How to replace the Antminer DF1203812B2FN 7000RPM cooling fan?

The DF1203812B2FN 12V 4.5A 120mm cooling fan adopts dual ball bearings and supports PWM temperature-controlled speed regulation, achieving a maximum rotational speed of 7000RPM. It suits for Antminer series most miners that utilize 120mm chassis cooling fans, such as S19kPro, S21, S21pro, T21, KS5, etc.

The 4-pin square cooler fan has square 4-pin and 4-pin two specifications, which meet the needs of different miners. Specifically, the square 4-pin connector is suitable for models such as S21 series, T21, KS5 series, S19jxp, etc.; while the 4-pin connector is compatible with miners like KS3, X5, Z15Pro, S19 series, and others.

As a crucial component of the miner's cooling system, if the fan fails, it will directly impact heat dissipation efficiency, further influence mining performance, and may even damage other electronic components due to overheating. Regular checks and timely replacement of the damaged cooler fan are vital to promptly restore optimal operation status, minimize potential losses, and effectively extend equipment lifespan.

Taking the Antminer S19k Pro as an example, the specific replacing steps for the chassis fan are as follows:

1. Log in to the miner's backend management interface and identify the faulty cooling fan number based on the kernel log.

2. Shut down the miner and disconnect the power cord for safety. Wait a few minutes for the machine to cool down, avoiding burns during the operation.

3. Unplug the fan connector and remove the top protective cover plate to expose the control board.

4. Locate the fan interfaces on the control board, confirm the position of the faulty fan based on the number, then remove its fixing screws, and take it off along with the protective net.

5. Ensure the new DF1203812B2FN fan is visually intact and verify that its plug fully matches the interface on the control board (S19k pro uses a 4-pin connector).

6. Align the fan with the screw holes and secure it, along with its protective net.

7. Install the protective cover plate, after that connect the fan plug to the corresponding interface, ensuring a secure connection.

8. Power on the miner to observe the operation of the new fan.

Replacing the DF1203812B2FN cooling fan will bring more stable and efficient heat dissipation for machines, helping miners achieve better results in the cryptocurrency mining field!