Chapter 7 Faults and Solutions
139
The internal components of the
inverter are damaged.
2
Power on
display FZKJ
Poor contact between the drive
board and the control board;
The relevant device on the
control board is damaged;
The motor or motor line is
shorted to ground;
Hall failure or grid voltage is too
low
;
Re-insert 8-core and 34-core cable;
Seek factory services;
3
Power on
display
"Err23" alarm
The motor or output line is
shorted to ground;
The inverter is damaged;
Use a shaker to measure the
insulation of the motor and the
output line; seek factory service;
4
The power-
on inverter is
normal, and
it displays
“FZKJ” after
running and
stops
immediately.
The fan is damaged or blocked;
The peripheral control terminal
wiring has a short circuit;
The internal components of the
inverter are damaged.
Replace the fan;
Eliminate external short circuit
faults;
Seek factory services;
5
Frequently
reported
Err14
module
overheat
fault
The carrier frequency setting is
too high.
The fan is damaged or the air
duct is blocked.
Inverter internal device damage
Reduce the carrier frequency (P0-
15).
Replace the fan and clean the air
duct.
Seek factory to replace.
6
The motor
does not
rotate after
the inverter
is running.
Motor and motor line;
Inverter parameter setting error
(motor parameter);
Poor contact between the driver
board and the control board;
Reconfirm the connection between
the inverter and the motor;
Replace the motor or remove
mechanical problems;
Check and reset the motor
parameters;