1. Product Overview
The Irfora Mini Temperature Controller 3230 is a versatile digital thermostat module designed for precise temperature management. It supports both heating and cooling modes, making it suitable for a wide range of applications including domestic freezers, water tanks, refrigerators, industrial chillers, steamers, and other temperature-controlled systems.
Key features include:
- Miniature design for easy integration and operation.
- Large and clear LED display for enhanced readability of actual and set temperatures.
- Wide temperature measuring range.
- Ability to switch between cooling and heating control modes.
- Equipped with a reliable relay output.
Image 1: The Irfora Mini Temperature Controller 3230 shown with its included NTC10K waterproof sensor probe.
2. Setup and Installation
Before installation, ensure the power supply is disconnected. This device requires careful wiring according to the chosen voltage (12V, 24V, or 110-220VAC).
2.1 Wiring Connections
The controller has terminals for power input (VCC, GND) and relay output for the load. Refer to the product's back label for correct wiring based on your power supply.
Image 2: Rear view of the controller showing the terminal block and the 1-meter NTC10K probe line. The back label provides wiring details.
2.1.1 12V/24V DC Connection Method
For 12V or 24V DC power supplies, connect the positive terminal of your system power to the VCC terminal on the controller. Connect the negative terminal of your system power to the GND terminal. The load (heating or cooling device) should be connected to the relay output terminals, ensuring proper polarity if applicable to your load. Always consult the wiring diagram printed on the back of the device or in the full manufacturer's manual for precise connections.
2.1.2 110V/220V AC Connection Method
For 110V or 220V AC power supplies, connect the live wire (Firewire) and neutral wire (Null line) to the appropriate input terminals as indicated on the device or in the diagram below. The load is connected in series with the relay output. Exercise extreme caution when working with AC voltages.
Image 3: Wiring diagram for 110V/220V AC power input. Ensure correct connection of live (Firewire) and neutral (Null line) to the controller and load.
2.2 Sensor Installation
Connect the NTC10K waterproof sensor probe to the designated sensor input on the controller. Place the sensor in the environment where temperature measurement and control are required. Ensure the sensor cable is not damaged or exposed to excessive strain.
3. Operating Instructions
The controller features a digital display and several buttons for easy operation.
Image 4: Front panel of the controller with labeled display elements and control buttons.
3.1 Display Elements
- PV (Process Value): Displays the actual measured temperature.
- SV (Set Value): Displays the target temperature or setpoint.
- OUT Indicator: Illuminates when the relay output is active (heating or cooling is engaged).
3.2 Control Buttons
- SET Button: Used to enter the setting mode for parameters.
- Up (▲) Button: Increases values or navigates through menu options.
- Down (▼) Button: Decreases values or navigates through menu options.
- Restart Button: Resets the controller or confirms settings (functionality may vary, refer to specific model documentation if available).
3.3 Setting the Temperature
- Press the SET button once. The SV display will start flashing.
- Use the Up (▲) and Down (▼) buttons to adjust the desired target temperature.
- Press the SET button again to confirm the setting and exit the setting mode. The SV display will stop flashing.
3.4 Switching Between Heating and Cooling Modes
The controller automatically determines whether to operate in heating or cooling mode based on the set temperature and the actual temperature, along with internal hysteresis settings. For advanced parameter settings (e.g., hysteresis, calibration), consult the full manufacturer's manual if available. Typically, a long press of the SET button might access advanced settings.
4. Maintenance
To ensure the longevity and accurate performance of your Irfora Mini Temperature Controller 3230, follow these maintenance guidelines:
- Cleaning: Gently wipe the display and casing with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or excessive moisture, which can damage the electronic components.
- Environmental Conditions: Operate the controller within the specified environmental requirements (-10-60℃, humidity 20%-75%RH) to prevent damage. Avoid direct sunlight, extreme temperatures, and high humidity.
- Sensor Care: Ensure the sensor probe and its cable are free from damage. Do not bend the cable sharply or expose it to corrosive substances.
- Connections: Periodically check all wiring connections to ensure they are secure and free from corrosion.
5. Troubleshooting
If you encounter issues with your temperature controller, consider the following common troubleshooting steps:
- No Power/Display Off:
- Check the power supply connection to the VCC and GND terminals.
- Verify that the power source (12V, 24V, or 110-220VAC) is active and providing the correct voltage.
- Inspect the power cable for any damage.
- Incorrect Temperature Reading:
- Ensure the NTC10K sensor probe is correctly connected to the controller.
- Check the sensor cable for any cuts, pinches, or damage.
- Verify the sensor is properly placed in the environment to be measured.
- If the reading is consistently off, the sensor might need calibration (refer to advanced settings if available) or replacement.
- Load Not Activating (Heating/Cooling Not Working):
- Check if the "OUT" indicator light is on when the load should be active.
- Verify the wiring connections to the load and the relay output terminals.
- Ensure the set temperature (SV) and actual temperature (PV) are configured correctly for the desired heating or cooling action.
- Test the load device independently to confirm it is functional.
- Display Flashing/Error Codes:
- If the display shows unusual characters or flashes, it might indicate a sensor error or a system fault. Disconnect power, wait a few seconds, and reconnect.
- Consult the manufacturer's specific error code documentation if available.
If these steps do not resolve the issue, contact the seller or manufacturer for further assistance.
6. Specifications
| Feature | Specification |
|---|---|
| Item Type | Temperature Controller |
| Power Supply Options | 12V, 24V, 110-220VAC (Optional) |
| Temperature Measuring Range | -50℃ ~ 99℃ |
| Resolution | 0.1℃ (-9.9℃ ~ 99.9℃) |
| Accuracy | 1℃ |
| Sensor Type | NTC10K Waterproof sensor |
| Environmental Requirements | -10-60℃, humidity 20%-75%RH |
| Refresh Rate | Approximately 0.5 seconds |
| Dimensions | 79mm * 43mm (3.11 x 1.69 inches) |
| Cutting Size | 76mm * 39mm (2.99 x 1.53 inches) |
| Package Weight | 49g / 1.72 ounces |
7. Warranty and Support
Specific warranty terms and conditions for the Irfora Mini Temperature Controller 3230 are typically provided by the retailer or manufacturer at the time of purchase. Please retain your proof of purchase for any warranty claims.
For technical support, troubleshooting assistance beyond this manual, or warranty inquiries, please contact the seller from whom you purchased the product. You may also visit the official Irfora website for additional resources if available.
