DC 12V PWM Fan Speed Controller Instruction Manual

1. Product Overview

This DC 12V PWM Fan Speed Controller is designed for computer CPU cooler fans, offering precise temperature control and speed regulation. It supports 4-wire fans and features various operating modes including temperature control and alarm functions.

2. Specifications

This controller is designed for manual control and automatic temperature control.

3. Setup and Wiring

Careful wiring is essential for proper function. Refer to the diagrams below for connection details.

3.1. Power and Fan Connections

• Input Power: The red and black wires are for +12V positive and negative power supply, respectively.
• Three-wire Connector: Equipped with a 2510-3P plug for some motherboards.
• Four-wire Fan: The fan connector is for speed detection.
• Temperature Probe: Connect the temperature probe (short head or ring probe) to the NTC terminals.

3.2. Wiring Diagram and Indicators

The module features three indicator lights (1, 2, 3) and a button for configuration. The image below illustrates the connections and the meaning of the indicator lights in different modes.

Indicator Light Patterns:

1. When the temperature probe is not installed, it is purely manual control. Double-click (double-click speed is not too fast) to raise or lower the gear by 5%. When changing the value, the configuration will be automatically stored when it continues to run for 20 seconds. Within 20 seconds, the No. 2 indicator will flash rapidly. When the flash stops, it means the gear position has been stored. No. 1 indicator light is always on in the position of no further increase/no further decrease.
2. After the temperature probe is installed, the mode of manual speed regulation is the initial low speed (baseline speed). When the temperature exceeds the acceleration temperature, the fan speed accelerates smoothly with the increase of the temperature. The parameters of acceleration temperature and acceleration width can be set in the setting diagram below. In the figure, the numbers 1, 2 and 3 represent the states of on (red) and off (white) indicator lights on the board, which are displayed in binary digits.

4. Operating Instructions

4.1. Normal Operation

• Increase Speed: Click the bottom line output of the button to increase speed by 5%.
• Decrease Speed: Double-click the bottom line output of the button to decrease speed by 5%.
• Save Parameters: Run for 20 seconds after changing the value, and save the parameters after braking when the middle indicator stops flashing.
• Enter Temperature Control Setting: Long press the button.

4.2. Temperature Control Setting State

• Acceleration Temperature Setting (slow flash): Double click and double click to set up and down values respectively. Long press to enter acceleration width setting.
• Acceleration Width Setting (flash): Double click to change the value, then long press to save and exit temperature setting.
• Exit: In the setting state, if there is no operation in 20 seconds, the setting will automatically exit and no parameters will be saved.

4.3. Set Instance (Example)

If the bottom line is 20%, the acceleration temperature is 35°C, and the acceleration width is 15°C:

When the probe temperature is lower than 35°C, the output signal is always 20%. When the probe temperature exceeds 35°C, the controller smoothly increases the output signal according to the temperature rise, and the fan accelerates. When the probe temperature reaches or exceeds 50°C (35 + 15), the controller outputs the signal at full speed. The fan will be at full speed. Specific to the actual speed of the fan, there will be a little difference according to the specific performance of the non-ventilating fan.

The controller also supports the control of reverse timing fans.

4.4. Specific Setting Method

First, power off the fan controller. Hold down the setting button to power on the controller, and keep the setting button held (about 3 seconds) until the three lights become double flashing state. At the same time, release the button, and the indicator light becomes single double flashing state. This is the mode setting state. The controller is divided into three working modes, corresponding to the No. 1, 2, and 3 indicator lights flashing double. It can be switched by short pressing the key. After setting, long pressing the key can save and exit the setting mode and automatically return to normal working state.

The three working modes are as follows:

1. Regular PWM fan control mode (default mode): For standard Intel specification four-wire fan control.
2. Conventional reverse timing PWM fan control mode: Used for most reverse timing four-wire fan control. These fans in the normal mode control speed change opposite, and the control line is connected to the negative electrode at full speed.
3. Inverse timing fan 80% control mode: Used for a very rare reverse timing fan. This fan in the conventional mode control speed change is opposite, and the control line is connected to the negative electrode does not rotate.

5. Maintenance

The Quason PWM Fan Speed Controller is designed for durability and requires minimal maintenance. Keep the module clean and free from dust and moisture. Ensure all connections are secure to prevent intermittent operation.

• Regularly check for dust accumulation on the module and clean gently with a soft, dry brush if necessary.
• Avoid exposing the module to extreme temperatures or humidity outside its specified operating range (-40°C to +85°C).
• Do not attempt to modify the circuit board, as this may damage the device and void any potential support.

6. Troubleshooting

If you encounter issues with your PWM Fan Speed Controller, consider the following common troubleshooting steps:

• Fan not spinning:
  • Check if the power supply (DC 12V) is correctly connected and providing adequate voltage.
  • Ensure the fan is properly connected to the 2510-4P interface.
  • Verify the fan's current draw does not exceed 3A. If it does, ensure a separate power cord is used for the fan.
  • Confirm the selected operating mode is appropriate for your fan type (regular, conventional reverse timing, or inverse timing 80%).
• Incorrect fan speed:
  • Check the temperature probe connection. A loose or faulty probe can lead to inaccurate temperature readings and incorrect fan speed.
  • Review the temperature control settings (acceleration temperature, acceleration width) to ensure they match your desired behavior.
  • If in manual mode, ensure the speed setting is correctly adjusted.
• Indicator lights not behaving as expected:
  • Refer to the "Indicator Light Patterns" in Section 3.2 to understand the meaning of different light states.
  • If the module is unresponsive, try powering it off and on again.

For persistent issues, contact Quason Official Store support for assistance.

7. User Tips

While no specific user reviews or Q&A were provided, here are some general tips for optimizing your experience with the PWM Fan Speed Controller:

• Test Connections: Before final installation, test all connections to ensure the fan spins and responds to temperature changes as expected.
• Probe Placement: For accurate temperature control, place the temperature probe as close as possible to the heat source (e.g., CPU heatsink) without obstructing airflow.
• Customization: Experiment with the acceleration temperature and width settings to find the optimal balance between cooling performance and noise levels for your specific setup.
• Fan Compatibility: Ensure your fan is a 4-wire PWM fan for full functionality. While some 3-wire fans might work, PWM control is designed for 4-wire fans.

8. Warranty and Support

This product is manufactured by Quason. For any technical support, warranty claims, or inquiries, please contact the Quason Official Store where the product was purchased. Keep your purchase records for reference.

Please note that unauthorized modifications or improper use may void the product's warranty.