INVT GD100-1R5G-4-PV - Page 62

Goodrive100-PV Series Solar Pumping VFD Fault diagnosis and solution
60
Fault
code
Fault type
Possible cause
Solutions
OC2
DEC overcurrent
2. The voltage of the grid is
too low.
3. The power of the VFD is
too low.
4. The load transients or is
abnormal.
5. The grounding is short
circuited or the output is
phase loss.
6. There is strong external
interference.
7. The overvoltage stall
protection is not open.
3. Select the VFD with a larger
power.
4. Check if the load is short
circuited (the grounding short
circuited or the wire short
circuited) or the rotation is not
smooth.
5. Check the output
configuration.
6. Check if there is strong
interference.
7. Check the setting of relative
function codes.
OC3
Constant-speed
overcurrent
UV
Bus undervoltage
1. The voltage of the power
supply is too low.
2. The overvoltage stall
protection is not open.
1. Check the input power of the
supply line.
2. Check the setting of relative
function codes.
OL1
Motor overload
1. The voltage of the power
supply is too low.
2. The motor setting rated
current is incorrect.
3. The motor stall or load
transients is too strong.
1. Check the power of the supply
line.
2. Reset the rated current of the
motor.
3. Check the load and adjust the
torque lift.
OL2
VFD overload
1. The acceleration is too fast.
2. The rotating motor is reset.
3. The voltage of the power
supply is too low.
4. The load is too heavy.
5. The motor power is too
small.
1. Increase the ACC time.
2. Avoid the restarting after
stopping.
3. Check the power of the supply
line.
4. Select a VFD with bigger
power.
5. Select a proper motor.
SPI
Input phase loss
Phase loss or fluctuation of
input R,S,T
1. Check input power.
2. Check installation distribution.
SPO
Output phase loss
U,V,W phase loss output (or
serious asymmetrical three
1. Check the output distribution.
2. Check the motor and cable.