What does the "DEFROST - HG 'ON'" mode indicate?

The "DEFROST - HG 'ON'" mode indicates that the refrigeration system is actively engaging in a defrost cycle using hot gas. During this mode, hot refrigerant gas is directed into the evaporator coils to melt any frost or ice buildup. This is essential for maintaining the efficiency and effectiveness of the refrigeration system, as excessive frost can impede heat exchange and lead to operational inefficiencies.

In this mode, the system temporarily suspends its normal cooling operation to facilitate the removal of frost. The activation of hot gas is a common method used in many refrigeration systems, particularly in applications like industrial freezers or refrigerated warehouses, where frost buildup can be significant. The hot gas raises the temperature of the coils, allowing the ice to melt and subsequently drain away.

Understanding this mode is crucial for operators as it directly impacts the performance and reliability of refrigeration systems. Properly managing defrost cycles ensures that the system continues to operate effectively without interruptions in cooling performance.