The York S1-024-41231-000 is an OEM auxiliary limit switch engineered to provide critical overheat protection in York heating systems. Designed to open at 200°F, this manual-reset (M/R) switch serves as a secondary safety device that interrupts furnace operation when abnormal temperature conditions are detected, helping to prevent heat exchanger damage and potential fire hazards.
Key Features
- OEM York replacement part — ensures proper fit and performance
- Opens at 200°F to protect against overheating conditions
- Manual reset (M/R) design requires deliberate technician intervention before restart, confirming the root cause has been addressed
- Functions as an auxiliary (secondary) limit switch for added system safety redundancy
- Direct drop-in replacement for compatible York furnace models
How It Works
The auxiliary limit switch monitors air temperature within the furnace plenum or heat exchanger area. If temperatures exceed the 200°F setpoint — due to restricted airflow, dirty filters, or other fault conditions — the switch opens the control circuit, shutting down the burner. Because this is a manual-reset device, a qualified technician must diagnose and correct the underlying issue before manually resetting the switch and restoring normal operation. This design adds an important layer of safety over auto-reset limit switches.
Application
- Compatible with select York gas furnaces and heating systems
- Replaces worn, failed, or nuisance-tripping auxiliary limit switches
- Recommended for installation by a licensed HVAC technician
Product Specifications
- Brand: York
- Part Number: S1-024-41231-000
- Switch Type: Auxiliary Limit Switch
- Open Temperature: 200°F
- Reset Type: Manual Reset (M/R)
