York S1-024-39490-000 Pressure Switch verify that the surface temperature

verify that the surface temperature does not exceed manufacturer physical limits

and then tighten the bars to lock in the required spacing for that specific unit

What causes a steam vent to hiss or leak water

preventing the setpoint drift often encountered with low-grade aftermarket alternatives

Using a switch with an incorrect pressure rating can lead to premature shutdown or unsafe operating conditions

York S1-024-39490-000 Pressure Switch verify that the surface temperatureThe S1 024 39490 000 is a factory caliber York pressure switch engineered to monitor vital air pressure differentials within the combustion blower assembly. This 0. 26 WC pressure switch acts as a primary safety limit, confirming that the inducer motor is exhausting flue gases effectively before allowing the gas valve to energize. Built as a furnace pressure switch replacement, this component is the direct functional successor to the 024 27557 000,