DOWNLOAD LG WF-SA12HD6 Service Manual ↓ Size: 12.82 MB | Pages: 57 in PDF or view online for FREE

Model
WF-SA12HD6
Pages
57
Size
12.82 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
wf-sa12hd6.pdf
Date

LG WF-SA12HD6 Service Manual ▷ View online

48
6) Display "LE" message and doesn't work
Where, what & how to check?
Result of Check
Possible Cause
How to repair & settle
1. In initial state display “LE ” message.
1) Measure voltage of hall sensor asm.
2) Check resistance of the motor.
Gray-White
DC 15V
OV
Gray - Red
-Blue
DC 12V
OV
Normal Resistance
No defect
Poor
No defect
Poor
Motor coil is open.
Contact defect of the leak.
Change the PCB Asm
Change the PCB Asm
Change the motor
Remove the cause
Brown
Hall sensor 
assembly
DC 15V
In PCB assembly
Black / (Ground) White
Blue Red
49
7) Water does not drain.
Where, what & how to check?
Result of Check
Possible Cause
How to repair & settle
1. Check whether there is drain pump/
drain valve working sound.
2. Check resistance between terminals if
there is no working sound of the drain
pump/drain valve.
3. Check connection parts of the leads if
there is no working sound and its
resistance is normal.
Drain Hose
1. Check whether the drain hose is put in a
narrow space and kinked.
2. Check whether the drain hose is
blocked by foreign objects. It may
happen in case of the hose is a little
kinked.
There is pump/valve
working sound.
∞ Ω
Defect in connection
part.
Connection part has
no defects.
Kinked.
Blocked.
Drain pump/drain valve 
is blocked by
foreign objects.
Itʼs coil is open.
Defect in connection part.
Defect of the controller.
Defect of installation.
Blocked hose.
Disassemble the drain pump/
drain valve cap and remove
the foreign objects in the 
casing.
Change the drain pump/
drain valve.
Repair defected connection.
Change the controller.
Reinstall so that it should
not be kinked.
Remove the objects and
reinstall so that it canʼt
be kinked.
8) Water drains thought it is not the time of drain.
Where, what & how to check?
Result of Check
Possible Cause
How to repair & settle
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.
Bellows deformed.
Works.
Defect of PV Bellows.
Defect of the controller
(Triac defect)
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.
Drain Pump/Drain Valve
50
Where, what & how to check?
Where, what & how to check?
Where, what & how to check?
9) Drain error happens while water drains normally.
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
26.3~27.1 kHz
Defect of the pressure
switch.
Defect of the controller.
Change the pressure switch.
Change the controller.
10) Spining is going on even though the lid is open.
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.
0~9 Ω
∞ Ω
Contact points of the lid
switch is welded.
Defect of the controller.
Change the lead wire
assembly.
Change the controller.
8) Water drains thought it is not the time of drain.
Result of Check
Possible Cause
How to repair & settle
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.
The discharge height
is lower than
recommendation.
Wrong installation of the
drain hose.
Put the outlet of drain hose
between 0.9m and 1.2m
51
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.
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, between the cabinet
and the wash bowl, when it is leveled.)
2. Check whether laundry in the wash bowl
is out of balance that can cause severe
vibration &noise.
3. Check whether the puisator doesnʼt
rotate during spin. (To check that,
remove the front lid and than run the
spin only cycle.)
Suspension
1. Check whether the outer tub cover hit
the top cover without load during spin.
Not leveled.
Laundry is
unbalanced.
The pulsator rotates
initially then the inner
tub rotates.
Hit
It is very important to find out what kinds of noise & where comes from to settle noise during spin and accumulately
service experiance.
Defect of installation
Defect of the clutch
Defect of the Suspension
Level the washer.
Explain that it is not out of
order and it may happen
when big &long laundry is
washed.
Change the clutch spring-B
or the clutch asm.
Change four suspensions
simultaneously.
(In assembling, check the
position to suspension asm)
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
Defect in mains
Explain the cause
(It happens specially when a
high frequency equipment is
a used around the washer or
in the case voltage fluctuation
is big.)
Mains voltage
1. It is mostly caused by noise from mains
or transient power cut.
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