IMO DVGEC

10
10 Troubleshooting
Note:
Ifyoucannotndasolutiontoyourprobleminthissection,speaktoSystemairtechnicalsupport.
Problem Cause Solution
The product does not operate smoothly�
The fan impeller is not correctly
balanced�
Speak to Systemair technical support�
There is dirt on the fan impeller� Clean the fan impeller carefully� Refer
to 9�2 To clean the product page 9�
The fan impeller has damages or
deformations because the trans-
ported air contains aggressive media�
Speak to Systemair technical support�
The fan impeller does not turn in the
correct direction�
Speak to Systemair technical support�
There are unusually strong vibrations
in the product or the duct system�
Make sure that the product is correctly
installed� Do a check of the duct
system�
The product is operated in a resonant
frequency range�
Increase or decrease the fan speed
until the product operates smoothly�
Refer to 7 Commissioning page 8�
Theairoutputisnotsu󰀩cient.
The fan impeller does not turn in the
correct direction�
Speak to Systemair technical support�
The electrical connection is not
correctly done�
Make sure that the electrical connec-
tion agrees with the wiring diagrams�
The air pressure is too low because of
incorrect installation�
Do the necessary changes in the duct
system and installed components to
increase the air pressure� Refer to 7
Commissioning page 8�
Theairowshuttersareclosedornot
fully open�
Adjusttheairowshutters.
There is blockage in the air inlet or the
duct system�
Remove the blockage�
The product is not applicable for the
installation location�
Make sure that the product is applica-
ble for the installation location�
There is unusual noise when the
product starts or operates�
There is strain in the connections of
the duct system�
Loosentheconnections,aligntheparts
of the duct system correctly and tighten
the connections�