Goodrive350A series high-performance multifunction VFD
Troubleshooting
-290-
Fault code
Fault type
Possible cause
Corrective measures
Grid voltage is too low;
Load is too large;
Power is too small;
Select the VFD with larger
power;
Select proper motor
SPI
[13] Phase loss on
input side
Phase loss or violent
fluctuation occurred to R, S
and T input
Check the input power;
Check installation wiring
SPO
[14] Phase loss on
output side
Phase loss occurred to U,
V, W output (or the three
phases of motor is
asymmetrical)
Check the output wiring;
Check the motor and cable
OH1
[15] Overheat of
rectifier module
Air duct is blocked or fan is
damaged;
Ambient temperature is too
high;
Long-time overload running
Ventilate the air duct or
replace the fan;
Lower the ambient
temperature
OH2
[16] Overheat of
inverter module
EF
[17] External fault
SI external fault input
terminal acts
Check external device input
CE
[18]
Modbus/Modbus
TCP communication
fault
Baud rate is set improperly;
Communication line fault;
Communication address
error;
Communication suffers
from strong interference
Set proper baud rate;
Check the wiring of
communication interfaces;
Set proper communication
address;
Replace or change the wiring
to enhance anti-interference
capacity
ItE
[19] Current
detection fault
Poor contact of the
connector of control board;
Hall component is
damaged;
Exception occurred to
amplification circuit
Check the connector and
re-plug;
Replace the hall component;
Replace the main control
board
tE
[20] Motor
autotuning fault
Motor capacity does not
match with the VFD
capacity, this fault may
occur easily if the difference
between them is exceeds
five power classes;
Motor parameter is set
Change the VFD model, or
adopt V/F mode for control;
Set proper motor type and
nameplate parameters;
Empty the motor load and
carry out autotuning again;
Check motor wiring and
