Goodrive18 series two-in-one VFD Troubleshooting
-106-
Fault code
Fault type
Possible cause
Solutions
OL2
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;
The motor power is too
large, and the power of the
VFD is too small.
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
Input phase loss
Phase loss or fluctuation of
input R, S, T
Check input power;
Check installation
distribution.
SPO
Output phase loss
U, V, W phase loss input
(or serious asymmetrical
three phase of the load)
Check the output
distribution;
Check the motor and cable.
OH2
Inverter module
overheat
Air duct jam or fan damage;
Ambient temperature is too
high;
The time of overload
running is too long.
Dredge the vent duct or
replace the fan;
Lower the ambient
temperature.
EF
External fault
SI external fault input
terminals action
Check the external device
input
CE
RS485
communication
error
The baud rate setting is
incorrect;
Fault occurs to the
communication wiring;
The communication
address is wrong;
There is strong interference
to the communication.
Set proper baud rate;
Check the communication
connection distribution;
Set proper communication
address;
Chang or replace the
connection distribution or
improve the
anti-interference capability.
ItE
Current detection
fault
The control board
connector is in poor
contact;
An exception occurs on the
magnifying circuit.
Check the connector and
re-plug
Change the main control
board
Summary of Contents for GD18-004-4-2
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