Bard 8406-038 Limit Switch

The Bard 8406-038 is a critical safety component designed for high-temperature monitoring within Bard wall-mount and packaged HVAC units. This 240F manual reset limit switch functions as a primary safety control, interrupting the electrical circuit to the heating elements or compressors if internal temperatures exceed the 240-degree Fahrenheit threshold. Engineered for technical precision, this OEM Bard replacement part prevents thermal damage to sensitive internal components such as blowers and heat exchangers. Unlike automatic switches, the manual reset temperature switch requires a technician to physically intervene and inspect the unit once a trip occurs, ensuring that the root cause of the overheat condition—such as a failed blower motor or obstructed airflow—is diagnosed before system operation resumes. This genuine high-limit safety switch ensures precise calibration and terminal compatibility for seamless integration into existing control circuits, maintaining the operational integrity of the equipment in demanding commercial or residential environments.

• Critical Thermal Protection: Specifically calibrated as a 240F limit switch to prevent catastrophic equipment failure during overheat events.
• Manual Reset Mechanism: Provides a "lock-out" safety feature that forces a diagnostic check before the system can be restarted.
• OEM Compatibility: A genuine Bard 8406-038 part designed for direct fitment in Bard wall-mount air conditioners and heat pumps.
• Durable Construction: Built to withstand the high-cycle demands of industrial HVAC applications while maintaining accurate trip points.

• How do I know if my Bard limit switch needs replacement? If the HVAC blower is running but there is no heat, or if the system will not engage despite the thermostat calling for it, the Bard 8406-038 may have tripped. Check for continuity across the terminals; if the circuit is open at room temperature and the reset button does not restore it, the switch is likely defective.
• Why does this switch require a manual reset? The manual reset 8406-038 is designed to alert technicians to unsafe operating conditions. If the switch trips, it indicates a significant airflow or combustion issue that must be resolved to protect the system.
• Will this work with other HVAC brands? While some temperature ratings are similar, this specific HVAC limit switch is engineered with mounting brackets and terminal configurations optimized for Bard equipment. Use only specified OEM numbers to ensure safety compliance.

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.