York S1-025-50869-000 Pressure Switch 320720-756 preventing thermal stress on the

preventing thermal stress on the heat exchanger and ensuring proper venting performance

If the electrical component has failed

Is the gasket included with the 415-49655-00

If the internal slide of the 4-way valve is mechanically stuck

Always inspect the combustion integrity before resetting the switch

York S1-025-50869-000 Pressure Switch 320720-756 preventing thermal stress on theThe York S1 025 50869 000 Pressure Switch is a critical safety component designed for precise HVAC furnace combustion monitoring. Engineered to detect proper inducer motor operation, this atmospheric pressure switch ensures that the venting system is clear of obstructions before allowing the ignition sequence to proceed. As a genuine OEM York replacement part, it features a factory calibrated set point of 0. 10" WC, maintaining the tight tolerances