1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the Fafeicy STC-1000 Microcomputer Intelligent Temperature Controller. Please read this manual thoroughly before using the device to ensure proper function and safety. The STC-1000 is designed for precise temperature control in various applications requiring both refrigeration and heating.
Figure 1: Fafeicy STC-1000 Temperature Controller with included sensor cable.
2. Product Overview
2.1 Key Features
- Accurate Digital Display: Provides precise temperature readings for effective control.
- Durable Housing: Constructed with ABS flame retardant plastic for enhanced safety.
- Integrated Sensor: Includes a 1-meter NTC sensor for convenient temperature measurement.
- Wide Temperature Range: Capable of controlling temperatures from -55°C to 99°C.
- Automatic Switching: Supports both refrigeration and heating modes, switching automatically as needed.
2.2 Front Panel Components
Figure 2: Front panel of the STC-1000 controller with labeled buttons and digital display.
- Digital Display Window: Shows current temperature and setting parameters.
- Power Switch (⏻): Turns the device on or off.
- Increase Temperature (▲): Used to increase temperature setpoints or parameter values.
- Decrease Temperature (▼): Used to decrease temperature setpoints or parameter values.
- Setting Button (S): Enters setting mode and confirms selections.
3. Specifications
| Parameter | Value |
|---|---|
| Product Model | STC-1000 |
| Optional Voltage | 12V/24V/110V - 220VAC |
| Temperature Control Range | -55°C to 99°C |
| Machine Power Consumption | Less Than 3W |
| Temperature Measurement Accuracy | ±1 °C (-50 °C ~ 70 °C) |
| Resolution | 0.1 °C |
| Sensor Type | NTC Sensor (1 meter line length) |
| Ambient Temperature | 0°C to 60°C |
| Relative Humidity | 20% to 85% (non-condensing) |
| Machine Size | Approx. 75 x 34.5 x 85mm (3 x 1.4 x 3.3in) |
| Installation Opening | Approx. 71 x 29mm (2.8 x 1.1in) |
| Housing Material | ABS Flame Retardant Plastic |
| Item Weight | 4.8 ounces |
| Package Dimensions | 4.33 x 3.15 x 2.36 inches |
4. Setup and Installation
4.1 Physical Installation
The STC-1000 is designed for panel mounting. Cut an opening of approximately 71 x 29mm (2.8 x 1.1in) in your desired panel. Insert the controller into the opening and secure it using the provided clips or mounting mechanism.
4.2 Wiring Diagram
Important Safety Notes:
- Strictly distinguish the interface connection of the sensor and power supply.
- The sensor down-lead and power wire should be kept a proper distance apart to avoid interference.
- Ensure all connections are secure and correct before applying power.
Figure 3: Wiring diagram for the STC-1000. Connect power, sensor, heating, and cooling loads as shown.
Refer to Figure 3 for the correct wiring connections. The terminals are typically labeled as follows:
- Terminals 1 & 2: Power Supply (110-220VAC, 12V, or 24V depending on model).
- Terminals 3 & 4: Sensor Input.
- Terminals 5 & 6: Heating Output (Relay contacts for heating device).
- Terminals 7 & 8: Cooling Output (Relay contacts for cooling device).
Ensure the power supply voltage matches the controller's specified voltage (12V, 24V, or 110V-220VAC). Connect the heating and cooling devices to their respective relay outputs. The sensor should be placed in the environment where temperature needs to be controlled.
5. Operating Instructions
5.1 Power On/Off
Press the ⏻ (Power) button to turn the controller on or off.
5.2 Setting the Target Temperature
- Press the S button once. The digital display will show the current set temperature.
- To modify the set temperature, press and hold the S button for approximately 3 seconds. The displayed temperature will begin to flash.
- Use the ▲ (Up) or ▼ (Down) buttons to adjust the target temperature to your desired value.
- Press the S button again to confirm the new setting, or wait for 10 seconds for the setting to automatically save and exit the setting mode.
5.3 Accessing Advanced Parameters (P0-P6)
The STC-1000 has several advanced parameters for fine-tuning its operation. To access these:
- Press and hold the S button and the ▲ (Up) button simultaneously for approximately 3 seconds. The display will show 'P0'.
- Use the ▲ (Up) or ▼ (Down) buttons to navigate through parameters P0 to P6.
- Press the S button once to view the current value of the selected parameter.
- While viewing a parameter's value, press and hold the S button for 3 seconds. The value will flash. Use the ▲ (Up) or ▼ (Down) buttons to change the value.
- Press the S button again to confirm the new parameter value.
- To exit the advanced parameter settings, press the ⏻ (Power) button, or wait for 10 seconds for the system to automatically exit.
Common Parameters:
- P0: Refrigeration/Heating Mode (C=Cooling, H=Heating)
- P1: Hysteresis Setting (Temperature difference for switching)
- P2: Highest Set Temperature Limit
- P3: Lowest Set Temperature Limit
- P4: Temperature Correction
- P5: Delay Start Time (in minutes)
- P6: High Temperature Alarm (ON/OFF)
6. Maintenance
To ensure the longevity and accurate operation of your STC-1000 temperature controller, follow these maintenance guidelines:
- Cleaning: Periodically wipe the unit with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure no liquid enters the device.
- Sensor Care: Keep the temperature sensor clean and free from debris. Avoid bending or damaging the sensor cable.
- Environmental Conditions: Operate the controller within the specified ambient temperature and humidity ranges to prevent damage. Avoid exposure to direct sunlight, excessive dust, or corrosive environments.
- Connection Check: Regularly inspect all wiring connections to ensure they remain secure and free from corrosion.
7. Troubleshooting
If you encounter issues with your STC-1000 controller, refer to the following common problems and solutions:
- Display is blank:
- Check if the power supply is connected correctly and providing the specified voltage.
- Ensure the power button is pressed to turn the unit on.
- Temperature reading is inaccurate:
- Verify the sensor is properly connected to terminals 3 and 4.
- Check if the sensor cable is damaged.
- Ensure the sensor is placed correctly in the environment to be measured.
- Consider using the P4 (Temperature Correction) parameter to calibrate the reading if a known accurate thermometer is available.
- Heating/Cooling device not activating:
- Check the wiring connections for the heating/cooling device to terminals 5/6 or 7/8.
- Verify that the set temperature and hysteresis (P1) are configured correctly for the desired operation mode (P0).
- Ensure the heating/cooling device itself is functional.
- Display shows 'HHH' or 'LLL':
- 'HHH' typically indicates the measured temperature is above the maximum range or the sensor is open-circuited.
- 'LLL' typically indicates the measured temperature is below the minimum range or the sensor is short-circuited.
- Check the sensor and its connections.
If problems persist after attempting these troubleshooting steps, please contact customer support.
8. Warranty and Support
This product is manufactured by Fafeicy. For warranty information, technical support, or service inquiries, please refer to the product packaging or contact your retailer. Keep your purchase receipt as proof of purchase.