The York S1-026-34028-005 is an OEM automatic reset limit switch engineered to protect York furnaces and heating systems from overheating conditions. When supply air temperatures exceed safe operating thresholds, this limit switch interrupts the burner circuit to prevent equipment damage and potential safety hazards — then automatically resets once temperatures return to a safe level, minimizing system downtime.
How It Works
This auto-reset (AUTO) limit switch monitors heat exchanger or plenum temperatures during furnace operation. If the sensed temperature rises to the trip point, the switch opens the control circuit, shutting down the burner. Once the temperature drops back to the reset threshold, the switch closes automatically, restoring normal furnace operation without requiring manual intervention.
Key Specifications
- OEM Part Number: S1-026-34028-005
- Compatible Brand: York
- Switch Type: AUTO (Automatic Reset)
- Temperature Range: 150°F Reset / 180°F Trip
- Application: Furnace high-limit overheat protection
Features & Benefits
- Automatic reset design eliminates the need for manual reset after a limit trip
- OEM-specified component ensures proper fit and reliable performance in York heating systems
- Protects heat exchanger and furnace components from thermal damage
- Helps maintain safe system operation and supports equipment longevity
- Direct OEM replacement for straightforward installation
Application
Designed as a direct OEM replacement for York furnaces and air handlers requiring a 150–180°F automatic reset limit switch. Always verify compatibility with your specific York model before installation. Consult your equipment’s wiring diagram and service manual for proper installation procedures.
