Bard 8402-120 Limit Control
The Bard 8402-120 Limit Control is a purpose-built L210 manual reset limit switch designed for critical thermal protection in Bard HVAC equipment. This OEM Bard replacement part functions as a high-limit safety, monitoring internal temperatures to prevent furnace overheating. Operating as a normally closed switch, it opens the electrical circuit when temperatures reach the fixed 210-degree Fahrenheit threshold. Unlike automatic reset controls, this manual reset limit control requires a technician to physically engage the reset button, ensuring that the root cause of the high-heat event—such as a clogged air filter, failing blower motor, or restricted return air—is identified and addressed. The robust design and precise calibration make the Bard 8402-120 essential for maintaining the operational integrity of wall-mount air conditioners and heat pumps. Professional installation is recommended to ensure correct limit switch wiring and system safety.
- Critical Thermal Safety: Fixed L210 setpoint provides reliable high-limit protection for HVAC systems.
- System Troubleshooting Support: Manual reset functionality forces a system inspection after a trip, preventing repeated overheating.
- OEM Compatibility: Exact Bard replacement part simplifies installation in Bard wall-mount and package units.
- Rugged Construction: Built to withstand the high-temperature environments of heat exchangers and blower compartments.
Why does my Bard 8402-120 limit control keep tripping?
Repeated tripping typically indicates restricted airflow. Check for clogged air filters, blocked supply registers, or a failing blower motor that isn't moving enough air across the heat exchanger.
Can I replace a manual reset limit with an automatic reset limit?
No. Safety controls must be replaced with the exact OEM specifications. A manual reset switch is a safety requirement to ensure overheating issues are manually investigated by a technician.
What is the difference between 8402-120 and 8402-120BX?
The "BX" suffix indicates bulk packaging used by Bard. The technical specifications and HVAC compatibility are identical for both part numbers.
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: $23.42
-65%$23.42
$8.20Bard 8402-120 Limit Control
The Bard 8402-120 Limit Control is a purpose-built L210 manual reset limit switch designed for critical thermal protection in Bard HVAC equipment. This OEM Bard replacement part functions as a high-limit safety, monitoring internal temperatures to prevent furnace overheating. Operating as a normally closed switch, it opens the electrical circuit when temperatures reach the fixed 210-degree Fahrenheit threshold. Unlike automatic reset controls, this manual reset limit control requires a technician to physically engage the reset button, ensuring that the root cause of the high-heat event—such as a clogged air filter, failing blower motor, or restricted return air—is identified and addressed. The robust design and precise calibration make the Bard 8402-120 essential for maintaining the operational integrity of wall-mount air conditioners and heat pumps. Professional installation is recommended to ensure correct limit switch wiring and system safety.
- Critical Thermal Safety: Fixed L210 setpoint provides reliable high-limit protection for HVAC systems.
- System Troubleshooting Support: Manual reset functionality forces a system inspection after a trip, preventing repeated overheating.
- OEM Compatibility: Exact Bard replacement part simplifies installation in Bard wall-mount and package units.
- Rugged Construction: Built to withstand the high-temperature environments of heat exchangers and blower compartments.
Why does my Bard 8402-120 limit control keep tripping?
Repeated tripping typically indicates restricted airflow. Check for clogged air filters, blocked supply registers, or a failing blower motor that isn't moving enough air across the heat exchanger.
Can I replace a manual reset limit with an automatic reset limit?
No. Safety controls must be replaced with the exact OEM specifications. A manual reset switch is a safety requirement to ensure overheating issues are manually investigated by a technician.
What is the difference between 8402-120 and 8402-120BX?
The "BX" suffix indicates bulk packaging used by Bard. The technical specifications and HVAC compatibility are identical for both part numbers.
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 Bard 8402-120 Limit Control is a purpose-built L210 manual reset limit switch designed for critical thermal protection in Bard HVAC equipment. This OEM Bard replacement part functions as a high-limit safety, monitoring internal temperatures to prevent furnace overheating. Operating as a normally closed switch, it opens the electrical circuit when temperatures reach the fixed 210-degree Fahrenheit threshold. Unlike automatic reset controls, this manual reset limit control requires a technician to physically engage the reset button, ensuring that the root cause of the high-heat event—such as a clogged air filter, failing blower motor, or restricted return air—is identified and addressed. The robust design and precise calibration make the Bard 8402-120 essential for maintaining the operational integrity of wall-mount air conditioners and heat pumps. Professional installation is recommended to ensure correct limit switch wiring and system safety.
- Critical Thermal Safety: Fixed L210 setpoint provides reliable high-limit protection for HVAC systems.
- System Troubleshooting Support: Manual reset functionality forces a system inspection after a trip, preventing repeated overheating.
- OEM Compatibility: Exact Bard replacement part simplifies installation in Bard wall-mount and package units.
- Rugged Construction: Built to withstand the high-temperature environments of heat exchangers and blower compartments.
Why does my Bard 8402-120 limit control keep tripping?
Repeated tripping typically indicates restricted airflow. Check for clogged air filters, blocked supply registers, or a failing blower motor that isn't moving enough air across the heat exchanger.
Can I replace a manual reset limit with an automatic reset limit?
No. Safety controls must be replaced with the exact OEM specifications. A manual reset switch is a safety requirement to ensure overheating issues are manually investigated by a technician.
What is the difference between 8402-120 and 8402-120BX?
The "BX" suffix indicates bulk packaging used by Bard. The technical specifications and HVAC compatibility are identical for both part numbers.
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.
