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PSU_FAN_ERR Warning

Antminer – APW PSU Fan Failure

PSU fan stopped

Warning — Should be addressed soon

Affected Models: APW3++, APW7, APW9, APW12

Symptoms

  • PSU overheating
  • PSU fan not spinning
  • PSU shuts down from thermal protection

Step-by-Step Fix

1

Power off and check if the PSU fan is physically obstructed.

2

Clean dust from the PSU fan and vents.

3

If fan does not spin after cleaning, the fan motor has failed.

4

APW PSU fans can be replaced but require opening the PSU enclosure. This involves high-voltage components.

5

For safety, consider replacing the entire PSU rather than just the fan.

When to Seek Professional Repair

If the steps above do not resolve the issue, or if you are not comfortable performing these repairs yourself, professional service is recommended. Attempting advanced repairs without proper equipment can cause further damage.

Related Error Codes

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