York S1-025-27747-003 Rollout Switch Els PW 17895 verifying the continuity of the

verifying the continuity of the York high limit switch is a fundamental diagnostic step to ensure the appliance maintains its intended sequence of operation and thermal protection margins

Corrosion Resistance: Thermo-bonded coating prevents scale accumulation on the thermostat probe

22 certification

keeping condenser temperatures stable during peak summer loads

which is critical for optimizing blower operation cycles and improving overall heat exchange efficiency by managing post-cycle airflow

York S1-025-27747-003 Rollout Switch Els PW 17895 verifying the continuity of theThe York S1 025 27747 003 is a precision engineered flame rollout switch designed for critical safety monitoring within residential gas furnace burner compartments. Featuring a fixed 160 degrees F trip point, this manual reset sensor is a high limit safety device that opens the SPST (Single Pole Single Throw) circuit if it detects excessive heat or flame spillage outside the heat exchanger. This OEM replacement part is vital for preventing hazardous