Le (Motor Lock Error) - LG F1 20TD Series Service Manual

Motor Locked Error (LE)
[Pre Check]
• Gentle wash cycles, such as Perm Press, Delicates, Hand Wash, and Wool/Silk should only be used for smaller loads.
Because these cycles are more gentle in tumbling and spinning, putting too much in the drum can register an issue
with the motor. Remove items, reset unit and test with a Rinse/Spin cycle.
• Don't replace the PCB, when the hall sensor is replaced.
Replace the PCB, when the LE is displayed after replacing the hall sensor.
Press the Power button &
Does the Drum stop when the start/pause button is pressed to start the cycle ?
Or Sometimes does the
Is the Connector connected correctly to
the Main PCB and the Motor?
Or is the Harness alright ?
Disassemble the Rotor.
Are the Magnet of rotor cracked or broken?
Are the resistance of the
Are the resistance same
between Stator points?
V~U / U~W / W~V : 8~11Ω
Replace the Main PCB.
Start / Pause button.
Drum rotate weakly (under 15rpm)?
YES
YES
Magnet
NO
Hall Sensor 5~15kΩ?
Hb
• Ha ~ Common
: 5 ~ 15 kΩ
• Hb ~ Common
: 5 ~ 15 kΩ
Common
Ha
YES
V U W
YES
NO
YES
NO
NO
V U W
29
Reconnect or repair the Connector.
Or replace the Harness.
Replace the Rotor.
Replace the Hall Sensor.
Disassemble
hall sensor carefully.
(Next page)
Replace the Stator.