The manufacturer will decline all responsibility if the recommendations and instructions regarding installation, maintenance and use are not observed and respected when using the appliance.
Light on, but motor does not work
The motor is blocked.
Call for service.
The internal wiring of motor is cut off/disconnected. An unpleasant smell may be produced.
Call for service.
Both light and motor do not work
Apart from the possibilities mentioned above, check the following:
Light is damaged.
Call for service.
Vibration
The motor, if damaged, can cause vibration.
Call for service.
The motor is not tightly fastened.
Call for service.
The appliance is not securely fixed.
Fixed the appliance securely.
Insufficient suction
The distance between the appliance and the cooker top is too great.
Readjust the distance.
Too much ventilation from open doors or windows.
Close some doors / windows.
The appliance is not level
The fixing screws are not tight enough.
Tighten the fixing screws and ensure that the appliance is horizontal.
The hanging screws are not tight enough.
Tighten the hanging screws and ensure that the appliance is horizontal.