York 024 34681 000 Pressure Switch Els PW 17895 This HVAC damper actuator motor This HVAC damper actuator motor features a synchronous drive with a mechanical spring return for dependable "fail safe" positioning during power loss reducing call back rates and ensuring the ignitor replacement for 632625 meets original equipment specifications for amperage draw and resistance values this differential pressure switch prevents the heating cycle from initiating if hazardous venting conditions or restricted airflow are detected Use a digital manometer to verify the inducer is pulling the required "WC and a multi meter to check for continuity across the Normally Open terminals once the set point is reached