How to fix “Temp too high” on Bitmain Antminer S19 Pro ASICs

This troubleshooting guide provides a step-by-step approach to fixing the “Temp too high” error on Bitmain Antminer S19 Pro ASICs. The Bitmain Antminer S19 Pro is a popular ASIC miner used for mining cryptocurrencies such as Bitcoin, and it’s critical to maintain its temperature within the recommended limits to ensure its proper functioning. Suppose you’re facing the “Temp too high” error on your Antminer S19 Pro. In that case, it could be due to various factors such as a malfunctioning temperature sensor chip, a faulty cooling system, or physical damage. This guide will walk you through the steps to identify the root cause of the issue and provide solutions to fix it. However, it’s essential to note that troubleshooting hardware issues can be complex, and it’s recommended to seek professional assistance if you’re not familiar with working with electronics. Additionally, follow safety precautions when working with electronics and high temperatures.

Common causes of high temperature on Antminer S19 Pro

  • Poor ventilation: If the airflow around the Antminer is blocked or insufficient, it will cause the heat to accumulate and raise the temperature. To prevent or fix this, make sure there is enough space between the Antminer and other objects, and use fans or air conditioners to improve the ventilation.
  • Dust accumulation: If the Antminer is not cleaned regularly, dust will build up on the hash board, affecting heat dissipation. To prevent or fix this, use a soft brush or compressed air to remove the dust from the Antminer every month or more frequently depending on the environment.
  • Faulty fans: If the fans of the Antminer are damaged or malfunctioning, they will not be able to cool down the Antminer effectively. To prevent or fix this, regularly check the fan speed and noise, and replace any faulty fans as soon as possible.
  • High ambient temperature: If the room where the Antminer is located is too hot, it will increase the intake air temperature of the Antminer and trigger its high-temperature protection mode. To prevent or fix this, try to keep the room temperature between 10°C and 25°C by using air conditioners or other cooling devices.

Troubleshooting Steps to fix “Temp too high” on Bitmain Antminer S19 Pro ASICs

  1. Check the kernel log of your Antminer S19 Pro ASIC for any error messages related to high temperatures, such as “ERROR_TEMP_TOO_HIGH: over max temp” or “stop_mining: over max temp.” If you see any such messages, the temperature of one or more components is likely exceeding the recommended limits.
    1. Power up the Antminer and wait for lights to start flashing.
    2. Log into your router and look for the Antminer in the list of connected devices. You can also use a free network scanning tool like IPReporter to find the IP address of the Antminer.
    3. Once you have located the Antminer’s IP address, enter it into a supported browser such as Chrome or Firefox.
    4. You will be prompted to enter your username and password. The default username and password are both “root”.
    5. After logging in, you will be able to access Antminer’s user interface where you can configure various settings such as network, pool, and fan speed.
    6. To check the kernel log for error messages, navigate to System > Upgrade > Kernel Log in the Antminer’s user interface. Here, you will find a list of messages that show the status of your Antminer and any problems it may have encountered.
  2. Make sure that the cooling system of your Antminer S19 Pro ASIC is working properly. Check if the fans are spinning and the air intake and exhaust areas are clear of any obstructions. If the cooling system is not working as expected, it can cause the temperature to rise.
  3. Inspect the Antminer S19 Pro ASIC for any physical damage such as broken or damaged heatsinks, fans or other components. If any components are damaged, they may need to be replaced.
  4. Make sure that the ambient temperature in the room where the Antminer S19 Pro ASIC is located is not too high. High ambient temperatures can make it difficult for the cooling system to dissipate heat, resulting in higher temperatures.
  5. Swap the data cable of the problematic hashboard with that of a normal hashboard to eliminate the problem of the cable and the Antminer S19 control board.
  6. If the above steps do not solve the problem, the temperature sensor chip may be the culprit. Check the voltage and resistance of the temperature sensor chip and compare it with that of other hashboards of the same type or good hashboards. If the temperature sensor chip is not functioning correctly, it may need to be replaced.
  7. If the temperature sensor chip is functioning correctly, the chip through which the temperature sensor circuit will pass through may be abnormal. Test the chip using a multimeter and compare the data with that of a standard chip. If an abnormality is found, replace the abnormal chip.

Trust Your Antminer S19 Pro Repairs to the Experts at D-Central

In conclusion, troubleshooting and fixing the “Temp too high” error on your Bitmain Antminer S19 Pro ASIC can be a challenging task that requires technical knowledge and experience. However, by following the step-by-step troubleshooting guide provided, you can identify the root cause of the issue and apply the appropriate solution to fix it. If you are not familiar with working with electronics or unable to resolve the issue using the steps provided, it is recommended to seek professional assistance. At D-Central, we offer quick and professional ASIC repair services to ensure your Antminer S19 Pro ASIC is running at optimal temperature and efficiency. It’s important to note that operating the Antminer at high temperatures can cause serious problems, such as reduced performance, increased power consumption, shortened lifespan, and even damage to the machine. Therefore, monitoring the temperature regularly and keeping it within a normal range is crucial. If you notice any signs of high temperature, immediate action should be taken to lower the temperature, such as improving ventilation, cleaning dust, replacing fans, or moving to a cooler location.

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