This is truouleshooting for Antminer controller & fan problems. Besides the suggestions in Tutorial: General Mining Guide & TroubleShoot for Antminer Models, here are some more troubleshooting ways.

 

Configuration page unaccessible

Possible causes and solutions:

• Mining software problem -> Reset. Instructions for resetting: https://www.eastshoremining.com/how-to-reset-antminer/
• Incompatible Internet browser -> Change a browser.
• IP address problem (one is static and another is dynamic) -> Set both as static. Instructions for finding the IP: https://www.eastshoremining.com/how-to-scan-out-the-configuration-ip-address-of-the-miner/
• MAC repeated (applicable for T9+、S9i) -> update firmware: https://www.eastshoremining.com/how-to-upgrade-the-firmware-for-a-bitcoin-miner/
• Problems caused by location change of the miner
  • Set the network of the new location as that of the old location.
  • Restore to factory settings.
  • Restart the miners.
• Control board problem -> Request for warranty repair.

 

IP address missing

Possible causes and solutions:

• Mining software problem -> Reset. Instructions for resetting: https://www.eastshoremining.com/how-to-reset-antminer/
• Router problem (DHCP is not activated)  -> Activate DHCP mode of the router.
• Ethernet cord problem -> Change the Ethernet cord.
• Couldn’t find the IP -> Instructions for finding the IP: https://www.eastshoremining.com/how-to-scan-out-the-configuration-ip-address-of-the-miner/
• Control board problems -> Request for warranty repair.

 

Fan undetected

Possible causes and solutions:

• The fan is not properly connected -> Reconnect the fan.
• Fan port on the control board damaged -> Request for warranty repair.
• Fan damaged -> Change the fan or request for warranty repair.

 

Hash boards undetected

Possible causes and solutions:

• Cable connection issue -> Power off the miner and reconnect the cable or change the cable.
• Port damaged -> Request warranty repair.
• Control board problem -> Request warranty repair.

 

Hash speed undetected

Possible causes and solutions:

• Pool issue -> Change to another pool.
• Fan issue -> Change the fan.
• Hash board damage -> Request for warranty repair.
• Control board issue -> Request for warranty repair.
• Network problem -> Check the network.

 

Indicator lights for Internet port not working

Possible causes and solutions:

• Ethernet cord issue -> Plug the Ethernet cord properly
• Control board issue -> Request for warranty repair
• Switch issue -> Check the switch

 

Spin speed of fans is too low (the speed difference of the 2 fans should be below 3000)

Possible causes and solutions:

• Change the fan, if it doesn’t help, request for warranty repair.

 

Kernel log page shows fan issue

Go to Kernel log page, search “error”, if it shows: Fatal Error: some Fan lost or Fan speed low.

Possible causes and solutions:

• Fan not connected properly -> Reconnect the fan.
• Fan port on the control board damaged -> Request warranty repair.
• Fan damaged -> Request warranty repair.

 

Third fan detected

Possible causes and solutions:

• Replace the two fans, see if the problem goes away.
• If both fans changed yet the problem persists, request for warranty repair.

 

Fan spin speed exceeds 7000

Possible causes and solutions:

• Replace the two fans, see if the problem goes away.
• If both fans changed yet the problem persists, request for warranty repair.

 

Further reading

Series of articles on troubleshooting for Antminer at EastShore:

• Troubleshooting in ANTMINER GENERAL MINING GUIDE: https://www.eastshoremining.com/tutorial-general-mining-guide-troubleshoot-for-antminer-models/
• Troubleshooting for Antminer – hashing board: https://www.eastshoremining.com/troubleshooting-for-antminer-hashing-board/
• Troubleshooting for Antminer – controller & fan: https://www.eastshoremining.com/troubleshooting-for-antminer-controller-fan/
• Troubleshooting for Antminer – Common External Problems: https://www.eastshoremining.com/troubleshooting-for-antminer-common-external-problems/
• Miner Virus Prevention and Solutions: https://www.eastshoremining.com/miner-virus-prevention-and-solutions/