York S1-024-35888-000 Limit Switch
The York S1-024-35888-000 Limit Switch is a critical safety component designed for precise thermal regulation within York, Coleman, and Luxaire gas-fired furnaces. This furnace high limit switch features a fixed setpoint calibrated to open at 235°F and close at 205°F, providing a reliable 30-degree differential that prevents heat exchanger damage during restricted airflow conditions. As a genuine OEM York replacement part, it ensures exact fitment and electrical compatibility within the safety string circuit. Field technicians recognize this L235-30 temperature limit switch for its SPST (Single Pole Single Throw) normally closed configuration, which immediately interrupts power to the gas valve if internal plenum temperatures exceed safe operational envelopes. Maintaining a clean HVAC safety control system is paramount for preventing nuisance tripping and ensuring the longevity of the inducer motor and heat exchanger. This component is essential for restoring system integrity during furnace troubleshooting and maintenance cycles.
Key Benefits for Technicians
- Precise Thermal Calibration: Factory-set 235°F opening point ensures immediate protection against overheating.
- OEM Standards: Direct drop-in replacement for the S1-024-35888-000, eliminating the need for mounting modifications or terminal resizing.
- Durable Construction: Engineered to withstand the high-temperature environment of the furnace heat exchanger wrap.
- System Compatibility: Validated for use across a wide range of Johnson Controls residential HVAC platforms.
Common Questions
What causes the York S1-024-35888-000 to trip frequently?
Frequent tripping is typically indicative of restricted airflow. Technicians should inspect for a clogged 1-inch or 4-inch pleated filter, blocked return air grilles, or a failing blower motor capacitor that prevents the assembly from reaching nominal CFM.
Is the S1-024-35888-000 a manual or automatic reset switch?
This specific model is an automatic reset limit switch. Once the plenum temperature drops below the 205°F reset threshold, the internal bimetal disc will snap back to the closed position, re-establishing the 24V signal to the ignition control board.
Can I bypass this switch for testing purposes?
Bypassing a safety limit is strictly for momentary diagnostic verification by qualified contractors. Operating a furnace with a bypassed York limit switch is a significant fire hazard and can lead to permanent heat exchanger failure.
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.
Original: $22.99
-65%$22.99
$8.05York S1-024-35888-000 Limit Switch
The York S1-024-35888-000 Limit Switch is a critical safety component designed for precise thermal regulation within York, Coleman, and Luxaire gas-fired furnaces. This furnace high limit switch features a fixed setpoint calibrated to open at 235°F and close at 205°F, providing a reliable 30-degree differential that prevents heat exchanger damage during restricted airflow conditions. As a genuine OEM York replacement part, it ensures exact fitment and electrical compatibility within the safety string circuit. Field technicians recognize this L235-30 temperature limit switch for its SPST (Single Pole Single Throw) normally closed configuration, which immediately interrupts power to the gas valve if internal plenum temperatures exceed safe operational envelopes. Maintaining a clean HVAC safety control system is paramount for preventing nuisance tripping and ensuring the longevity of the inducer motor and heat exchanger. This component is essential for restoring system integrity during furnace troubleshooting and maintenance cycles.
Key Benefits for Technicians
- Precise Thermal Calibration: Factory-set 235°F opening point ensures immediate protection against overheating.
- OEM Standards: Direct drop-in replacement for the S1-024-35888-000, eliminating the need for mounting modifications or terminal resizing.
- Durable Construction: Engineered to withstand the high-temperature environment of the furnace heat exchanger wrap.
- System Compatibility: Validated for use across a wide range of Johnson Controls residential HVAC platforms.
Common Questions
What causes the York S1-024-35888-000 to trip frequently?
Frequent tripping is typically indicative of restricted airflow. Technicians should inspect for a clogged 1-inch or 4-inch pleated filter, blocked return air grilles, or a failing blower motor capacitor that prevents the assembly from reaching nominal CFM.
Is the S1-024-35888-000 a manual or automatic reset switch?
This specific model is an automatic reset limit switch. Once the plenum temperature drops below the 205°F reset threshold, the internal bimetal disc will snap back to the closed position, re-establishing the 24V signal to the ignition control board.
Can I bypass this switch for testing purposes?
Bypassing a safety limit is strictly for momentary diagnostic verification by qualified contractors. Operating a furnace with a bypassed York limit switch is a significant fire hazard and can lead to permanent heat exchanger failure.
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 S1-024-35888-000 Limit Switch is a critical safety component designed for precise thermal regulation within York, Coleman, and Luxaire gas-fired furnaces. This furnace high limit switch features a fixed setpoint calibrated to open at 235°F and close at 205°F, providing a reliable 30-degree differential that prevents heat exchanger damage during restricted airflow conditions. As a genuine OEM York replacement part, it ensures exact fitment and electrical compatibility within the safety string circuit. Field technicians recognize this L235-30 temperature limit switch for its SPST (Single Pole Single Throw) normally closed configuration, which immediately interrupts power to the gas valve if internal plenum temperatures exceed safe operational envelopes. Maintaining a clean HVAC safety control system is paramount for preventing nuisance tripping and ensuring the longevity of the inducer motor and heat exchanger. This component is essential for restoring system integrity during furnace troubleshooting and maintenance cycles.
Key Benefits for Technicians
- Precise Thermal Calibration: Factory-set 235°F opening point ensures immediate protection against overheating.
- OEM Standards: Direct drop-in replacement for the S1-024-35888-000, eliminating the need for mounting modifications or terminal resizing.
- Durable Construction: Engineered to withstand the high-temperature environment of the furnace heat exchanger wrap.
- System Compatibility: Validated for use across a wide range of Johnson Controls residential HVAC platforms.
Common Questions
What causes the York S1-024-35888-000 to trip frequently?
Frequent tripping is typically indicative of restricted airflow. Technicians should inspect for a clogged 1-inch or 4-inch pleated filter, blocked return air grilles, or a failing blower motor capacitor that prevents the assembly from reaching nominal CFM.
Is the S1-024-35888-000 a manual or automatic reset switch?
This specific model is an automatic reset limit switch. Once the plenum temperature drops below the 205°F reset threshold, the internal bimetal disc will snap back to the closed position, re-establishing the 24V signal to the ignition control board.
Can I bypass this switch for testing purposes?
Bypassing a safety limit is strictly for momentary diagnostic verification by qualified contractors. Operating a furnace with a bypassed York limit switch is a significant fire hazard and can lead to permanent heat exchanger failure.
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.
