YORK 031-00940-001 Industrial Grade Processor Board for HVAC Automation

Product Overview

The YORK 031-00940-001 is a microprocessor-based processor circuit board manufactured by YORK International, a Johnson Controls company. This board serves as the central processing unit (CPU) and primary "brain" for YORK's large-tonnage centrifugal (YT, YK series) and screw (YS series) chillers, as well as other compatible HVAC equipment . Integrated within the YORK MicroComputer control panel or the OptiView Control Center, the YORK 031-00940-001 is responsible for executing complex refrigeration control algorithms, managing system protection logic, and handling all operator interface functions, making it the single most critical component for chiller operation .

 

Application Scenarios

In a large metropolitan hospital, the central plant relied on a 500-ton YORK YK centrifugal chiller to provide 24/7 cooling for operating rooms and data centers. One summer afternoon, the chiller abruptly shut down with a “System Fault” alarm on the OptiView panel. The facility’s engineering team traced the issue to a failed processor board, leaving the entire cooling system offline during peak demand. The quick replacement with a spare YORK 031-00940-001 restored full operation within two hours. The YORK 031-00940-001 continuously monitored over 100 critical sensor points—including suction/discharge pressures, motor currents, bearing temperatures, and oil differential pressure—and executed a controlled, safe startup sequence that gradually loaded the compressor, preventing any mechanical stress or surge events . This real-time decision-making capability of the YORK 031-00940-001 ensured that the hospital’s critical cooling infrastructure remained reliable without risking costly compressor damage.

In a large commercial office building, the chiller plant manager was facing high energy costs and frequent nuisance trips due to unstable control logic. The building management system (BMS) was unable to communicate with the chiller for remote setpoint adjustments. The facility deployed a replacement YORK 031-00940-001 with updated firmware and integrated it with a Metasys N2 or BACnet communication interface via the board’s available ports . The YORK 031-00940-001 enabled precise load matching through its adaptive guide vane control and electronic expansion valve (EXV) management algorithms, reducing plant energy consumption by 12%. The board’s comprehensive fault logging also allowed the BMS to retrieve historical operational data, enabling predictive maintenance that cut unplanned downtime by 70%.

 

Key Technical Parameters

Main Parameters Value / Description
Product Model 031-00940-001
Manufacturer YORK International (Johnson Controls)
Product Category Main Processor Circuit Board / CPU Board
Compatible Systems YORK OptiView Control Center, MicroComputer Control Panel
Adaptive Equipment YT/YK Centrifugal Chillers, YS Series Screw Chillers
Core Processor Industrial-grade microprocessor (Motorola 68K or PowerPC architecture)
Onboard Memory EPROM/Flash memory for firmware and configuration storage
Key Interfaces Proprietary backplane bus for I/O boards, display panel, communication ports
Power Supply Derived from chassis power supply (+5V, ±12V, +24V DC)
Operating Temperature 0°C to +60°C (control cabinet environment)
Mounting Type Edge connector or socket installation on backplane motherboard
Diagnostic Features On-board status LEDs; comprehensive fault logging capability
Firmware Requirement Must match specific chiller model and I/O hardware revision
Country of Origin United States

 

Reviews

Reviews

There are no reviews yet.

Be the first to review “YORK 031-00940-001 Industrial Grade Processor Board for HVAC Automation”

Your email address will not be published. Required fields are marked *

Post comment