1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of the HITACHI PSC-A64S Central Control Unit for commercial air conditioning systems. Please read this manual thoroughly before using the product and keep it for future reference.
2. Safety Information
- Professional Installation: Installation and wiring must be performed by qualified and licensed HVAC technicians in accordance with all local and national electrical codes.
- Power Supply: Ensure the power supply matches the unit's requirements (AC220-240V) and that proper grounding is established.
- Electrical Hazard: Do not open the unit or attempt repairs yourself. High voltage is present and can cause severe injury or death. Disconnect power before any servicing.
- Environmental Conditions: Do not expose the unit to water, excessive humidity, or extreme temperatures.
3. Product Overview
The HITACHI PSC-A64S is a central control unit designed for commercial air conditioning applications. It features a clear LCD display and intuitive buttons for managing various air conditioning functions.
3.1 Front Panel
The front panel includes the main display and control buttons. The flap can be opened to reveal additional function buttons.
Figure 1: Front view of the control unit (flap closed)
Figure 2: Front view of the control unit (flap open)
3.2 Rear Panel and Connections
The rear panel houses the electrical connections for power, communication, and external inputs/outputs.
Figure 3: Rear view with wiring terminals
3.3 Product Video Overview
Video 1: A brief visual overview of the HITACHI PSC-A64S Central Control Unit.
4. Specifications
| Attribute | Value |
|---|---|
| Model Number | PSC-A64S |
| Brand Name | HITACHI |
| Product Size | 118.6*118.6*70 mm |
| Single Package Size | 17.2*12*17 cm |
| Color | White |
| Packaging | Carton Box |
| Type | Air Conditioning Fitting |
| Origin | Mainland China |
| Power Source | Electric |
| Application | Commercial |
| Net Weight (N.W.) | 0.32KG |
| Gross Weight (G.W.) | 0.6kg |
5. Setup and Installation
Installation of the PSC-A64S Central Control Unit requires specialized knowledge and should only be performed by certified professionals to ensure safety and proper functionality.
5.1 Wiring Connections
Refer to the diagram on the rear panel of the unit for correct wiring. Key connection points include:
- TB1 MAIN POWER: Connect AC220-240V power supply. Ensure proper EARTH connection.
- TB2 H-LINK CONNECTION: For communication with other HITACHI H-LINK compatible devices.
- CN1, CN2, CN3 TIMER INPUT OUTPUT: These terminals are for timer-related input and output signals. Consult your system's overall wiring diagram for specific usage.
Always ensure power is disconnected before making or breaking any electrical connections.
6. Operation
The control unit features a main display and several buttons for controlling the air conditioning system. The primary buttons are visible, while additional settings are accessible by opening the front flap.
6.1 Basic Controls (Flap Closed)
- 运行/停止 (Run/Stop): Press to turn the air conditioning unit ON or OFF.
- 机组 (Unit): Used to select or cycle through different indoor units or groups of units connected to the central controller.
- Up/Down Arrows (V/Λ): Typically used to adjust settings such as temperature or navigate menu options.
6.2 Advanced Controls (Flap Open)
Opening the front flap reveals additional buttons for more detailed control:
- 模式 (Mode): Selects the operating mode (e.g., Cool, Heat, Fan, Dry, Auto).
- 风速 (Fan Speed): Adjusts the fan speed (e.g., Low, Medium, High, Auto).
- 区域 (Zone): Manages settings for specific zones or areas if the system supports multi-zone control.
- 复位 (Reset): Resets certain settings or clears error indicators.
- 定时 (Timer): Sets ON/OFF timers for scheduled operation.
- 遥控器禁止 (Remote Control Disable): Disables or enables control from other remote controllers.
- 摆风 (Swing): Controls the louver swing function for air distribution.
- 设定温度 (Set Temperature): Fine-tunes the desired temperature setting.
- 点检 (Inspection): Initiates a system inspection or diagnostic check.
7. Maintenance
Regular maintenance ensures the longevity and optimal performance of your control unit.
- Cleaning: Wipe the surface of the control unit with a soft, dry cloth. Do not use abrasive cleaners, solvents, or water directly on the unit.
- Inspection: Periodically check for any visible damage to the unit or its wiring. If any damage is found, contact a qualified technician immediately.
- Professional Check-ups: It is recommended to have the entire air conditioning system, including the control unit, inspected by a professional HVAC technician annually.
8. Troubleshooting
If you encounter issues with your PSC-A64S control unit, consider the following general troubleshooting steps:
- No Power/Display: Check the main power supply to the unit and ensure all connections are secure. Verify the circuit breaker has not tripped.
- Unit Not Responding: Ensure the correct unit or zone is selected. Try pressing the 'Reset' button if available.
- Error Codes: If an error code appears on the display, consult your air conditioning system's main manual or contact a service professional, providing the specific error code.
- Intermittent Operation: Check for loose wiring connections or external interference.
For complex issues or if troubleshooting steps do not resolve the problem, contact a qualified service technician.
9. User Tips
- Professional Consultation: For any technical questions regarding installation, compatibility, or advanced operation, it is highly recommended to consult with a professional technical team.
- System Compatibility: Ensure the PSC-A64S is compatible with your specific HITACHI commercial air conditioning system before installation.
10. Warranty and Support
10.1 Warranty Information
The structured product data indicates 'None' for warranty. However, the seller's company profile states an 'After-sales service commitment, warranty for one year'. Please clarify warranty terms directly with your supplier or installer.
10.2 Technical Support
For technical support or inquiries, you may contact the seller or a qualified HVAC professional. When contacting support, please provide the brand name, model number (PSC-A64S), and a detailed description of your issue.
Email: zhouxingkeji@aliyun.com
