60
Fault
code
Fault type
Possible fault cause
Solutions
Er.oH1
Inverter module
heatsink
over-temperature
The ambient temperature is too high.
Lower the ambient temperature
The duct is blocked.
Clean the duct
The fan is damaged.
Replace the fan
The inverter module is abnormal.
Seek for service support
Er.oH2
Rectifier heatsink
over-temperature
The ambient temperature is too high.
Lower the ambient temperature
The duct is blocked.
Clean the duct
The fan is damaged.
Replace the fan
Er.oL1 Drive
overload
The motor parameters are incorrect.
Perform the parameter auto-tuning of the motor
The load is too large.
Adopt the drive with higher power
The DC braking amount is too large.
Reduce the DC braking current and lengthen the
braking time
When instantaneous stop happens,
restart the rotating motor
Set the start mode P08.00 as the speed tracking
restart function
The acceleration time is too short.
Lengthen the acceleration time
The grid voltage is too low.
Check the grid voltage
V/F curve is improper.
Adjust V/F curve and torque increase
Er.oL2 Motor
overload
The motor overload protection factor
setting is incorrect.
Set the overload protection factor of motor correctly.
The motor is blocked or the sudden
change of load is too large.
Check the load
The universal motor runs at low speed
for a long time, with heavy load.
If long-term low-speed running is required, special
motor should be used.
The grid voltage is too low.
Check the grid voltage
V/F curve is improper.
Set V/F curve and torque increase correctly
Er.EFT
Emergency stop
or external
device fault
Stop suddenly by pressing the STOP
key
See the function definition of the STOP key in
P00.04
External fault emergency-stop terminal
is enabled.
After the external fault is revoked, release the
external fault terminal
Er.EEP
EEPROM
read/write
fault
The read/write error of the control
parameters occurs.
Reset by pressing the STOP/RESET key, seek for
service support
