York S1-8866-3281 Limit Switch
The York S1-8866-3281 Limit Switch is a critical safety component designed for fixed-mount applications in specific York, Coleman, and Luxaire gas furnaces. This L130-35F temperature limit functions as a normally closed switch that opens the electrical circuit when the plenum temperature reaches 130°F, preventing heat exchanger damage and potential fire hazards. As an auto-reset thermal switch, it automatically closes once the temperature drops below 95°F, allowing the system to resume normal operation if the high-limit condition was transient. Built for high-amperage HVAC circuits, this spst limit control ensures reliable flame rollout and over-temperature protection. When troubleshooting furnace short cycling or limit circuit lockout codes, verifying the continuity of the S1-8866-3281 is a standard diagnostic step for field technicians. This genuine OEM York replacement part ensures exact calibration and mounting alignment for residential HVAC maintenance and repair.
Key Benefits
- Precise Thermal Calibration: Fixed 130°F trip point and 95°F reset point ensure consistent furnace safety compliance.
- Automatic Reset Functionality: Eliminates the need for manual intervention following a temporary overheat condition once the system cools.
- OEM Compatibility: Exact replacement for York S1-8866-3281, ensuring correct terminal orientation and mounting footprint.
- Durable Construction: Engineered to withstand high-cycle thermal stress within the furnace heat exchanger cabinet.
Common Questions
What causes a York S1-8866-3281 to trip frequently?
Frequent tripping is usually indicative of restricted airflow, often caused by a clogged air filter, undersized ductwork, or a failing blower motor. If the furnace exceeds the 130°F threshold, the switch performs its safety function by cutting power to the gas valve.
Can I bypass this limit switch for testing purposes?
While technicians may briefly jumper the limit circuit to confirm a faulty switch, it must never be permanently bypassed. Operating a furnace without a functional thermal limit switch poses a severe risk of equipment failure and fire.
Is this switch compatible with 24V and 120V circuits?
The S1-8866-3281 is designed to handle standard HVAC control voltages. Always verify the electrical load against the manufacturer's specifications on the switch housing before installation.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The York S1-8866-3281 Limit Switch is a critical safety component designed for fixed-mount applications in specific York, Coleman, and Luxaire gas furnaces. This L130-35F temperature limit functions as a normally closed switch that opens the electrical circuit when the plenum temperature reaches 130°F, preventing heat exchanger damage and potential fire hazards. As an auto-reset thermal switch, it automatically closes once the temperature drops below 95°F, allowing the system to resume normal operation if the high-limit condition was transient. Built for high-amperage HVAC circuits, this spst limit control ensures reliable flame rollout and over-temperature protection. When troubleshooting furnace short cycling or limit circuit lockout codes, verifying the continuity of the S1-8866-3281 is a standard diagnostic step for field technicians. This genuine OEM York replacement part ensures exact calibration and mounting alignment for residential HVAC maintenance and repair.
Key Benefits
- Precise Thermal Calibration: Fixed 130°F trip point and 95°F reset point ensure consistent furnace safety compliance.
- Automatic Reset Functionality: Eliminates the need for manual intervention following a temporary overheat condition once the system cools.
- OEM Compatibility: Exact replacement for York S1-8866-3281, ensuring correct terminal orientation and mounting footprint.
- Durable Construction: Engineered to withstand high-cycle thermal stress within the furnace heat exchanger cabinet.
Common Questions
What causes a York S1-8866-3281 to trip frequently?
Frequent tripping is usually indicative of restricted airflow, often caused by a clogged air filter, undersized ductwork, or a failing blower motor. If the furnace exceeds the 130°F threshold, the switch performs its safety function by cutting power to the gas valve.
Can I bypass this limit switch for testing purposes?
While technicians may briefly jumper the limit circuit to confirm a faulty switch, it must never be permanently bypassed. Operating a furnace without a functional thermal limit switch poses a severe risk of equipment failure and fire.
Is this switch compatible with 24V and 120V circuits?
The S1-8866-3281 is designed to handle standard HVAC control voltages. Always verify the electrical load against the manufacturer's specifications on the switch housing before installation.
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.
