LG WM3455H Series, Service Manual

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29
NO
Are the resistance of the Hall Sensor 5~15k Ω ?
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.
Is the Connector connected correctly to
the Main PCB and the Motor ?
Or is the Harness alright ?
YES
NO
YES
YES
YES
YES
NO
Disassemble the Rotor .
Are the Magnet of rotor cracked or broken ?
• Ha ~ Common
: 5 ~ 15 k Ω
• Hb ~ Common
: 5 ~ 15 k Ω
Replace the Main PCB .
Press the Power button & Start / Pause button.
Does the Drum stop when the start/pause button is pressed to start the cycle ?
Or Sometimes does the Drum rotate weakly (under 15rpm)?
Magnet
Ha
Hb
Common
Are the resistance same
between
Stator points?
V~U / U~W / W~V : 8~11 Ω
V U W
V U W
Reconnect or repair the Connector .
Or replace the Harness .
Replace the Rotor .
Replace the Hall Sensor .
Disassemble
hall sensor carefully.
(Next page)
NO
Replace the Stator .