76 Fault Diagnosis And Countermeasures
Fault Code Fault Description
Possible Reasons
Fu.13
Motor overload
1. The load is too large.
2. The acceleration time is
too short.
3. The protection factor
Setting is too small.
4. The torque boost is too
high.
Fu.14
1. Air duct obstruction
Inverter overheat
2. The environment
temperature is too high.
3. The fan is damaged.
Fu.15
Reserve
Fu.16
External
The exterior fault input
equipment fault terminal is ineffective.
Fu.17
~Fu.19
Fu.20
Fu.21
Fu.22
Fu.23
Reserve
Current
detection error
The current detection
devices or circuit is
damaged.
Temperature The temperature sensor is
sensor fault off-line.
Reserve
PID feedback
off-line
1 The feedback signal is
lost.
2. The setting of off-line
detection threshold value
is not appropriate.
Solutions
1. Reduce load.
2. Extend the acceleration
time.
3. Increase the overload
protection factor of motor.
4. Reduce torque boost.
1. Clean air duct or improve
ventilation condition.
2. Improve the ventilation
condition and reduce the
carrier frequency.
3. Change fan.
1. Check the exterior
equipment.
2. Disconnect the external
fault input terminal.
1. Check socket line.
2. Ask for manufacturers’
assistance.
1. Check socket line.
2. Ask for manufacturers’
assistance.
1. Check line.
2. Reduce threshold value of
off-line detection.
Fu.24
~Fu.39
Reserve
Fu.40
Internal data The read-write errors of
EEPROM error control parameters
Ask for manufacturers’
assistance.
7.2 Fault record query
The series of inverters recorded the recent fault code occurred in the last four
times and the inverter output parameters of the last fault; query of these
information will contribute to find fault causes.
E500 Series Universal Low-Power Inverter
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