1, air conditioning system is not clean, the particulate impurities are inhaled by the compressor;
2, the system of refrigerant or excessive lubricating oil, resulting in compressor "liquid hit" and damage;
3, the compressor operating temperature is too high or long running time;
4, compressor lack of oil, wear serious;
5, the compressor electromagnetic clutch skidding and friction temperature too high;
6, the compressor power configuration is too small;
7. The manufacturing quality of the compressor is defective.