What is the Avalonminer HA1250H12SB-Z cooling fan and how to replace It?

The HA1250H12SB-Z 12V 9.0A cooling fan is suitable for Avalon 1346, 1366, and 1566 miners. This violent fan features a dual-fan interface, with each fan equipped with two fan connectors. It has a size of 120x120x50mm and an input of 12V/9A, effectively assisting miners in dissipating heat efficiently.

If the Avalon miner's cooling fan exhibits issues such as reduced speed or malfunction, abnormal heat generation, increased noise, or a decrease in hash rate, it may indicate a fan failure. Timely replacement of the cooling fan is necessary to prevent overheating of internal components, which can lead to miner shutdown or even more severe accidents such as burnout.

Please refer to the following steps to replace a damaged cooling fan:

1. If "Fan1 [0] Fan2 [0]" appears in the miner's kernel log, it indicates that two fans have failed. Find the faulty cooling fan and disconnect the power to the miner.

2. Unscrew the fixing screws of the faulty fan's protective grille, disconnect the fan's wiring from the miner's control board, and remove the faulty cooling fan.

3. Before installation, ensure that the dimensions, connectors, and other specifications of the new fan match the miner. Install the new fan in its original position, secure the fan and protective grille with screws, and plug the fan's connector into the control board's interface.

4. Reconnect the Avalon power supply, restart the miner, and check the operation of the new fan and whether the operating temperature has returned to normal.

Replacing a good HA1250H12SB-Z cooling fan can help the miner cool down quickly and make its performance more stable. If any fault is detected, please replace it promptly to maintain the Avalon miner's ability to continuously generate profits.