What might a clogged filter drier indicate in a refrigeration system?

A clogged filter drier is a significant indication of problems within a refrigeration system, particularly pointing towards the presence of moisture or contamination in the refrigerant. The filter drier's primary role is to remove moisture and particulates from the refrigerant, thus ensuring the system operates efficiently and preventing corrosion or damage to the compressor and other components. When the filter drier becomes clogged, it signals that the filtration system is overloaded with contaminants, which may include moisture that has entered the system or debris that has accumulated over time. This situation can lead to reduced efficiency, compromised performance, and potential failure of the refrigeration system if not addressed promptly.