Chapter 6 Troubleshooting 85
EV2000 Series Universal Variable Speed Drive User Manual
Fault
code
Fault categories Possible reasons of fault Actions
E017
RS232/RS485
communication
failure
Wrong baud rate setting
Set the baud rate correctly
Serial port communication error
Press STOP/RESET to reset, seek
service
Improper settings of alarm parameters
Modify FF.02, FF.03 and FL.12
Host PC does not work Check the host PC; Check the wiring
E018
Contactor not
closed
Low AC supply voltage Check the AC supply voltage
Contactor damaged
Replace the contactor in main circuit and
seek service
Soft start resistor is damaged
Replace the soft start resistor and seek
service
Control circuit is damaged
Seek service
Input phase loss
Check the wiring of R, S, T.
E019
Current
detection circuit
has fault
Wires or connectors of control board are loose Check and re-wire
Auxiliary power supply is damaged Seek service
Hall sensor is damaged Seek service
Amplifying circuit is abnormal Seek service
E020
System
disturbance
Severe disturbance
Press STOP/RESET to reset or install
power filter at the input side of the drive.
R/W fault of DSP in main control board
Press STOP/RESET to reset
Seek service
E021 Reserved Reserved Reserved
E022 Reserved Reserved Reserved
E023
Parameter copy
error
Panel’s parameters are not complete or the
version of the parameters are not the same
with that of main control board
Update the panel’s parameters and
version again. First set FP.03 to 1 to
upload the parameters and then set
FP.03 to 2 or 3 to download the
parameters.
Panel’s EEPROM is damaged Seek service
E024 Auto-tuning fails
Improper settings of parameters on the
nameplate
Set the parameters correctly according to
the nameplate
Overtime of auto-tuning Check the motor’s wiring
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