Bard 8612-029 Controller Board

The Bard 8612-029 MC3000 Controller Board is a specialized microprocessor-based controller designed for dual-unit HVAC systems, specifically those utilizing Bard wall-mount heat pumps and air conditioners. This solid-state control board serves as the direct 8612-019 replacement, offering enhanced logic for lead/lag sequencing, redundancy, and staged cooling. Engineered for telecommunications shelters and modular classrooms, the Bard 8612-029 manages complex environmental demands by monitoring internal temperature sensors and adjusting system output to maintain precise setpoints. The board features integrated alarm relays and communication ports for remote monitoring, ensuring the MC3000 series controller provides reliable fail-safe operation. Technical installers should note that this OEM replacement board is critical for maintaining proper unit rotation and staged compressor operation in dual-unit HVAC applications where uptime is non-negotiable.

Key Benefits

• Direct OEM Replacement: Replaces the legacy 8612-019 board with updated circuitry for MC3000 series compatibility.
• Lead/Lag Functionality: Automates dual-unit sequencing to balance compressor run time and extend system longevity.
• Integrated Diagnostics: Provides on-board fault monitoring for rapid troubleshooting of sensor errors and communication failures.
• Standardized Mounting: Fits original footprint for efficient field swaps and minimized downtime during service calls.

Common Questions

Is the 8612-029 backwards compatible with older MC3000 cabinets?
Yes, this Bard controller board is the designated field replacement for the 8612-019 and is designed to interface with existing MC3000 series wiring harnesses.

How do I configure the lead/lag rotation on this board?
Rotation is managed through the MC3000 display interface; however, the board hardware dictates the switching logic between Unit 1 and Unit 2 based on the programmed interval.

Does this board support remote alarm notification?
Yes, the Bard 8612-029 includes dry contact terminals for NO/NC alarm outputs, allowing integration with building management systems or external dialers.

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.