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Failure
Failure
No.
code
description
Auto−tuning
9
E.AUt
10
E.FAL
Module protection
Heatsink 1 over
11
E.oH1
temperature
protection
Heatsink 2 over
12
E.oH2
temperature
protection
Inverter overload
13
E.oL1
protection
108
E5−H High Performance Universal Inverter
Failure
Enable auto−tuning function during motor
spining
Auto−tuning overtime
failure
Incorrect setting of motor parameters in group
P9
Output over current
DC terminal overvoltage
Loose connection of connectors inside the
inverter
Ambient over−temperature
Blockage of air duct
Fan failure
Inverter module failure
Temperature detection circuit failure
Ambient over−temperature
Blockage of air duct
Fan failure
Rectifier module failure
Temperature detection circuit failure
Input power under voltage
Fast start−up when motor operates with high
speed
Keep overloading for a long period of time
Too short acceleration and deceleration time
Too big V/F curve ratio
Power level of inverter is small
Potential causes
Chapter 7 Fault Diagnosis
User Manual
Solutions
Perform auto−tuning after the
motor stops to rotate
Check whether motor wirings are
well connected
Length of motor wiring within
100m
Please reset the parameters
according to the nameplate
parameters on the motor.
Check whether the motor the
output connection is short
circuited, whether the ground is
short circuited and whether the
load is too heavy.
Check the mains power supply
and whether the large inertia
load has no function of quick
stop at energy consumption
brake.
Ask professional technicians to
maintain
Lower the ambient temperature
and strengthen ventilation and
heat dissipation.
Clean the dusts, wools and other
foreign objects in the air duct.
Check whether fan wirings are
well connected.
Replace a new fan of the same
model.
Seek for technical support
Seek for technical support
Lower the ambient temperature
and strengthen ventilation and
heat dissipation
Clean the dusts, wools and other
foreign objects in the air duct
Check whether fan wirings are
well connected.
Replace a new fan of the same
model
Seek for technical support
Seek for technical support
Check input power supply
Start again after the motor stops
rotating
Shorten the overloading time and
reduce load
Prolong the
acceleration/deceleration time
Adjust V/F curve setting and
torque boost
Replace to inverter with proper
model
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