-12-
INSTRUCTION MANUAL
AIRFREE SERIES
Code
Desc.
Reason
Solution
E．iLF
Input missing
phase
Loosening of main circuit
terminal of controller
Tighten the screw and restart
Excessive input voltage
fluctuations
Improve the power supply to meet the rated voltage of the
controller if the main circuit power supply is no problem,
check the main circuit side of the electromagnetic contactor
whether there is a problem
Three-phase voltage
imbalance
Confirm if there is a problem with the input voltage and
improve the power imbalance
Code
Desc.
Reason
Solution
E. oLFxx
Output Missing
Phase
Controller output side
U/V/W/ phase break
Check that the motor U/V/W/ phase connection is normal
check that the controller output terminal screw is loose
Motor damage
Measure the resistance between the motor wires, and replace
the motor immediately if it is connected
Low motor power
Reset controller or motor power
Code
Desc.
Reason
Solution
E. oH2
IGBT module
overheating
Excessive ambient
temperature
Reduce the ambient temperature of the controller
Overload
Reduce load
Decreased F01.40[ Carrier Set]
Fan fault
Make sure that the fan is running normally. When the fan is
abnormal, replace the fan and start up again
Code
Desc.
Reason
Solution
E. TExx
Self-learning
failures
The output current of the
controller exceeds the
upper and lower limits
Check if the motor connection is correct, re-learn after reset,
still report failure to seek factory support
Notice: where "xx" is self-learning fault sub code.
Code
Desc.
Reason
Solution
E. SPD
Rapid failure
控制器应用故障Controller
application
Seek technical support from manufacturers
Improper setting of
relevant parameters for
rapid detection
Rapid Detection Threshold and F10.45[ Rapid Detection Time]
Notice: the percentage of output motor speed relative to F01.10 [maximum frequency] is greater than F10.44 [ rapid detection
threshold], and the fault is reported after continuous F10.45[ of rapid detection time. By F10.43 [the rapid protection action], the
fault detection and the motor operation mode can be set when the fault is detected.
