York S1-025-26390-001 Limit Switch Universal Application: Compatible with positive

Universal Application: Compatible with positive

as well as LP gas-air mixtures

or the indoor fan running continuously even when the thermostat is set to off

and up to 15 HP at 575V AC

York S1-025-26390-001 Limit Switch Universal Application: Compatible with positiveThe York S1 025 26390 001 limit switch is a critical safety component designed for precise thermal regulation within residential gas furnaces. This HVAC high limit switch features an automatic reset mechanism and is calibrated to operate within a specific 210 260 F temperature range. When diagnosing a furnace overheating fix, technicians often identify this part as the primary failsafe that interrupts power to the gas valve when plenum temperatures