WF-95TB - LG Washing Machine Service Manual (repair manual). Page 54

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53
8) Water drains though it is not the time of drain.
Where, what & how to check?
Result of Check
Possible Cause How to repair & settle
Drain Motor
(for Non-Pump Model only)
1. Check whether the drain motor is 
normally returned after turning 
power off.
(It is considered normal if the lever 
of the drain motor is fully pulled out 
by the PV spring)
PV Case
1. If water drains though the drain 
motor is normally returned, check 
whether PV asm is blocked by 
foreign objects or the bellows in 
the PV asm is deformed.
Controller
1. Check whether the drain motor or 
the drain pump works immediately
after power is turned on.
Blocked.
Blocked.
Bellows
deformed.
Works. 
Defect of the drain
motor.
Defect of PV 
Bellows.
Defect of the 
controller(Triac 
defect)
Change the drain motor.
Remove the objects in 
the PV asm.
Change the PV bellows.
(The bellows may swell 
up if it contact petroleum
or petrochemical 
substance because it is 
made of rubber)
Change the controller.
9) Drain error happens while water drains normally.
Where, what & how to check?
Result of Check
Possible Cause How to repair & settle
Ball Pressure Sensor
1. Check generation frequency of the 
Ball Pressure Sensor without water.
Less than
26.3 kHz
26.3~27.1 kHz
Defect of the 
Ball Pressure
Sensor.
Defect of the 
controller.
Change the Ball
Pressure Sensor
Change the controller.
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