York S1-7660-3591 Limit
The York S1-7660-3591 is a precision-calibrated bimetal high limit switch replacement designed for high-cycle reliability in residential and light commercial furnaces. This safety-critical L150-20F limit control is engineered with a snap-acting disc that opens the burner circuit at a 150°F operating threshold and automatically closes at a 130°F reset point. As a direct-fit Johnson Controls HVAC part, this unit serves as the factory-authorized replacement for the legacy 1065638 model, ensuring a seamless installation into existing mounting brackets and wiring harnesses. When troubleshooting, technicians should verify that the 150Op 130Cl specifications align with the unit’s original data plate to maintain the integrity of the heat exchanger safety loop. Frequent cycling of this York furnace limit switch may indicate underlying airflow issues, such as a clogged evaporator coil or restricted ductwork, which this OEM component is designed to detect and protect against by interrupting the heating cycle.
- OEM Engineering: Direct replacement for part number 1065638 to ensure terminal and footprint compatibility.
- Automatic Reset Logic: Opens at 150°F and closes at 130°F, allowing the system to resume once safe internal temperatures are reached.
- High-Temperature Durability: Robust construction designed to withstand the thermal stresses of the furnace plenum environment.
How to test a furnace limit switch? Isolate the power and remove the leads to perform a continuity test across the terminals. At room temperature, the switch should show 0 ohms; if the circuit is open, the internal bimetal disc has failed or the limit is currently tripped.
What temperature does York S1-7660-3591 trip at? This specific limit is calibrated to trip (open) at 150°F and will automatically reset (close) once the plenum temperature drops to 130°F.
Is York 1065638 compatible with S1-7660-3591? Yes, the S1-7660-3591 is the current engineering replacement for the discontinued 1065638, providing the same form, fit, and thermal function.
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: $26.02
-65%$26.02
$9.11York S1-7660-3591 Limit
The York S1-7660-3591 is a precision-calibrated bimetal high limit switch replacement designed for high-cycle reliability in residential and light commercial furnaces. This safety-critical L150-20F limit control is engineered with a snap-acting disc that opens the burner circuit at a 150°F operating threshold and automatically closes at a 130°F reset point. As a direct-fit Johnson Controls HVAC part, this unit serves as the factory-authorized replacement for the legacy 1065638 model, ensuring a seamless installation into existing mounting brackets and wiring harnesses. When troubleshooting, technicians should verify that the 150Op 130Cl specifications align with the unit’s original data plate to maintain the integrity of the heat exchanger safety loop. Frequent cycling of this York furnace limit switch may indicate underlying airflow issues, such as a clogged evaporator coil or restricted ductwork, which this OEM component is designed to detect and protect against by interrupting the heating cycle.
- OEM Engineering: Direct replacement for part number 1065638 to ensure terminal and footprint compatibility.
- Automatic Reset Logic: Opens at 150°F and closes at 130°F, allowing the system to resume once safe internal temperatures are reached.
- High-Temperature Durability: Robust construction designed to withstand the thermal stresses of the furnace plenum environment.
How to test a furnace limit switch? Isolate the power and remove the leads to perform a continuity test across the terminals. At room temperature, the switch should show 0 ohms; if the circuit is open, the internal bimetal disc has failed or the limit is currently tripped.
What temperature does York S1-7660-3591 trip at? This specific limit is calibrated to trip (open) at 150°F and will automatically reset (close) once the plenum temperature drops to 130°F.
Is York 1065638 compatible with S1-7660-3591? Yes, the S1-7660-3591 is the current engineering replacement for the discontinued 1065638, providing the same form, fit, and thermal function.
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 S1-7660-3591 is a precision-calibrated bimetal high limit switch replacement designed for high-cycle reliability in residential and light commercial furnaces. This safety-critical L150-20F limit control is engineered with a snap-acting disc that opens the burner circuit at a 150°F operating threshold and automatically closes at a 130°F reset point. As a direct-fit Johnson Controls HVAC part, this unit serves as the factory-authorized replacement for the legacy 1065638 model, ensuring a seamless installation into existing mounting brackets and wiring harnesses. When troubleshooting, technicians should verify that the 150Op 130Cl specifications align with the unit’s original data plate to maintain the integrity of the heat exchanger safety loop. Frequent cycling of this York furnace limit switch may indicate underlying airflow issues, such as a clogged evaporator coil or restricted ductwork, which this OEM component is designed to detect and protect against by interrupting the heating cycle.
- OEM Engineering: Direct replacement for part number 1065638 to ensure terminal and footprint compatibility.
- Automatic Reset Logic: Opens at 150°F and closes at 130°F, allowing the system to resume once safe internal temperatures are reached.
- High-Temperature Durability: Robust construction designed to withstand the thermal stresses of the furnace plenum environment.
How to test a furnace limit switch? Isolate the power and remove the leads to perform a continuity test across the terminals. At room temperature, the switch should show 0 ohms; if the circuit is open, the internal bimetal disc has failed or the limit is currently tripped.
What temperature does York S1-7660-3591 trip at? This specific limit is calibrated to trip (open) at 150°F and will automatically reset (close) once the plenum temperature drops to 130°F.
Is York 1065638 compatible with S1-7660-3591? Yes, the S1-7660-3591 is the current engineering replacement for the discontinued 1065638, providing the same form, fit, and thermal function.
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.
