York S1-025-22273-003 Limit Switch This often stems from a

This often stems from a dirty furnace air filter

requiring a replacement like the 100241

the physical fit between the bulb and the well is critical

the York S1-025-29041-006 may be stuck open or out of calibration

Because it is a non-resettable thermal fuse

York S1-025-22273-003 Limit Switch This often stems from aThe York S1 025 22273 003 Limit Switch is a critical OEM safety component engineered for precise thermal monitoring in high performance HVAC systems. This SPST automatic reset limit switch is calibrated to open the electrical circuit at 160F, effectively halting operation to prevent heat exchanger damage or unsafe conditions. Once the induction or blower housing temperature stabilizes and drops to the 120F close setpoint, the switch automatically