Inverter overheat
E. O H
Whether the air duct is blocked
No
No
No
No
Whether the thermistor of the module
is broken
Whether the inverter module is broken
Replace the
drive board
Replace the
inverter module
Replace the main
control board
Replace the
thermistor
Clean the air duct
Reduce the ambient
temperature
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Ask for technical support
Whether the ambient temperature is too high
Whether the fan is broken
Replace the fan
No
No
External equipment fault
E.EF
it inputs external fault signal
via the multifunctional terminal X
Whether
Check and remove
the external fault
Yes
Communications fault
E.CE
Whether the host computer is working
Yes
Yes
Yes
Yes
Yes
Whether the baud rate is setting correctly
Whether the carrier wave frequency
F2.12 setup is too high
it is satisfy with the control
need when communication parameter
FC.05 isn’t set as 2
Whether
the communication parameter
FC.03 and FC.04 are setting correctly
Whether
Set the baud
rate correctly
Modify the communication
parameter
Reduce the carrier
wave frequency
Modify the communication
parameter
Check the
cable
communication
Check the host computer
cable connection
No
No
No
No
No
No
Yes
Whether the RS485 communication
cable connection is normal
Ask for technical support
85
Check
the drive board is normal
Whether
Check
the main control
board is normal
Whether
Chapter 8 Troubleshooting and Countermeasures
