1. Introduction
The Elitech STC-1000HX is a versatile digital temperature controller designed for precise temperature management in various applications. It features a large display, switchable Fahrenheit and Celsius units, and two relay outputs for controlling both heating and cooling devices. This manual provides detailed instructions for installation, setup, operation, and maintenance to ensure optimal performance and longevity of your device.
Key Features:
- Wide temperature measurement and control range.
- Fahrenheit (℉) and Celsius (℃) switchable display.
- Two relay outputs for independent control of heating and cooling.
- Large, clear digital display for easy readability.
- Waterproof NTC sensor for reliable temperature detection.
- Sensor failure alarm function.
Image 1.1: Front view of the Elitech STC-1000HX Digital Temperature Controller, showing the digital display and control buttons.
2. Important Safety Information
Please read and understand all safety instructions before installing or operating the STC-1000HX. Failure to follow these instructions may result in electric shock, fire, or damage to the device.
- Ensure the power supply voltage matches the controller's requirements (220V).
- All wiring should be performed by a qualified electrician or knowledgeable individual.
- Disconnect power before performing any wiring or maintenance.
- Do not operate the controller in environments with excessive moisture or corrosive gases.
- Ensure proper grounding to prevent electrical hazards.
- Keep the device away from children.
3. Product Overview and Components
3.1 Product Dimensions and Display
The STC-1000HX features a compact design with a large, easy-to-read LED display. The front panel includes buttons for power, settings, and navigation.
Image 3.1: Elitech STC-1000HX showing key dimensions (71mm width, 66mm depth, 29mm height) and icons for cooling, heating, temperature unit selection, and sensor failure alarm.
3.2 Included Components
The standard package includes:
- 1 x Elitech STC-1000HX Digital Temperature Controller
- 1 x NTC Waterproof Temperature Sensor (6.6 feet / IP67 rated)
- 1 x User Manual
Image 3.2: The waterproof NTC temperature sensor, rated IP67, with a 6.6-foot cable, designed for accurate and reliable temperature measurement in various environments.
4. Installation Guide
4.1 Wiring Diagram
Carefully follow the wiring diagram below. Ensure all connections are secure and correctly matched to avoid damage to the controller or connected devices. Disconnect power before wiring.
Image 4.1: Wiring diagram for the STC-1000HX. Terminals 1 & 2 are for Cooling (10A/110VAC), 3 & 4 for Heating (10A/110VAC), 5 & 6 for the Temperature Sensor, and 7 & 8 for Power Supply (110VAC).
Wiring Instructions:
- Connect the main power supply (110V AC) to terminals 7 (Neutral) and 8 (Live).
- Connect the cooling device to terminals 1 (Neutral) and 2 (Live).
- Connect the heating device to terminals 3 (Neutral) and 4 (Live).
- Connect the NTC temperature sensor to terminals 5 and 6. The sensor is non-polar, so connection order does not matter.
4.2 Mounting
The STC-1000HX is designed for panel mounting. Ensure the cutout dimensions match the controller's size for a secure fit. Allow adequate ventilation around the unit.
5. Setup and Configuration
5.1 Power On/Off
Press and hold the Power button (
) for 3 seconds to turn the controller ON or OFF.
5.2 Setting Temperature Parameters
To enter the parameter setting mode, press and hold the Set button () for 3 seconds. Use the Up () and Down () buttons to navigate through parameters and adjust values. Press the Set button again to confirm and exit.
Common Parameters:
- SP (Setpoint): The desired temperature.
- HD (Heating Differential): The temperature difference above the setpoint before heating activates.
- CD (Cooling Differential): The temperature difference below the setpoint before cooling activates.
- PT (Compressor Delay): Delay time for compressor protection.
- CF (Temperature Unit): Switch between Celsius (℃) and Fahrenheit (℉).
6. Operating Instructions
6.1 Cooling Mode Operation
When the measured temperature exceeds the setpoint plus the cooling differential, the cooling relay will activate, turning on the connected cooling device. The cooling relay will deactivate when the temperature drops to the setpoint.
6.2 Heating Mode Operation
When the measured temperature falls below the setpoint minus the heating differential, the heating relay will activate, turning on the connected heating device. The heating relay will deactivate when the temperature rises to the setpoint.
Image 6.1: The STC-1000HX supports both cooling and heating functions, each with a 10A relay capacity, indicated by snowflake and sun icons respectively.
6.3 Alarm Functions
The controller includes a sensor failure alarm. If the sensor circuit is open or short-circuited, the display will show an error code (e.g., 'EE') and an audible alarm may sound. Replace the sensor if this occurs.
7. Menu Parameter Settings
To access and modify the advanced parameters, press and hold the Set button for 3 seconds. Use the Up/Down buttons to navigate and adjust values.
| Function | Set Range | Default | Description |
|---|---|---|---|
| SP | -50℃ ~ 120℃ (-58℉ ~ 248℉) | 10℃ (50℉) | Temperature Setpoint |
| HD | 0.1℃ ~ 10.0℃ (0.2℉ ~ 18.0℉) | 2.0℃ (3.6℉) | Heating Differential |
| CD | 0.1℃ ~ 10.0℃ (0.2℉ ~ 18.0℉) | 2.0℃ (3.6℉) | Cooling Differential |
| PT | 0 ~ 10 minutes | 3 minutes | Compressor Delay Time |
| CF | C/F | C | Temperature Unit (Celsius/Fahrenheit) |
8. Troubleshooting Guide
Refer to the table below for common issues and their potential solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Display shows 'EE' | Sensor error (open circuit or short circuit) | Check sensor wiring. Replace sensor if damaged. |
| Controller not powering on | No power supply or incorrect wiring | Verify power connections to terminals 7 and 8. Check fuse if applicable. |
| Heating/Cooling not activating | Incorrect setpoint/differential, compressor delay active, faulty relay, or device | Check SP, HD, CD, and PT settings. Wait for compressor delay. Test connected heating/cooling device. Check wiring to terminals 1-4. |
| Temperature reading inaccurate | Sensor placement, damaged sensor, or calibration issue | Ensure sensor is correctly placed and not exposed to direct heat/cold. Replace sensor if damaged. |
9. Technical Specifications
- Model: STC-1000HX
- Power Supply: 110V AC, 50/60Hz
- Temperature Measurement Range: -50℃ to 120℃ (-58℉ to 248℉)
- Temperature Control Range: -50℃ to 120℃ (-58℉ to 248℉)
- Resolution: 0.1℃ / 0.1℉
- Accuracy: ±1℃ (±2℉)
- Sensor: NTC sensor (1PC)
- Relay Output: 2 Relays (Cooling 10A/110VAC, Heating 10A/110VAC)
- Power Consumption: <3W
- Operating Temperature: -10℃ to 60℃ (14℉ to 140℉)
- Storage Temperature: -20℃ to 75℃ (-4℉ to 167℉)
- Relative Humidity: 20% to 85% (non-condensing)
- Front Panel Size: 71mm x 29mm
- Product Dimensions (LxWxH): 7.1 x 6.6 x 2.9 cm
- Item Weight: 200 g
10. Maintenance
To ensure the longevity and accurate operation of your STC-1000HX controller, follow these maintenance guidelines:
- Cleaning: Gently wipe the controller's display and casing with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Sensor Care: Periodically inspect the NTC sensor for any signs of damage or corrosion. Ensure it is clean and free from debris that could affect temperature readings.
- Environmental Conditions: Operate the controller within the specified temperature and humidity ranges to prevent damage.
11. Warranty and Support
11.1 Warranty Information
Elitech products are covered by a limited warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Elitech website.
11.2 Customer Support
If you encounter any issues or have questions regarding your Elitech STC-1000HX temperature controller, please contact Elitech customer support through their official website or the contact information provided in your product packaging.
