LG washing machine, LG washing machine repair and inspection rotates continuously in one direction when detecting the amount of cloth. Fault analysis: According to the fault phenomenon analysis, there may be a fault in the water level control section. Data source: Beijing LG Washing Machine After-sales Service Phone http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3446020.
Fault inspection: First, check whether the signal line from the computer board to the water level sensor is open circuit. If the line is normal, then measure whether the internal inductive coil of the water level sensor is open circuit. The inspection result shows that both the signal line and the internal inductive coil of the water level sensor are normal.
Due to the computer board failure or because the LC oscillation circuit is not working, it will cause the motor to rotate continuously in one direction when detecting the amount of cloth at startup. After trying to replace the computer board and conducting a power-on test, the washing machine works normally, and the fault is resolved.