Bard HVAC 8402-068 Limit Switch
When you are troubleshooting a furnace that is short cycling or exhibiting a blower that stays on indefinitely, the Bard HVAC 8402-068 Limit Switch is a critical safety component to inspect. This 7-inch auto limit switch is engineered with a specific 260-30F temperature range, calibrated to open at 260°F and automatically reset when temperatures drop by a 30°F differential. Designed as a high-limit safety for residential and commercial gas-fired furnaces, including the Bard NCH050D30A Gas Fired Furnace, it provides essential protection against heat exchanger stress and potential fire hazards.
For contractors and technicians, this genuine Bard OEM part ensures a precise fit and exact electrical response compared to generic universal alternatives. The automatic reset furnace limit switch logic eliminates the need for manual intervention after a temporary overheat condition, once airflow is restored. This L260-30 replacement limit switch is built for durability in high-cycle environments, ensuring the primary safety circuit remains closed during normal operation while effectively interrupting the gas valve or control board circuit if internal plenum temperatures exceed safe operating parameters.
Key Benefits for HVAC Professionals:- Precise Thermal Calibration: Calibrated for a 260°F cut-out and 30°F differential to prevent overheating and protect the heat exchanger.
- OEM Compatibility: Specifically designed for Bard HVAC equipment, including gas furnaces, ensuring the correct probe depth and mounting footprint.
- Automatic Reset Logic: Features an auto-reset mechanism that restores the circuit once the furnace cools, reducing nuisance service calls.
- Reliable Safety Control: Acts as the primary thermal protection, preventing the system from operating under restricted airflow or blower failure conditions.
- How do I test if this limit switch is bad? Use a multimeter to check for continuity across the terminals when the switch is cool; a lack of continuity typically indicates a failed-open switch that requires replacement.
- Why does my original switch keep tripping? Frequent tripping is usually a symptom of restricted airflow, often caused by a dirty filter, blocked returns, or a failing blower motor, rather than a faulty switch itself.
- Is this compatible with other furnace brands? While this is a Bard 8402-068, it may cross-reference with other units requiring a 7-inch probe and 260-30 degree specs, but we recommend verifying the OEM part number first.
This item is not eligible for free shipping.
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.
Bard HVAC 8402-068 Limit Switch
When you are troubleshooting a furnace that is short cycling or exhibiting a blower that stays on indefinitely, the Bard HVAC 8402-068 Limit Switch is a critical safety component to inspect. This 7-inch auto limit switch is engineered with a specific 260-30F temperature range, calibrated to open at 260°F and automatically reset when temperatures drop by a 30°F differential. Designed as a high-limit safety for residential and commercial gas-fired furnaces, including the Bard NCH050D30A Gas Fired Furnace, it provides essential protection against heat exchanger stress and potential fire hazards.
For contractors and technicians, this genuine Bard OEM part ensures a precise fit and exact electrical response compared to generic universal alternatives. The automatic reset furnace limit switch logic eliminates the need for manual intervention after a temporary overheat condition, once airflow is restored. This L260-30 replacement limit switch is built for durability in high-cycle environments, ensuring the primary safety circuit remains closed during normal operation while effectively interrupting the gas valve or control board circuit if internal plenum temperatures exceed safe operating parameters.
Key Benefits for HVAC Professionals:- Precise Thermal Calibration: Calibrated for a 260°F cut-out and 30°F differential to prevent overheating and protect the heat exchanger.
- OEM Compatibility: Specifically designed for Bard HVAC equipment, including gas furnaces, ensuring the correct probe depth and mounting footprint.
- Automatic Reset Logic: Features an auto-reset mechanism that restores the circuit once the furnace cools, reducing nuisance service calls.
- Reliable Safety Control: Acts as the primary thermal protection, preventing the system from operating under restricted airflow or blower failure conditions.
- How do I test if this limit switch is bad? Use a multimeter to check for continuity across the terminals when the switch is cool; a lack of continuity typically indicates a failed-open switch that requires replacement.
- Why does my original switch keep tripping? Frequent tripping is usually a symptom of restricted airflow, often caused by a dirty filter, blocked returns, or a failing blower motor, rather than a faulty switch itself.
- Is this compatible with other furnace brands? While this is a Bard 8402-068, it may cross-reference with other units requiring a 7-inch probe and 260-30 degree specs, but we recommend verifying the OEM part number first.
This item is not eligible for free shipping.
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
When you are troubleshooting a furnace that is short cycling or exhibiting a blower that stays on indefinitely, the Bard HVAC 8402-068 Limit Switch is a critical safety component to inspect. This 7-inch auto limit switch is engineered with a specific 260-30F temperature range, calibrated to open at 260°F and automatically reset when temperatures drop by a 30°F differential. Designed as a high-limit safety for residential and commercial gas-fired furnaces, including the Bard NCH050D30A Gas Fired Furnace, it provides essential protection against heat exchanger stress and potential fire hazards.
For contractors and technicians, this genuine Bard OEM part ensures a precise fit and exact electrical response compared to generic universal alternatives. The automatic reset furnace limit switch logic eliminates the need for manual intervention after a temporary overheat condition, once airflow is restored. This L260-30 replacement limit switch is built for durability in high-cycle environments, ensuring the primary safety circuit remains closed during normal operation while effectively interrupting the gas valve or control board circuit if internal plenum temperatures exceed safe operating parameters.
Key Benefits for HVAC Professionals:- Precise Thermal Calibration: Calibrated for a 260°F cut-out and 30°F differential to prevent overheating and protect the heat exchanger.
- OEM Compatibility: Specifically designed for Bard HVAC equipment, including gas furnaces, ensuring the correct probe depth and mounting footprint.
- Automatic Reset Logic: Features an auto-reset mechanism that restores the circuit once the furnace cools, reducing nuisance service calls.
- Reliable Safety Control: Acts as the primary thermal protection, preventing the system from operating under restricted airflow or blower failure conditions.
- How do I test if this limit switch is bad? Use a multimeter to check for continuity across the terminals when the switch is cool; a lack of continuity typically indicates a failed-open switch that requires replacement.
- Why does my original switch keep tripping? Frequent tripping is usually a symptom of restricted airflow, often caused by a dirty filter, blocked returns, or a failing blower motor, rather than a faulty switch itself.
- Is this compatible with other furnace brands? While this is a Bard 8402-068, it may cross-reference with other units requiring a 7-inch probe and 260-30 degree specs, but we recommend verifying the OEM part number first.
This item is not eligible for free shipping.
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.
