ESCO Air Conditioning Practice Exam

What would be the most likely reason for finding the liquid line sweating where it leaves the dryer after compressor replacement?

1. Debris from the burned out compressor has clogged the dryer

2. Excessive refrigerant charge

3. Incorrect airflow

4. Undercharged system

The correct answer is: Debris from the burned out compressor has clogged the dryer

After a compressor replacement, the liquid line may start to sweat where it leaves the dryer. This is because old systems tend to accumulate debris, and when a new compressor is installed, this debris can become dislodged and clog the dryer. The other choices are incorrect because an excessive refrigerant charge would lead to higher than normal pressures, incorrect airflow would result in inadequate cooling, and an undercharged system would lead to insufficient pressure and cooling.