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No data is shown in the opera-
tor panel
Missing connection between the
frequency converter and the panel
(via the Profinet connection). "Com
fault" is diplayed in the menu Error.
Frequency converter defect.
Missing power supply to the opera-
tor panel
Reconnect or replace the Ethernet cable.
Check if they are light in the frequency
converter's display. Replace the frequen-
cy converter.
Restore the 24VDC connection
The blower stops unexpected
The blowers motor is overheated,
and has been switched off by the
PTC sensor in the motor
The motor should be allowed to cool
down, and the course for overheating
examined
Erratic blower performance
Pressure/vacuum- or flow control
transmitter is not correctly installed
in piping, and / or not correctly con-
nected to the blower.
The blowers frequency converter
has reached max. permissible
temperature, and "Inverter over-
temperature" is displayed in the
menu Error
Check that the pressure/vacuum- or flow
control transmitter is correctly installed in
the pipeline (airflow in arrows direction)
and properly connected to the blower
electrically.
Clean the air filter in the intake panel.
Check the cooling blowers on the fre-
quency converter.
If possible, reduce ambient temperature.
If possible, reduce the need for capacity
Poor performance of the blower
The blower is not capable of reach-
ing the setpoint, since the blowers
performance is to low
The blowers frequency converter
has reached max. permissible
temperature, and "Inverter over-
temperature" is displayed in the
menu Error
.
The differential pressure transducer
is mounted on a vibrating surface.
Adjust setpoint down to max. possible
performance.
Clean the air filter in the intake panel.
Check the cooling blowers on the fre-
quency converter.
If possible, reduce ambient temperature.
If possible, reduce the need for capacity.
Move the transducer to a vibration-free
surface
In case of doubt, contact a qualified service technician or Kongskilde service department.
