A look: FFU centrifugal fan and fan
Centrifugal fan is a smooth rotation, if in the use and maintenance of abnormal sound to hear, the need to be vigilant to stop work immediately, check.
Failure causes and the corresponding elimination method:
The power supply is not open; the fan is bad: chassis shell with centrifugal fan produces FFU contact, there is no abnormal sound; the electrical damage; the fan beam heart.
The processing method of power check; check whether the fan with foreign body; if not more than, it needs to be replaced, electrical and fan, if it is to avoid the above problems, do not break open private, because manufacturers are handled by professionals.
Two look: air filter
In the maintenance of the use of the air filter is required to pay attention to the surface there is no damage and stains.
consulting