York S1-024-34684-000 Pressure Switch Els PW 17895 it features a durable housing

it features a durable housing and high-conductivity terminals to mitigate arcing and heat buildup during frequent cycling

What causes this limit switch to frequent trip

or the outdoor fan and compressor failing to engage despite a 24V call from the thermostat

the external plug/wiring harness is generally a separate component or reused from the existing installation

This genuine Weil McLain part is a direct replacement for part number 511624403

York S1-024-34684-000 Pressure Switch Els PW 17895 it features a durable housingThe York S1 024 34684 000 Pressure Switch is a critical OEM safety component specifically engineered for York 2 stage furnaces. Designed as a dual stage differential switch, this part monitors the furnace draft inducer motor to ensure combustion gasses are properly vented before allowing the gas valve to energize. Technical specifications include a high stage deactivation rating of 1. 4 in WC and a low stage deactivation at 0. 4 in WC, ensuring