Aaon R63971 Solenoid Coil 320788-703 This thermal disc switch is

This thermal disc switch is engineered to prevent heat exchanger damage by interrupting the burner circuit if static pressure issues or airflow restrictions cause internal temperatures to exceed safe operating parameters

This versatile component is engineered for seamless integration with the Emerson Blue Wireless Easy Install Thermostat system (1F98EZ-1621)

leaving the board bypassed is never recommended

Verify 24V at the G terminal before diagnosing a board failure

000 BTU/hr for burner-only applications

Aaon R63971 Solenoid Coil 320788-703 This thermal disc switch isThe 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,