Why does the air conditioning compressor freeze?

[LeEsther]

Reasons for air conditioning compressor freezing: 1. Excessive refrigerant charge often leads to excessively high condensation pressure in the refrigeration system, resulting in an excessive pressure difference between high and low pressures. This causes the liquid supply from the throttling component to exceed the heat exchange capacity of the evaporator, leading to liquid refrigerant returning to the compressor; 2. Improper design or adjustment of the throttling component, causing excessive refrigerant to return to the compressor and resulting in compressor freezing; 3. Blockage in the refrigeration system's return pipe leads to excessively high evaporation pressure, reducing the heat exchange capacity of the evaporator. This causes liquid refrigerant to return to the compressor, forming ice.