York S1-025-30265-700 Limit Switch

The York S1-025-30265-700 Limit Switch is a critical safety component designed for precise thermal regulation in residential and light commercial HVAC systems. As an OEM replacement part, this auto-reset limit switch is engineered to monitor heat exchanger temperatures, triggering a circuit break if internal cabinet conditions exceed safe operating thresholds. The S1-025-30265-700 is technically identical to S1-2702-317, providing a direct cross-reference for veteran technicians servicing York, Coleman, and Luxaire gas furnaces or air handlers.

This high limit control features a calibrated 185°F open temperature and a 150°F close temperature, ensuring the blower assembly maintains sufficient airflow while preventing thermal stress on the heat exchanger. Its heavy-duty construction is built to withstand the rapid cycling common in high-efficiency heating applications. When diagnosing furnace short cycling or blower motor continuous run issues, this 1/2-inch temperature control offers the exact electrical ratings and mounting footprint required to restore factory-spec operation without field modifications.

Key Benefits

• OEM Compatibility: Exact replacement for York S1-2702-317, ensuring seamless mechanical and electrical integration into existing harnesses.
• Automatic Reset: Eliminates the need for manual intervention by automatically closing the circuit once temperatures drop to 150°F.
• Precision Thermal Calibration: Fixed 185°F trip point prevents equipment damage and potential safety hazards during restricted airflow events.
• Versatile Application: Validated for use across multiple brands, including Coleman and Luxaire furnace models.

Common Questions

What causes a furnace limit switch to trip frequently?
Repeated tripping of the York S1-025-30265-700 usually indicates restricted airflow, often caused by a dirty air filter, blocked return vents, or a failing blower motor. If the switch remains open despite normal temperatures, the internal bimetal disc may have failed.

Is the S1-025-30265-700 interchangeable with S1-2702-317?
Yes, the S1-025-30265-700 is identical to S1-2702-317. They share the same 150-185F operating range and mounting flange, making them interchangeable for HVAC service calls.

How do I verify if this limit switch is faulty?
Technicians should perform a continuity test across the terminals. At room temperature, the switch should show 0 ohms (closed). If the furnace is cool but the switch is open, the component requires replacement.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.