INVT GD20-0R4G-2-UL, Operation Manual

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Goodrive20-UL Series VFD Fault tracking
-108-
Fault
code
Fault type Possible cause Solutions
UV
[10] Bus
undervoltage

The voltage of the
power supply is too
low.

The overvoltage stall
protection is not open.

Check the input power
of the supply line.

Check the setting of
relative function
codes.
OL1 [11] Motor overload

The voltage of the
power supply is too
low.

The motor setting
rated current is
incorrect.

The motor stall or load
transients is too
strong.

Check the power of
the supply line

Reset the rated
current of the motor

Check the load and
adjust the torque lift
OL2 [12] VFD overload

The acceleration is
too fast.

Reset the rotating
motor.

The voltage of the
power supply is too
low.

The load is too heavy.

Close loop vector
control, reverse
direction of the code
panel and long
low-speed operation.

Increase the ACC
time

Avoid the restarting
after stopping.

Check the power of
the supply line

Select a VFD with
bigger power.

Select a proper motor.
SPI
[13] Phase loss on
input side

Phase loss or
fluctuation of input
R,S,T

Check input power

Check installation
distribution.
SPO
[14] Phase loss on
output side

U,V,W phase loss
input (or serious
asymmetrical three
phase of the load)

Check the output
distribution.

Check the motor and
cable.