York S1-025-31835-000 Auto-Reset Limit Switch Overview
The York S1-025-31835-000 is a factory-specified auto-reset (A/R) limit switch engineered for use in York heating and HVAC systems. Designed to protect equipment from overheating, this limit switch automatically opens the circuit when temperatures reach the set open point and resets itself once temperatures fall back to a safe level — providing reliable, hands-free overheat protection without the need for manual intervention.
Key Features
- Auto-reset (A/R) operation — automatically resets when temperature drops to the close setpoint
- Opens at 140°F to interrupt the circuit and prevent overheating
- Closes at 110°F to restore normal operation once safe temperatures are reached
- OEM York replacement part — ensures proper fit and performance in compatible York systems
- Provides critical overheat protection for furnaces and air handling equipment
- Durable construction built to withstand demanding HVAC operating environments
Specifications
- SKU / Part Number: S1-025-31835-000
- Brand: York
- Switch Type: Auto-Reset (A/R) Limit Switch
- Open Temperature: 140°F
- Close Temperature: 110°F
Application
This limit switch is a direct OEM replacement for York furnaces and air handling units requiring a 140°F open / 110°F close auto-reset limit switch. It plays a vital role in the safety control circuit, shutting down the burner or heating element if the heat exchanger or plenum exceeds the rated temperature threshold, then automatically restoring operation once the system cools to the close setpoint. Always verify compatibility with your specific York model before installation.
