Apparatus and method for detecting fault of cooling fan

摘要

An apparatus for detecting a fault of a cooling fan includes an electronic switch connected to a negative (-) power input terminal of a cooling fan and turning on/off the cooling fan; a current detector connected to the electronic switch and detecting a current value of the cooling fan; an analog filter for filtering the detected current value; and a controller for converting the filtered current value into a digital current value and determining whether the cooling fan is improperly operated based on the converted digital current value and a pre-set upper threshold value and lower threshold value.