What Causes Excessive Ice Buildup on a Heatcraft Evaporator?
Excessive ice buildup on a Heatcraft evaporator can restrict airflow, reduce cooling performance, and increase the workload on a commercial refrigeration system. Common causes include a failed defrost heater, faulty defrost control, restricted airflow, blocked drainage, and excess moisture entering the refrigerated space. Simply removing the ice may only provide temporary relief if the underlying problem remains. This guide explains why a Heatcraft evaporator ices up, which Heatcraft evaporator parts may need inspection, and how to troubleshoot and prevent recurring ice buildup. What Causes a Heatcraft Evaporator to Ice Up? A Heatcraft evaporator can ice up when moisture freezes on the coil faster than the system can remove it during defrost. A light layer of frost can occur during normal operation, but heavy or recurring ice usually indicates a problem that needs attention. 1. Failed Defrost Heater The defrost heater melts frost from the evaporator coil during the defro...