Bard HVAC 8402-148BX Limit Switch
The Bard HVAC 8402-148BX Limit Switch is a critical safety component designed for high-temperature monitoring in Bard wall-mount heat pumps and air conditioners. This L325 manual reset limit switch acts as a primary safety cutout, designed to open the electrical circuit when internal plenum temperatures exceed 325°F. Engineered as a direct replacement part, the 8402-148BX is identical to 8402-148, ensuring seamless mechanical and electrical compatibility during field service. For technicians performing HVAC furnace limit switch troubleshooting, this component ensures the blower assembly and heat exchanger operate within safe thermal tolerances. The manual reset (M/R) configuration prevents the unit from cycling until a manual inspection is performed, protecting the compressor and internal electronics from recurring overheating conditions. Utilizing OEM Bard replacement parts like this thermal disc maintains the original ETL or UL equipment certification and ensures proper HVAC safety switch installation within the narrow mounting footprint of Bard units.
Key Benefits- Precise Thermal Cutout: Factory-set at 325°F to prevent heat exchanger damage and ensure safe equipment operation.
- Manual Reset Safety: Requires a technician's inspection before the heating circuit can re-engage, preventing damage from underlying system faults.
- Direct OEM Match: Provides an exact physical and electrical drop-in replacement for the 8402-148, eliminating the need for mounting modifications.
- Durable Construction: Built to withstand the high-cycle vibrations and temperature fluctuations common in industrial wall-mount HVAC units.
How do I determine if the 8402-148BX limit switch is tripped?
Check for continuity across the switch terminals while the system is cool; no continuity indicates a tripped manual reset or a failed internal disc.
Does the "BX" suffix change the installation process for this Bard limit switch?
No, the 8402-148BX is functionally and dimensionally identical to the 8402-148, using the same mounting location and spade connectors.
Why does my Bard unit keep tripping the L325 manual reset switch?
Tripping is usually caused by restricted airflow, such as a blocked return, dirty filter, or a failing blower motor, causing plenum temperatures to exceed the 325°F threshold.
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: $33.88
-65%$33.88
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Description
The Bard HVAC 8402-148BX Limit Switch is a critical safety component designed for high-temperature monitoring in Bard wall-mount heat pumps and air conditioners. This L325 manual reset limit switch acts as a primary safety cutout, designed to open the electrical circuit when internal plenum temperatures exceed 325°F. Engineered as a direct replacement part, the 8402-148BX is identical to 8402-148, ensuring seamless mechanical and electrical compatibility during field service. For technicians performing HVAC furnace limit switch troubleshooting, this component ensures the blower assembly and heat exchanger operate within safe thermal tolerances. The manual reset (M/R) configuration prevents the unit from cycling until a manual inspection is performed, protecting the compressor and internal electronics from recurring overheating conditions. Utilizing OEM Bard replacement parts like this thermal disc maintains the original ETL or UL equipment certification and ensures proper HVAC safety switch installation within the narrow mounting footprint of Bard units.
Key Benefits- Precise Thermal Cutout: Factory-set at 325°F to prevent heat exchanger damage and ensure safe equipment operation.
- Manual Reset Safety: Requires a technician's inspection before the heating circuit can re-engage, preventing damage from underlying system faults.
- Direct OEM Match: Provides an exact physical and electrical drop-in replacement for the 8402-148, eliminating the need for mounting modifications.
- Durable Construction: Built to withstand the high-cycle vibrations and temperature fluctuations common in industrial wall-mount HVAC units.
How do I determine if the 8402-148BX limit switch is tripped?
Check for continuity across the switch terminals while the system is cool; no continuity indicates a tripped manual reset or a failed internal disc.
Does the "BX" suffix change the installation process for this Bard limit switch?
No, the 8402-148BX is functionally and dimensionally identical to the 8402-148, using the same mounting location and spade connectors.
Why does my Bard unit keep tripping the L325 manual reset switch?
Tripping is usually caused by restricted airflow, such as a blocked return, dirty filter, or a failing blower motor, causing plenum temperatures to exceed the 325°F threshold.
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.
