Symptom: the use of air conditioning to the maximum blower, select the air inlet for the fresh air, blowing from the air outlet is very small, and normal when the wind is almost 2, the car temperature is not down. Troubleshooting: Remove the front windshield glass below the water board, see the air conditioning duct filter has a lot of dust will filter the pores of the filter.
     Repair measures: the filter removed, the following dust knock out; if there is compressed air, so that air from the back of the filter paper blowing, dust better.
     Summary analysis: air conditioning duct filter is the role of filtering pollen, dust,
     Leaves and other objects, if too much dust will hinder the air into the car, resulting in reduced air volume, heat exchange efficiency, cab air can not be cooled.