and cooling modes

the FPC-1000-P prevents burner operation during low-water conditions via sophisticated resistance sensing that significantly reduces nuisance trips

and V47N series pressure-actuated valves common in water-cooled condenser systems

This 20x12x0

Using an internal gasket with this sensor is non-negotiable for maintaining proper cabinet pressure and thermal isolation

York S1-025-27747-017 Rollout Switch 318172-701 and cooling modesThe York S1 025 27747 017 Rollout Switch is a critical OEM replacement part designed for high limit temperature monitoring in York, Coleman, and Luxaire gas furnaces. This rollout switch is precision calibrated to trip at 350F, effectively breaking the 24V safety circuit to the gas valve if flame rollout or heat exchanger compromise occurs. As a manual reset rollout switch, it requires a physical inspection of the combustion area by a technician