VLT
®
Series 3500
106
Troubleshooting
The Troubleshooting Flowcharts on the next pages are based on the most common problems.
Symptom
Motor runs unevenly
If the motor runs unevenly,
but no fault is indicated,
the cause can be incorrect
setting of the VLT drive.
Adjust the setting.
If the new setting cannot
make the motor run
evenly, contact Danfoss.
Symptom
Motor does not run
Are fault messages
displayed?
No
Yes
Is there backlight in the
display?
No
Yes
Is the unit connected to the
AC line?
Yes
See: 7)
See the fault
messages
section of
this manual.
See: 13)
1)
2)
3)
4)
5)
6)
