What is one common indication of liquid refrigerant flooding the suction line?

When liquid refrigerant floods the suction line, it commonly results in low suction pressure and incorrect temperatures. This occurs because the presence of liquid refrigerant in the suction line can prevent the compressor from properly drawing in vapor. Instead of taking in the gaseous refrigerant needed for efficient operation, the compressor may intake liquid, which does not compress effectively. This reduces the pressure within the suction line and can also lead to temperature anomalies since the compressor is not able to perform its job of cycling refrigerant as designed.

In contrast, increased refrigerant efficiency, normal operating pressure, and excessive compressor noise are not direct indicators of refrigerant flooding. Increased efficiency would imply smooth, proper operation without refrigerant issues, while normal operating pressure suggests that the system is functioning optimally. Excessive noise can be indicative of various mechanical issues, but it does not specifically correlate with liquid refrigerant flooding in the suction line. Therefore, low suction pressure and incorrect temperatures are clear indicators that something is wrong, specifically pointing towards liquid flooding in the system.