LG WT-101N / WT-R101767TCHP / WT-Y142X / WT-Y132G / WT-Y122G / WT-Y122X / WT-Y122S Service Manual ▷ View online
48
Where, what & how to check?
Result of Check
Possible Cause How to repair & settle
Drain Motor
(For Non-Pump Model only)
(For Non-Pump Model only)
1. Check resistance of the drain
motor if it can not pull the PV link.
∞ Ω
Resistance is
normal.
normal.
Drain motor coil is
open.
open.
Contact defect in
connection parts
or defect of the
controller.
connection parts
or defect of the
controller.
Change the drain motor
→Check the washer
works normally after
reassembling.
(PV link & drain motor
→Check the washer
works normally after
reassembling.
(PV link & drain motor
lever should be
assembled accurately.)
assembled accurately.)
Change the controller if
there is no defects in the
connection parts.
there is no defects in the
connection parts.
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)
(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)
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.
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.
after power is turned on.
Blocked.
Blocked.
Bellows
deformed.
deformed.
Works.
Defect of the drain
motor.
motor.
Defect of PV
Bellows.
Bellows.
Defect of the
controller(Triac
defect)
controller(Triac
defect)
Drain Hose
1. Check whether the drain hose is
installed properly so that the
discharge hight is about
0.9~1.2m from the floor.
discharge hight is about
0.9~1.2m from the floor.
The discharge
height is lower
than
recommendation.
height is lower
than
recommendation.
Wrong installation
of the drain hose.
of the drain hose.
Put the outlet of drain
hose between 0.9m and
1.2m
hose between 0.9m and
1.2m
Change the drain motor.
Remove the objects in
the PV asm.
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)
(The bellows may swell
up if it contact petroleum
or petrochemical
substance because it is
made of rubber)
Change the controller.
49
10) Spining is going on even though the lid is open.
Where, what & how to check?
Result of Check
Possible Cause How to repair & settle
Lid Switch
1. Check resistance between both
terminals of the lid switch with
the lid open.
the lid open.
0~9
Ω
∞ Ω
Contact points of
the lid switch is
welded.
the lid switch is
welded.
Defect of the
controller.
controller.
Change the lead wire
assembly.
assembly.
Change the controller.
11) Vibration, Noise or Unbalance Error happens during spin.
Where, what & how to check?
Result of Check
Possible Cause How to repair & settle
Using conditions such as
installation etc.
installation etc.
1. Check whether the washer is
leveled. (Check clearance with out
tub and out case the left gap is the
same as the right and the rear gap is
1.5~2 time bigger than the front gap,
same as the right and the rear gap is
1.5~2 time bigger than the front gap,
between the cabinet and the wash
bowl, when it is leveled.)
bowl, when it is leveled.)
2. Check whether laundry in the wash
bowl is out of balance that can
cause severe vibration & noise.
cause severe vibration & noise.
3. Check whether the puisator doesn’t
rotate during spin.(To check that,
remove the front lid and than run the
spin only cycle.)
remove the front lid and than run the
spin only cycle.)
Not leveled.
Laundry is
unbalanced.
The pulsator
rotates initially
then the inner tub
rotates.
rotates initially
then the inner tub
rotates.
Defect of
installation
installation
Defect of the
clutch
Level the washer.
Explain that it is not out
of order and it may
happen when big & long
laundry is washed.
of order and it may
happen when big & long
laundry is washed.
Change the clutch
spring-B or the clutch
asm.
spring-B or the clutch
asm.
9) Drain error happens while water drains normally.
Where, what & how to check?
Result of Check
Possible Cause How to repair & settle
Pressure Switch
1. Check generation frequency of the
pressure switch without water.
Less than
26.3 kHz
26.3 kHz
26.3~27.1 kHz
Defect of the
pressure switch.
pressure switch.
Defect of the
controller.
Change the pressure
switch.
switch.
Change the controller.
50
12) Power is automatically turned off during operation or
immediately turning on the power button.
Where, what & how to check?
Result of Check
Possible Cause
How to repair & settle
Mains voltage
1. It is mostly caused by noise from
mains or transient power cut.
Auto Power Relay or Controller
1.Check whether power is
automatically turned off when turning
on the power switch after unplugging
the power cord from the outlet.
on the power switch after unplugging
the power cord from the outlet.
2. It would be defect of the
controller if power is
automatically tumed off
immediately when turning on the
automatically tumed off
immediately when turning on the
power switch even though there
is no defects in the power switch.
is no defects in the power switch.
Automatically
tumed off
tumed off
Defect in mains
Mechanical
defect of the
power switch
defect of the
power switch
Explain the cause
(It happens specially
(It happens specially
when a high
frequency
equipment is a used
around the washer or
in the case voltage
fluctuation is big.)
frequency
equipment is a used
around the washer or
in the case voltage
fluctuation is big.)
Change the switch.
Change the controller.
11) Vibration, Noise or Unbalance Error happens during spin.
Where, what & how to check?
Result of Check
Possible Cause How to repair & settle
Suspension
1. Check whether the outer tub cover
hit the top cover without load
during spin.
during spin.
Hit
Defect of the
Suspension
Suspension
Change four
suspensions
simultaneously.
(In assembling, check
suspensions
simultaneously.
(In assembling, check
the position to
suspension asm)
suspension asm)
※ It is very important to find out what kinds of noise & where comes from to settle
noise during spin and accumulately service experiance.
51
TITLE
5. EXPLODED VIEW
BODY-A
BODY-B
TUB
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