York S1-025-46404-000 Limit Switch
The York S1-025-46404-000 Limit Switch is a critical safety component designed for precise thermal monitoring within York, Coleman, and Luxaire gas furnaces. This L150-40F limit control operates on a fixed temperature profile, featuring a normally closed (N/C) configuration that opens the circuit when the internal plenum or heat exchanger temperature reaches 150°F. Once the system cools by a 40°F differential, the switch resets at 110°F. Reliable thermal detection is essential to prevent airflow restrictions, clogged secondary heat exchangers, or blower motor failures from compromising the heat exchanger integrity. As an OEM replacement part, the S1-025-46404-000 ensures direct compatibility with specific inducer and blower housing assemblies, utilizing standard terminal connections for a secure interface with the existing wiring harness. When troubleshooting a furnace that short cycles or remains locked in a limit-trip delay, verifying the continuity and setpoint of this furnace high limit switch is a standard diagnostic procedure for any veteran technician to maintain safe operational parameters.
Technical Specifications & Benefits
- Direct OEM Replacement: Engineered for seamless fitment in York and Coleman residential furnaces, matching factory mounting footprints.
- Fixed Thermal Profile: Calibrated to open at 150°F and close at 110°F, providing a consistent 40-degree differential for system protection.
- Safety Compliance: Acts as a primary high-limit cutout to mitigate the risk of fire or cracked heat exchangers due to overheating conditions.
- Industrial Construction: Designed to withstand the high-cycle environment of modern high-efficiency HVAC assemblies.
Common Technical Questions
What are the typical symptoms of a tripped S1-025-46404-000 switch? When this switch opens, the control board will typically disable the gas valve while keeping the indoor blower running to dissipate heat. Technicians will often see a diagnostic flash code corresponding to an open high-limit circuit.
What causes this limit switch to fail repeatedly? While the switch itself can wear over time, frequent tripping is usually a symptom of an underlying issue such as a dirty air filter, undersized ductwork, a failed capacitor on the blower motor, or an obstructed A-coil.
Is the L150-40F an automatic or manual reset? This specific model is an automatic reset switch. It will close the circuit once the sensed temperature drops below the 110°F threshold, though the furnace control board may require a power cycle to clear the lockout code.
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: $15.92
-65%$15.92
$5.57York S1-025-46404-000 Limit Switch
The York S1-025-46404-000 Limit Switch is a critical safety component designed for precise thermal monitoring within York, Coleman, and Luxaire gas furnaces. This L150-40F limit control operates on a fixed temperature profile, featuring a normally closed (N/C) configuration that opens the circuit when the internal plenum or heat exchanger temperature reaches 150°F. Once the system cools by a 40°F differential, the switch resets at 110°F. Reliable thermal detection is essential to prevent airflow restrictions, clogged secondary heat exchangers, or blower motor failures from compromising the heat exchanger integrity. As an OEM replacement part, the S1-025-46404-000 ensures direct compatibility with specific inducer and blower housing assemblies, utilizing standard terminal connections for a secure interface with the existing wiring harness. When troubleshooting a furnace that short cycles or remains locked in a limit-trip delay, verifying the continuity and setpoint of this furnace high limit switch is a standard diagnostic procedure for any veteran technician to maintain safe operational parameters.
Technical Specifications & Benefits
- Direct OEM Replacement: Engineered for seamless fitment in York and Coleman residential furnaces, matching factory mounting footprints.
- Fixed Thermal Profile: Calibrated to open at 150°F and close at 110°F, providing a consistent 40-degree differential for system protection.
- Safety Compliance: Acts as a primary high-limit cutout to mitigate the risk of fire or cracked heat exchangers due to overheating conditions.
- Industrial Construction: Designed to withstand the high-cycle environment of modern high-efficiency HVAC assemblies.
Common Technical Questions
What are the typical symptoms of a tripped S1-025-46404-000 switch? When this switch opens, the control board will typically disable the gas valve while keeping the indoor blower running to dissipate heat. Technicians will often see a diagnostic flash code corresponding to an open high-limit circuit.
What causes this limit switch to fail repeatedly? While the switch itself can wear over time, frequent tripping is usually a symptom of an underlying issue such as a dirty air filter, undersized ductwork, a failed capacitor on the blower motor, or an obstructed A-coil.
Is the L150-40F an automatic or manual reset? This specific model is an automatic reset switch. It will close the circuit once the sensed temperature drops below the 110°F threshold, though the furnace control board may require a power cycle to clear the lockout code.
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.
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Description
The York S1-025-46404-000 Limit Switch is a critical safety component designed for precise thermal monitoring within York, Coleman, and Luxaire gas furnaces. This L150-40F limit control operates on a fixed temperature profile, featuring a normally closed (N/C) configuration that opens the circuit when the internal plenum or heat exchanger temperature reaches 150°F. Once the system cools by a 40°F differential, the switch resets at 110°F. Reliable thermal detection is essential to prevent airflow restrictions, clogged secondary heat exchangers, or blower motor failures from compromising the heat exchanger integrity. As an OEM replacement part, the S1-025-46404-000 ensures direct compatibility with specific inducer and blower housing assemblies, utilizing standard terminal connections for a secure interface with the existing wiring harness. When troubleshooting a furnace that short cycles or remains locked in a limit-trip delay, verifying the continuity and setpoint of this furnace high limit switch is a standard diagnostic procedure for any veteran technician to maintain safe operational parameters.
Technical Specifications & Benefits
- Direct OEM Replacement: Engineered for seamless fitment in York and Coleman residential furnaces, matching factory mounting footprints.
- Fixed Thermal Profile: Calibrated to open at 150°F and close at 110°F, providing a consistent 40-degree differential for system protection.
- Safety Compliance: Acts as a primary high-limit cutout to mitigate the risk of fire or cracked heat exchangers due to overheating conditions.
- Industrial Construction: Designed to withstand the high-cycle environment of modern high-efficiency HVAC assemblies.
Common Technical Questions
What are the typical symptoms of a tripped S1-025-46404-000 switch? When this switch opens, the control board will typically disable the gas valve while keeping the indoor blower running to dissipate heat. Technicians will often see a diagnostic flash code corresponding to an open high-limit circuit.
What causes this limit switch to fail repeatedly? While the switch itself can wear over time, frequent tripping is usually a symptom of an underlying issue such as a dirty air filter, undersized ductwork, a failed capacitor on the blower motor, or an obstructed A-coil.
Is the L150-40F an automatic or manual reset? This specific model is an automatic reset switch. It will close the circuit once the sensed temperature drops below the 110°F threshold, though the furnace control board may require a power cycle to clear the lockout code.
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.
