What does a higher than expected pressure reading indicate when checking a refrigeration system?

A higher than expected pressure reading when checking a refrigeration system can indeed indicate the presence of a blockage or non-condensables in the system. When the pressure exceeds normal operating levels, it suggests that there is an impediment to the flow of the refrigerant or that unwanted substances, such as air or moisture, are compromising the refrigerant flow.

These blockages or non-condensables prevent the proper circulation and heat exchange within the system, leading to inefficiencies and potential damage if not addressed. Understanding this relationship is crucial for diagnosing issues in refrigeration systems, as it directly affects their efficiency and performance. Identifying such problems early can prevent more serious issues down the line, making it essential to monitor pressure readings closely.