Air conditioning is used more frequently in summer, also easy, the most common fault fault because of refrigerant.

The most common air conditioning fault reason is the most simple and heat. Poor cooling in the design requirements as refrigerant pressure, temperature, and found in the pipeline system in circulation. Automobile air-conditioning in normal circumstances refrigerants (134A R12) don't consume, or need maintenance projects mainly condenser cooling fan of clean and working conditions.

While refrigerant leakage is usually composed of pipeline in the gasket aging, refrigerant pressure anomalies and system components, etc. Leakage repair program is a necessary supplement freezing oil, at the same time, the system with vacuum and filling station. In the course of maintenance must ensure refrigerant and oil quality, if use inferior or different types of refrigerant, will lead to abnormal, refrigeration compressor, pipeline corrosion, leakage, pipe explosion and important components, etc.

Whether through dry refrigerant plenty of tank, observe hole experienced mechanic from bubbles air flow can judge whether need refrigerants. If found not to lack of air conditioning refrigerants, should check whether there is refrigerant leakage, because of the air conditioning system fault has 80% is caused due to the refrigerant leakage.

Check whether the effect of air conditioning and refrigeration equipment factory is the same index of air conditioning will maintain a project, it is whether the air conditioning "healthy" diagnosis of an important link. As the standard cooling effect, Mazda six to eight degrees Celsius was 6.3, beyond the range means air-conditioning system problems.

Air conditioning refrigeration can not check system pressure is normal. Generally speaking, the normal air conditioning system for the low pressure, the pressure 3bar 2-15-25bar pressure, and by car. The normal air conditioner compressor should hand can easily turn, if use tools are not moved, can be identified compressor lock, must be replaced. If found particularly high pressure, high end at low pressure was particularly low, it is probably drying tank or expansion valves, when malfunction change is changed. Especially running 5 years to check the vehicle more often.

Finally, air conditioning system is an important component of the air filter can also -- for cooling effect and rides the environment caused by air. If the air filter dust deposited on too much, not only will it affect on filtering effect, will also reduce the amount of air cooling, suppression by. Therefore, the air conditioning and refrigeration system maintenance, air filter must clean (with duct blew the dust off), not clean, maintenance personnel will suggest owners for replacement