For Bitmain Antminer S19 Bitcoin miners, this guide will cover common issues and solutions.
1. Overview
- Kernel Log: It keeps track of ANTMINER’s operational phases and can be used to troubleshoot some frequent problems.
- The method to enter the miner log: enter the miner IP address in the address bar of Google or Firefox browser >> enter the user name/password (default root/root) >> the miner log
- There are two types of logs: current logs, which only keep track of the current log at the time the miner is running; and historical logs, which keep track of all the logs the miner has ever produced, but only keep the most recent if the older ones go over a certain threshold. Check the current log when the miner is in a fault state. The historical log should be queried if the miner is acting normally.
2. Common Fault Phenomena and Solutions
The mining machines in the Antminer S19 series that have the following fault examples; other Antminer models are only used as examples.
2.1 the Fan is Abnormal
When the fan is lost or the fan speed is low, ERROR_FAN_LOST will appear in the miner log as follows:
Solution
a. Make sure the fan connector is fully inserted into the socket and that the fan cable is free from damage. (Below pictures are bad socket and bad cable examples)
b. To test, replace with a reliable fan. Replace the control board if it doesn’t resolve the issue.
c. Put the miner’s settings back to the default state.
d. Bring the miner back to us for maintenance.
2.2 PIC is Abnormal
When the following error message “fail to read pic temp” appears in the log, it means that the PIC is abnormal.
Solution
The operating room board is unusual generally. Cross-check the cables first. Upgrade the firmware or try a card swipe. It is suggested that you send it back for repair if the issue cannot be fixed.
2.3 Missing Chips/missing Hashboards
Check the log; if the following information “Chain 0 only find 0 chain, will power off hash board 0” is shown, the hash board either has few chips or has not yet detected it.
Solution
a. Chips missing? Replace the PSU and check that the miner is securely grounded.
b. Make sure the cables are in place and in good condition if the hashboard is missing.
2.4 Network Failure
The log shows “ERROR NET LOST”.
Solution
Examine the network cable interface for looseness and the network delay to see if it is normal.
2.5 Power Failure
The log shows “ERROR_POWER_LOST”.
Solution
Replace the power supply after ensuring that the conductive copper bar is making good contact and that the power control wire is not frayed or otherwise compromised.
2.6 Overtemp Protection
It is simple to activate the miner’s high temperature protection mechanism when the ambient temperature is too high. The S19 miner’s operating temperature is too high if the following information “ERROR TEMP TOO HIGH” appears in the log.
Solution
a. Verify that no foreign objects, such as dust, catkins, insects, or other debris, are adhering to the hash board’s heat sink. The hash board must be cleaned and cooled before the miner is turned on because dust buildup will result in poor heat dissipation.
b. Check to see if the miner’s intake air temperature is too high, and make sure the exhaust air is smooth.
c. Assure that the miner operates within the normal temperature range while lowering the inlet air temperature. 5 to 35 degrees Celsius is the suggested operating temperature.
Please feel free to get in touch with us if you have any questions so we can help.
