Troubleshooting for Bitmain Antminer S19 Series Fans Problems


We sum up the following situations in which Bitmain Antminer S19 Series fans might malfunction.

Scenario No.1——the Fan Speed is Too Low

Troubleshooting for Fans Problems

Cause analysis and treatment methods
1. replace the corresponding position of the fan, test whether the fan is damaged, if the fan is damaged, you need to replace the fan.
2. Replace the control board if necessary or send the device back to the manufacturer for repair if the issue persists after the fan has been replaced.

Scenario No.2——the Fan Speed Exceeds 10000

Troubleshooting for Fans Problems

Cause analysis and treatment methods
1. Damage to a fan should be repaired at the factory, or the fan should be replaced.

Scenario No.3——fans Are Missing in the Miner Status

Fatal Error: Some Fan Lost or Fan Speed Low!

Troubleshooting for Fans Problems

Here is the video to teach you how to copy Kernel Log into text form.

Cause analysis and processing methods
1. check the interface or log can detect the fan If you know which fan has stopped working by its number, you can locate it. Then, if it has been physically damaged, you can replace the fan and examine the appearance of the connection line.
2. check whether the control board connected to the fan port is damaged, if damaged, the control board can be replaced or returned to the factory for repair.
3. test whether the fan is damaged, if damaged, replace the fan.

Scenario No.4——more Than a Normal Amount of Fans Are Detected

There should be two fans visible in the miner status, but there are usually three or more.

If you encounter any one of the above scenarios, please follow the troubleshooting steps as below,

  1. Each fan should be replaced in turn, and each time, check to see if the display returns to normal.
  2. If the fan is replaced but still displays three fans, the control board is damaged and needs to be taken back to the manufacturer for service.

Please feel free to get in touch with us if you have any questions so we can help.

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