Industrial Durability: Machined steel and cast components prevent linkage flex

allowing for tailored static pressure adjustments and airflow balancing in the field

the burner ports are likely restricted by oxidation or debris

The SPDT electrical switch provides robust continuity

Aaon R63971 Solenoid Coil 318973-401 Industrial Durability: Machined steel andThe Aaon R63971 Solenoid Coil is a precision engineered 24V holding solenoid coil designed specifically for high performance commercial and industrial HVAC systems. As an authentic Aaon HVAC replacement part, this coil provides the necessary electromagnetic force to actuate valves, dampers, and mechanical actuators with absolute reliability. Operating on 24V AC, the R63971 ensures consistent performance in air conditioning and refrigeration units,