When can HFC-134a become combustible in a mobile air conditioning system?

HFC-134a, also known as tetrafluoroethane, is generally considered non-combustible under normal conditions. However, it can become combustible if exposed to high temperatures, particularly in the presence of an ignition source, such as an electrical spark or flame. Additionally, if HFC-134a leaks and mixes with oil or other flammable substances in a mobile air conditioning system, it may pose a combustion risk. Proper handling and maintenance are crucial to prevent such scenariOS.