Excessive moisture collection in the purge unit can indicate what issue?

• A. Refrigerant overcharge
• B. Tube leakage
• C. Compressor failure
• D. Evaporator freeze-up

Answer: (B)

Excessive moisture collection in the purge unit is primarily a sign of tube leakage. When there is a breach or leak in the system's tubing, it allows moisture from the environment to enter the refrigerant circuit. This moisture can mix with the refrigerant and lead to several problems, such as acid formation, which can damage the compressor and other components of the system.

Having moisture in the refrigerant can also cause freezing at lower temperatures, resulting in operational inefficiencies. Therefore, the presence of excessive moisture typically indicates that there are issues such as leaks in the tubes that need immediate attention to maintain system integrity and efficiency.