temp Fault
Ambient temperature is
below the fault limit for
the VFD
Raise ambient temperature near the VFD and
compressor package.
FV1.14
Warning
VFD Cooling
Drive Over
Temp Warning
VFD is measuring
internal temperatures
above the warning limit.
Confirm ambient temperature near the VFD is
below 50C. Check ventilation filters and fans
mounted in the control panel for debris. Check the
VFD heat sink cooling fans for correct operation.
Clean cooling fans and heat sink fins with
compressed air.
FV1.14
Fault
VFD Cooling
Drive Over
Temp Fault
VFD is measuring
internal temperatures
above the fault limit.
Confirm ambient temperature near the VFD is
below 50C. Check ventilation filters and fans
mounted in the control panel for debris. Check the
VFD heat sink cooling fans for correct operation.
Clean cooling fans and heat sink fins with
compressed air.
FV1.15
Fault
VFD Cooling
Motor Stall Fault
Motor has stalled during
start or run
Check wiring between fan motor and VFD for
incorrect or loose connections. Verify supply
voltage within tolerance. Check fan wheel for
proper alignment and balance. If possible,
manually spin fan wheel and observe rotation.
Test fan motor insulation resistance.
FV1.15
Warning
VFD Cooling
Motor Stall
Warning
Motor has stalled during
start or run
Check wiring between fan motor and VFD for
incorrect or loose connections. Verify supply
voltage within tolerance. Check fan wheel for
proper alignment and balance. If possible,
manually spin fan wheel and observe rotation.
Test fan motor insulation resistance.
FV1.16
Warning
VFD Cooling
Motor Over
Temp Warning
VFD has calculated that
the motor has been run
in an overloaded
condition for an extended
time and is too
Check wiring between motor and VFD for
incorrect or loose connections. Check drive
system for proper alignment and wear. Verify
supply voltage within tolerance. Decouple
compressor from drive motor and check for
proper manual rotation. Test motor insulation
resistance.
FV1.16
Fault
VFD Cooling
Motor Over
Temp Fault
VFD has calculated that
the motor has been run
in an overloaded
condition for an extended
time and is too
Check wiring between motor and VFD for
incorrect or loose connections. Check drive
system for proper alignment and wear. Verify
supply voltage within tolerance. Decouple
compressor from drive motor and check for
proper manual rotation. Test motor insulation
resistance.