E5
−
H High Performance Universal Inverter User Manual
110 Chapter
7
Fault
Diagnosis
Failure
No.
Failure
code
Failure
description
Potential causes
Solutions
24
E.EEP
EEPROM failure
EEPROM reading and writing failure
Seek for technical support
Loose connection of connectors inside the
inverter
Ask professional technicians to
maintain
25 E.dL3
Relay contact
failure
The soft-start circuit is faulty
Seek for technical support
Ambient under temperature
Check whether the ambient
temperature complies with the
requirements
26 E.dL2
Temperature
sensor taking
sample anomaly
The temperature sampling circuit inside the
inverter is faulty
Seek for technical support
27 E.dL1
Reserved
Reserved
Reserved
+10V power overload
In10V power load
impedance
Utilize externally independent
power supply
+10V power supply and GND is short circuited
Eliminate the short circuit failure
28 E.P10
+10V power
output abnormal
+10V power terminal circuit failure
Seek for technical support
Too high analog input voltage
Check whether the analog input
voltage complies with the
requirements
Analog input circuit failure
Seek for technical support
29 E.AIF
Analog input
abnormal
Analog input circuit signal interfered
Increase the P6.22 and P6.24 AI
filtering time
The motor temperature signal reaches the
alarm setting value
Strengthen ventilation and heat
dissipation
Thermistor resistance failure
Check the thermistor
30 E.Ptc
Motor over
temperature(PTC)
The sensor protection threshold of the motor is
set improperly
Adjust the sensor protection
threshold of the motor
The communication of operation panel RS485
is disconnected
Check the connection of the
equipment communications
Communication failure of operation panel
RS485
Check whether the data
receiving and transmission
complies with the protocol,
whether the check sum is correct
and whether the receiving and
transmission interval complies
with the requirements
31 E.SE1
Communication
abnormal 1
(Operation panel
485)
The inverter is set to master mode
Set the inverter to slave mode
33 E.VEr
Version
compatibility
abnormal
Incompatible software version of the operation
panel
Seek for technical support
The data error occurs when copying the inverter
parameters to the operation panel
Check the connections of the
operation panel
The data error occurs when copying the
parameters from the operation panel to the
inverter
Check the connections of the
operation panel
The parameters are directly downloaded
without undergoing copy and upload
operations.
Perform download before
uploading the parameters
34 E.CPy Copy
failure
Control board software version incompatible
Check if d1.09 is consistent
36 E.dl4
Reserved
Reserved
Reserved
37 E.IoF
Terminal mutual
exclusion check
failed
The functions of X1 to X4, AI1, AI2 terminals are
set in a repeated manner
Modify the settings of X1 to X4,
AI1, AI2 terminals and ensure
the setting functions are not
repeated (excluding null