Description
The York S1-7970-3281/A is a factory OEM limit switch engineered to protect York heating systems from overtemperature conditions. Acting as a critical safety device within the furnace air-stream, it automatically interrupts the burner circuit when supply-air temperatures reach an unsafe level, then resets once temperatures return to a safe operating range.
Operating Specifications
- Open (Trip) Point: 145°F
- Close (Reset) Point: 115°F
- Differential: 30°F
- OEM York replacement part
- SKU: S1-7970-3281/A
Key Features
- Direct OEM replacement — ensures proper fit and function in compatible York furnaces
- Automatic reset design — closes at 115°F once the heat exchanger cools to a safe temperature
- Protects heat exchanger and system components from damage caused by restricted airflow or blower failure
- Reliable bimetal sensing element for consistent, repeatable trip performance
- Helps maintain system efficiency and extends equipment service life
Application
Designed as a direct OEM replacement for compatible York furnaces and air handlers, this limit switch is a straightforward swap for technicians performing routine maintenance or safety-component replacement. Always verify compatibility with the specific York model before installation.
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