What causes the abnormal noise when the Baojun 730 air conditioning is turned on?

[SanColton]

Baojun 730 may produce abnormal noise when the air conditioning is turned on due to the engagement sound of the air conditioning compressor electromagnetic clutch. If it is indeed the sound of the compressor electromagnetic clutch engaging, this is considered normal. When the cooling reaches the set temperature or the air conditioning pipeline pressure is too high, the compressor electromagnetic clutch will automatically disengage, leaving the compressor pulley in an idling state. When cooling is required again, the compressor electromagnetic clutch will engage, producing the abnormal noise during this process. Alternatively, the issue might stem from a malfunction in the air conditioning system. A common cause is excessively high internal pressure within the air conditioning pipelines, which requires adjustment. Another possibility is that the tension of the air conditioning belt needs to be adjusted. The 2019 Baojun 730 is positioned as a 7-seater family car, with body dimensions of 4710mm in length, 1780mm in width, and 1740mm in height, and a wheelbase of 2750mm.