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Trouble shooting and Solutions
Display
Fault Name
Possible Causes
Solutions
Err14 IGBT overheat
1. The ambient temperature is too
high.
2. The air filter is blocked.
3. The cooling fan is damaged.
4. The thermal sensor of IGBT is
damaged.
5. The IGBT is damaged.
1. Reduce the ambient
temperature.
2. Clean the air filter.
3 to 5. Seek for maintenance.
Err15 External
equipment fault
1. External fault signal is input via DI.
2. External fault signal is input via VDI.
Reset the fault.
Err16 Communication
fault
1. The host computer is abnormal.
2. The communication cable is faulty.
3. The extension card type set in F0-28
is incorrect.
4. The communication parameters in
group FD are set improperly.
1. Check cabling of the host
computer.
2. Check the communication
cabling.
3. Set F0-28 correctly.
4. Set the communication
parameters properly.
Err18
Current
detection fault The drive board is faulty.
Replace the drive board.
Err19
Motor tuning
fault
1. Motor parameters are wrong.
2. Motor tuning overtime.
1. Check motor parameters F1-00
to F1-05.
2. Check the wiring between drive
and motor.
Err21 EEPROM read-
write fault
The EEPROM chip is damaged.
Replace the main control board.
Err23
Short circuit to
ground
The motor is short-circuited to
ground.
Replace the cables or motor.
Err26
Accumulative
running time
reached
The accumulative running time
reaches the setting of F8-17.
Clear the record by performing
parameter initialization (set FP-
01 to 2).
Err27 User-defined
fault 1
1. The user-defined fault 1 signal is
input via DI.
2. User-defined fault 1 signal is input
via VDI.
Reset the fault.
Err28 User-defined
fault 2
1. The user-defined fault 2 signal is
input via DI
2. The user-defined fault 2 signal is
input via VDI.
Reset the fault.
Err29
Accumulative
power-on time
reached
The accumulative power-on time
reaches the setting of F8-16.
Clear the record by performing
parameter initialization (set FP-
01 to 2).
Err30 Off load fault
Offload when it's running.
Check the connection between
motor and load.
