40
BA0440321BBA22
Fault
Possible cause
Action
Fan rotates at maximum
speed, independent of
the setpoint.
Fan is in closed loop.
Change parameter with “EC-Param” or
contact the Rosenberg support.
Fan does not run at max-
imum speed.
Max. setpoint is not pre-
sent on analog 1.
Check setpoint according to pin connec-
tion and increase.
Setpoint on analog 1 is
too high.
Limit setpoint according to pin connec-
tion.
Temperature dependent
power derating is acti-
vated.
Control the airflow temperature and am-
bient temperature for its limits (Name-
plate data).
Fan turns but there is no
or not enough airflow.
Rotation speed of the fan
too low.
Please see “fan does not run at maxi-
mum speed“.
Air flow interrupted.
Check duct system (e.g. suction, filter,
sealing caps).
Calculated pressure
does not correspond to
the real value.
Check fan selection.
Unfavorable installation
conditions.
Check the installation situation.
(chapter 6.1)
Vibrations / noises in fan.
Chafing of impeller.
Check impeller for dirt and clearance.
Check mounting of Impeller and inlet
cone.
Deformation.
Stop fan immediately. Contact Rosen-
berg support.
Dirty impeller.
Clean impeller.
Damaged ball bearings.
Stop fan immediately. Contact Rosen-
berg support.
Wrong Operating point
(only axial-fans).
Operating point is in the forbidden area
of the air curve. Reduce pressure losses.
RCD-Switch or fuse trips.
Ground fault or short
circuit.
Check if the cables are damaged or
moisture is present.
Defect of the motor
and/or the electronic.
Contact Rosenberg support.
Summary of Contents for AK G Series
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