Goodrive270 series VFD for fan and pump Troubleshooting
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[2] Inverter unit
V-phase protection
Misoperation caused by
interference.
Drive wires connected
poorly.
To-ground short circuit
occurred.
Check drive wires.
Check whether there is strong
interference surrounding the
peripheral device.
[3] Inverter unit
W-phase protection
[7] Overvoltage
during ACC
DEC time too short.
Input voltage exception.
Large energy feedback.
No braking components.
Energy-consumption
braking is not enabled.
Check the input power.
Check whether load DEC time is
too short or the motor starts
during rotating.
Install dynamic braking
components.
Check the settings of related
function codes.
[8] Overvoltage
during DEC
[9] Overvoltage
during constant
speed running
[4] Overcurrent
during ACC
ACC/DEC too fast.
Grid voltage too low.
VFD power too small.
Load transient or
exception occurred.
To-ground short circuit or
output phase loss
occurred.
Strong external
interference sources.
The overcurrent stall
protection is not enabled.
Increase ACC/DEC time.
Check the input power.
Select a VFD with larger power.
Check whether the load is short
circuited (to-ground short circuit
or line-to-line short circuit) or the
rotation is not smooth.
Check the output wiring.
Check whether there is strong
interference.
Check the settings of related
function codes.
[5] Overcurrent
during DEC
[6] Overcurrent
during constant
speed running
Grid voltage too low.
The overvoltage stall
protection is not enabled.
Check the grid input power.
Check the settings of related
function codes.
Grid voltage too low.
Motor rated current set
incorrectly.
The motor stall occurs or
the load transient is too
large.
Check the grid voltage.
Reset the rated current of the
motor.
Check the load and adjust the
torque boost quantity.
ACC too fast.
The motor in rotating is
restarted.
Increase ACC time.
Avoid restart after stop.
Check the grid voltage.
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