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Fault code
Fault type
1. The voltage of the power
DC bus
supply is too low.
UV
Under-voltage
2. The overvoltage stall
protection is not opened.
1. The voltage of the power
supply is too low.
2. The motor setting rated
OL1
Motor overload
current is incorrect.
3. The motor stall or load
transients are too strong.
1. The acceleration is too fast
2. Reset the rotating motor
3. The voltage of the power
supply is too low.
OL2
Inverter overload
4. The load is too heavy.
5. Close loop vector control,
reverse direction of the code
panel and long low-speed
operation
The inverter will report
OL3
Electrical overload
overload pre-alarm according
to the set value.
OH1
Rectifier overheat
1. Air duct jam or fan damage
2. Ambient temperature is too
high.
OH2
IGBT overheat
3. The time of overload
running is too long.
S1~S5 external fault input
EF
External fault
terminals action
1. The baud rate setting is
incorrect.
CE
Communication error
2. Fault occurs to the
communication wiring.
Possible cause
Solutions
1. Check the input power of
the supply line.
2. Check the setting of relative
function codes.
1. Check the power of the
supply line
2. Reset the rated current of
the motor
3. Check the load and adjust
the torque lift
1. Increase the ACC time
2. Avoid the restarting after
stopping.
3. Check the power of the
supply line
4. Select an inverter with
bigger power.
5. Select a proper motor.
Check the load and the
overload pre-alarm point.
1. Refer to the overcurrent
solution
2. Redistribute
dredge the wind channel or
change the fan
3. Low the ambient
temperature
4. Check and reconnect
5. Change the power
6. Change the power unit
7. Change the main control
panel
Check the external device
input
1. Set proper baud rate
2. Check the communication
connection distribution
3. Set proper communication
Quick Start Guide of CV10- ControlVIT Series
Fault code
Fault type
EEP
EEPROM fault
PIDE
PID feedback fault
Time reach of factory
END
setting
Electronic underload
LL
fault
●Other states
Fault code
Fault type
PoFF
System power off
●Fault reset
The inverter can be reset by STOP/RST, digital input, and power switching-off. After the problems
settlement, the motor can be restarted.
Only qualified trained people can settle the fault and please do as the "safety precautions".
5 / 5
Possible cause
Solutions
3. The communication
address.
address is wrong.
4. Change or replace the
4. There is strong interference
connection distribution or
to the communication.
improve the anti-interference
capability.
1. Error of controlling the write
1. Press STOP/RST to reset
and read of the parameters
2. Change the main control
2. Damage to EEPROM
panel
1. Check the PID feedback
1. PID feedback offline
signal
2. PID feedback source
2. Check the PID feedback
disappear
source
The actual running time of the
Ask for the supplier and adjust
inverter is above the internal
the setting running time.
setting running time.
The inverter will report the
Check the load and the
underload pre-alarm
underload pre-alarm point.
according to the set value.
Possible cause
System power off or low DC voltage Check the grid
Solutions
EL086A01
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