The excavator ECU (scientific name controller) is called the "brain" that controls the machine. It plays a vital role in the normal operation of the excavator. The computer board is like our human brain. It will collect various sensors. The information is compared, calculated, processed and output, and the engine speed is controlled to coordinate with the hydraulic system action.

The most common cause of damage to the ECU is water ingress and mechanical impact. In addition, lightning strikes, electric welding surges, pin corrosion, internal component ablation, etc. can also cause damage to the 60100000 control unit. The usual practice of preventing electric welding surges is to disconnect the power supply of the whole machine, that is, to cut off the battery switch. Some manufacturers even require users to disconnect the EC210B ECU and the complete wiring harness before using the electric welding. The most common cause of stitch corrosion is the poor sealing performance of the large plug of the EC290B control unit, which leads to moisture intrusion, which may result in broken stitches or poor contact.

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