Bard 8201-079BX Relay

The Bard 8201-079BX is a 24V Solid State Lockout Relay engineered for precision control in high-performance HVAC systems. As the direct replacement for 8201-079, this Bard HVAC lockout relay offers improved reliability by utilizing advanced solid-state circuitry, eliminating the mechanical wear points found in legacy models. It is frequently applied in Bard wall-mount units, air handlers, and rooftop packages to manage compressor lockout conditions effectively. This relay facilitates high-efficiency low voltage circuit protection, ensuring your system enters a safe state during high-pressure or cold-start faults to prevent catastrophic equipment failure. When performing a Bard 8201-079BX installation, the compact panel-mount design allows for seamless integration into existing control boards. Its low power consumption and resistance to electrical noise make it an essential HVAC replacement part for technicians maintaining system integrity in demanding industrial and commercial environments. By upgrading to the 8201-079BX relay, contractors ensure responsive switching and robust protection against circuit overloads.

• Direct OEM Replacement: Replaces 8201-079 without requiring wiring modifications, ensuring a perfect fit.
• Solid-State Durability: Provides faster switching and longer operational life compared to standard electromechanical relays.
• Enhanced System Safety: Monitors 24V signals to trigger a hard lockout, protecting the compressor from repeated short-cycling.
• Versatile Application: Compatible with a wide range of Bard units, including air conditioners, heat pumps, and chillers.
• Compact Footprint: Designed for easy mounting in tight electrical enclosures and control panels.

Common Questions

Is the Bard 8201-079BX compatible with older 8201-079 models?
Yes, the 8201-079BX is specifically designed as the direct technical successor. The "BX" suffix indicates updated manufacturing, but the electrical specifications and pin-out remain identical for backward compatibility.

How do I reset a lockout initiated by this relay?
To reset a hard lockout, you must break the 24V signal to the 'R' or 'Y' terminals. This is typically achieved by cycling the thermostat at the wall or briefly disconnecting the main power supply to the unit.

What are the symptoms of a failing lockout relay?
A faulty relay may result in the compressor failing to energize despite a call for cooling, or conversely, failing to lock out the system during a verified pressure fault. Testing for 24V at the ALR terminal during a fault can confirm if the relay is functioning correctly.

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.