What are the reasons for the BMW 730 air conditioning not cooling?

[BriellaMarie]

Here are the reasons why the BMW 730 air conditioning is not cooling: 1. Compressor damage: The possible reason is the tripping of the compressor protection device. The overload protection of the compressor will trip, indicating that the system's high pressure is too high or the current is too large. The reasons for high pressure and overheating should be eliminated. 2. Poor heat dissipation or pipeline blockage: Check if the condenser pipe has dust and dirt, and clean the condenser. The pipeline system is blocked. Refer to the pressure gauge to judge, eliminate, and reprocess the system. 3. The evaporator is too dirty: The evaporator or filter is covered with dust and scale. The airflow becomes smaller, and the system pressure and temperature lose balance. Clean the evaporator or filter. 4. The air conditioner lacks refrigerant: Lack of refrigerant is also possible. When there is a lack of refrigerant, the exhaust temperature of the compressor will overheat, causing the overheating load protection switch to trip.