Liquid slugging of the compressor can be caused by:

Liquid slugging of a compressor occurs when liquid refrigerant enters the compressor during operation, which can lead to severe mechanical damage. One of the primary factors that can lead to liquid slugging is TEV hunting.

When a thermostatic expansion valve (TEV) is hunting, it means it is constantly cycling between open and closed or adjusting rapidly in response to fluctuating pressures and temperatures. This erratic behavior can prevent proper refrigerant flow control, and as a result, too much liquid refrigerant may accumulate in the evaporator. When the compressor operates under these conditions, it can draw in liquid refrigerant instead of gaseous refrigerant, causing liquid slugging.

In contrast, low oil, high superheat setting, and high ambient conditions can have different effects on compressor operation and refrigerant management but do not directly contribute to the occurrence of liquid slugging in the same way TEV hunting does. Understanding the nuances of TEV operation and its impact on refrigerant flow is crucial for preventing issues like liquid slugging in compressors.