What causes the intermittent cooling and heating of the BYD e5 air conditioning?

[DiHazel]

Here are the reasons for the intermittent cooling and heating of the BYD e5 air conditioning: 1. Loose compressor wiring: When the air conditioning is first turned on, the compressor starts working, compressing the gaseous refrigerant in the system into a high-temperature, high-pressure gas, which is then sent to the condenser for cooling. After cooling, it becomes a high-temperature, high-pressure liquid, passing through the dryer for drying and filtration, then through the expansion valve and evaporator, before returning to the compressor. 2. Poor contact of the pressure switch: When the high-temperature, high-pressure liquid passes through the expansion valve, all the liquid expands and undergoes a drastic change, turning into a low-temperature, low-pressure liquid. This low-temperature, low-pressure liquid causes the temperature of the evaporator to drop rapidly, so the air blown by the air conditioning motor becomes cold after passing through the evaporator. 3. Compressor clutch failure: When the temperature gradually rises above 0 degrees, the ice blockage in the pipeline begins to slowly melt, and part of the pipeline resumes refrigerant circulation, restoring the cooling effect. This leads to the next cycle of ice blockage, resulting in the phenomenon where the air conditioning blows cold air when first turned on but soon turns into hot air.