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VFD Faults
The VFD has a number of different fault codes that will make it inoperable until the fault
is cleared. Some faults, the VFD will clear by itself some require the operator to clear
manually. If you need to clear a fault manually, first take note of which number the fault
code is and then press the red stop button. If the fault no longer exists, the fault will clear
and the VFD will turn the pump back on. If the fault is still present pressing the red stop
button will not change anything.
These are the faults that are the most likely to be seen on the VFD for a PurWater reclaim
system. If you see any other fault code be sure to note the number before resetting. If
you are having repeated faults or can not clear one of the faults listed contact PurWater for
assistance.
F003
Description:
Excessive DC bus voltage ripple.
Translation:
Most likely a problem with the incoming power.
Solution:
Check incoming power at the bottom of the three
phase breaker both to each other and each leg to ground for
an inconsistent reading between power legs, a low voltage
reading or a reading that jumps around erratically. Contact
an electrician if needed.
This fault will not automatically reset.
F004
Description:
Undervoltage fault.
Translation:
The line power is less than the required power
to run the VFD. Note: This fault will appear briefly after the
power has been removed from the VFD while the capacitors
discharge.
Solution:
Check incoming power at the bottom of the three
phase breaker both to each other and each leg to ground.
Contact an electrician if needed.
This fault will automatically reset.
F005
Description:
Overvoltage fault.
Translation:
The line power is more than the allowed power
to run the VFD or the motor is decelerating too fast causing
motor regeneration.
Solution:
Check incoming power at the bottom of the three
phase breaker both to each other and each leg to ground.
Contact an electrician if needed. If power seems ok, verify
that parameter P040 (decel speed 1) is not set below 2.0.
This fault will automatically reset.
VFD Fault Information
Summary of Contents for PURWATER RECLAIM 3.0
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