Trouble Shooting
83
OH1 Rectify overheat
OH2 IGBT overheat
1.Ambient temperature is too
high.
2. Near heat source.
3. Cooling fans of inverter
stop or damaged.
4. Obstruction of ventilation
channel
5. Carrier frequency is too
high.
1. Install cooling unit.
2. Remove heat source.
3. Replace cooling fan
4. Clear the ventilation
channel.
5. Decrease carrier
frequency.
CE
Communication
fault
1. Improper baud rate
setting.
2. Receive wrong data.
3. Communication is
interrupted for Long time
1. Set proper baud rate.
2. Check communication
devices and signals.
ITE
Current detection
fault
1. Wires or connectors of
control board are loose
2. Hall sensor is damaged.
3. Amplifying circuit is
abnormal.
1. Check the wiring.
2. Ask for support.
TE Autotuning fault
1. Improper setting of motor
rated parameters.
2. Overtime of autotuning.
1. Set rated parameters
according to motor
nameplate.
2. Check motor’s wiring.
EEP EEPROM fault
1. R/W fault of control
parameters
Press STOP/RESET to
reset
Ask for support
PIDE PID feedback fault
1. PID feedback
disconnected.
2. PID feedback source
disappears.
1. Inspect PID feedback
signal wire.
2. Inspect PID feedback
source.
BCE Brake unit fault
1. Braking circuit failure or
brake tube damaged.
2. Too low resistance of
externally connected braking
resistor.
1. Inspect braking unit,
replace braking tube.
2. Increase braking
resistance.
Factory Reserved
7.2 Common Faults and Solutions
Inverter may have following faults or malfunctions during operation, please refer to the
following solutions.
7.2.1 No display after power on:
z Inspect whether the voltage of power supply is the same as the inverter rated
voltage or not with multi-meter. If the power supply has problem, inspect and solve
it.
z Inspect whether the three-phase rectify bridge is in good condition or not. If the
rectification bridge is burst out, ask for support.
z Check the CHARGE light. If the light is off, the fault is mainly in the rectify bridge or
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