
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 |






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