Troubleshooting Procedures - V&T E5-H Series User Manual

Failure Failure
No. code description
Hardware
38 E.oL3
protection
Power under
63 −LU−

7.2 Troubleshooting Procedures

Serious fault occurs, such as abnormal sound
Identify the fault code per 4.4.4" Common
Characters Displayed by LED" AND whether
countermeasures for the failure as per the
E5−H High Performance Universal Inverter
Failure
Load failure
overload
Input failure
Output failure
The power supply voltage is lower than the
minimum operating voltage of the inverter
voltage
Abnormal internal switching power supply
START
upon power up and no display
NO
the fault code can be Identified
YES
Find out the possible reasons and
above table, and whether this failure is
removed
YES
Fault reset
END
Chapter 7 Fault Diagnosis
Potential causes
Please shut down the power
supply immediately to avoid
further expansion of the fault
NO
NO
User Manual
Solutions
function)
Check whether motor is blocked
Replace inverter with proper
model
Check whether there is phase
loss
Check whether there are phase
loss or short circuit
Check input power supply
Seek for technical support
Seek for technical help
Seek for technical help
Seek for technical help
111