User Manual of TI10 Series Variable Frequency Drive
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Fault
code
Failure
Display
Fault name
Cause
Countermeasure
6
Er.ou3
Over-voltage in
constant speed
Abnormal input voltage
Check grid voltage
Large load fluctuation
Check load
7
Er.Lu1
Variable
Frequency
Drive
under-voltage
The input terminal voltage of
the Variable Frequency
Drive is not within the range
required by the
specification.
Adjust voltage to normal
range
Momentary interruption
Reset fault
Abnormal bus voltage
Seek technical support
Abnormal rectifier bridge
and buffer resistance
Seek technical support
Abnormal driving plate
Seek technical support
Abnormal control plate
Seek technical support
8
Er.Cur
Current
detection fault
Abnormal connection
between control plate and
driving plate
Check the cable and reset
it
Abnormal control plate
current detection circuit
Seek technical support
Abnormal driving plate
current detection circuit
Seek technical support
Damaged current sensor
Seek technical support
Damaged switch power
supply
Seek technical support
9
Er.CPU
System
interferenc
fault
Serious external
interference signal
Seek technical support
10
Er.FAL
Module
protection fault
Output interphase short
circuit or short circuit to
ground
Check motor wiring and
output impedance to
ground
Over-voltage or over-current
Process according to the
over-voltage and
over-current method
Loose connection of control
plate
Reset the control plate
connector
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