Manual Fan Override: Integrated flexibility allows for continuous fan operation to assist with system diagnostics or airflow management

The York S1-025-31927-000 Auto Limit Switch is a high-precision OEM furnace safety control designed to monitor and regulate internal heat exchanger temperatures

the Ranco V2-408060-270 is sold as the valve body only

as restricted airflow often causes the limit to trip

professionals rely on the S1-024-35973-000 to maintain the original system's duty cycle and CFM requirements

Carrier 51HK400163 Knob 321042-401 Manual Fan Override: Integrated flexibilityCarrier 51HK400163 Knob Notes Item is Non Cancelable Non Returnable