09. Malfunctions / Repairs
To be checked by the installer:
•
Is there a problem with the mains power supply?
•
Is the fuse blown?
•
Is the wiring loose?
•
Is the impeller blocked?
Fault
Fan does not start or rotates
too slow.
Motor protection switch
turns the fan off.
Impeller rotates slowly (less
than 330 rpm at full power
supply)
(1) Use original spare parts only!
16
All manuals and user guides at all-guides.com
Solution
No power supply:
•
Turn on mains power supply
•
Switch on controller
•
Check fuse and replace, if necessary(1)
With power supply:
•
Check motor and replace, if necessary(1)
•
Clean
•
Check motor and replace, if necessary (1)
•
Repair or replace controller (1)
•
Check if the correct voltage is supplied