1. Introduction
The ZTYXUX STC-9100 is a versatile cold storage temperature controller designed for precise temperature management in various refrigeration applications. It features a clear digital display, intuitive controls, and robust functionality to ensure optimal performance and energy efficiency. This manual provides detailed instructions for the proper installation, operation, and maintenance of your STC-9100 controller.
2. Safety Information
- Always disconnect power before installation or maintenance to prevent electric shock.
- Ensure all wiring connections are secure and comply with local electrical codes.
- Do not expose the controller to excessive moisture or extreme temperatures outside its operating range.
- Only qualified personnel should perform installation and repair.
- Keep the device away from flammable materials.
3. Product Overview
The STC-9100 features a compact design with a bright LED display for clear temperature readings. It includes dedicated buttons for setting parameters and navigating menus. The front panel is designed for easy integration into control panels. The image above shows the front view of the STC-9100 controller, highlighting its digital display and control buttons.
Key Features:
- Temperature measurement and control.
- Defrost control.
- Temperature calibration.
- Alarm functions for high/low temperature and sensor error.
- Compressor delay protection.
4. Setup and Installation
4.1 Wiring Diagram
Refer to the wiring diagram printed on the side of the controller or inside the packaging for correct electrical connections. Ensure all connections are made by a qualified electrician.
4.2 Mounting
The STC-9100 is designed for panel mounting. Cut an opening of the specified dimensions (refer to specifications) in your control panel. Insert the controller and secure it using the provided mounting clips.
4.3 Sensor Placement
Place the temperature sensor in the area where temperature control is required, ensuring it is not directly exposed to airflow from the evaporator or condenser, which could lead to inaccurate readings.
5. Operating Instructions
5.1 Power On/Off
Connect the power supply to the controller. The display will light up, showing the current temperature. To turn off, disconnect the power supply.
5.2 Setting Temperature Parameters
- Press the 'SET' button once to view the current set temperature.
- Press and hold the 'SET' button for 3 seconds to enter parameter setting mode. The display will show 'F1'.
- Use the 'UP' or 'DOWN' arrows to navigate through parameters (F1, F2, F3, etc.).
- Press 'SET' again to view the value of the selected parameter.
- Use the 'UP' or 'DOWN' arrows to adjust the value.
- Press 'SET' to confirm the new value and move to the next parameter, or press the power button to exit and save all changes.
5.3 Common Parameters:
| Parameter | Description | Default Value |
|---|---|---|
| F1 | Temperature Setpoint | 0.0°C |
| F2 | Temperature Hysteresis | 2.0°C |
| F3 | Compressor Delay Time | 3 minutes |
| F4 | Defrost Cycle Time | 6 hours |
6. Maintenance
- Regularly clean the controller's surface with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Check wiring connections periodically to ensure they are secure and free from corrosion.
- Ensure the temperature sensor is clean and properly positioned for accurate readings.
- If the display becomes dim or unresponsive, check the power supply.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display shows 'EE' | Sensor error or open circuit. | Check sensor connection; replace sensor if damaged. |
| Display shows 'HH' or 'LL' | Temperature exceeds high/low alarm limit. | Check refrigeration system; adjust alarm limits if necessary. |
| Compressor not starting | Temperature not low enough, delay protection active, or wiring issue. | Wait for delay, check setpoint, verify wiring. |
8. Specifications
| Attribute | Value |
|---|---|
| Model | STC-9100 |
| Power Supply | Varies by model (e.g., 220VAC, 50/60Hz) |
| Temperature Measuring Range | -50°C to 99°C (-58°F to 210°F) |
| Control Temperature Range | -50°C to 99°C (-58°F to 210°F) |
| Resolution | 0.1°C |
| Accuracy | ±1°C |
| Sensor Type | NTC sensor |
| Relay Capacity | Compressor: 10A/250VAC; Defrost: 10A/250VAC; Fan: 10A/250VAC |
| Panel Size | 75mm x 34.5mm |
| Mounting Hole Size | 71mm x 29mm |
| Item Weight | 50 Grams (approx. 1.76 ounces) |
9. Warranty and Support
This ZTYXUX product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For specific warranty terms and duration, please refer to the product packaging or contact your retailer.
For technical support, troubleshooting assistance, or warranty claims, please contact ZTYXUX customer service. You may find contact information on the product packaging or the official ZTYXUX website. Please have your model number (STC-9100) and purchase details ready when contacting support.
