DOWNLOAD LG WFW1532EK Service Manual ↓ Size: 12.79 MB | Pages: 55 in PDF or view online for FREE

40

ERROR

DOOR

OPEN

PRESSURE

SENSOR

LAUNDRY

AMOUNT

SENSOR

LID is opened in
the course of
intermittent spin,
normal spin or
processing
reservation.

SIGNAL
continuously
ringing.

Water Pressure
Switch is off.

In the second QC
MODE, the
following
message is
displayed.

Lid is opened during
intermittent spin or normal
spin?
Lid is opened while
processing reservation?
Connector to the S.F S/W or
White(WH) 3 PIN
CONNECTOR to the P.W.B
ASM has bad connection.
S.F S/W or BALL
PRESSURE SENSOR is
bad or bad contact.
Is placed magnetic in LID?

Connector the Ball Pressure
Sensor(Pressure Switch) or
BLUE(BL) 3 pin connector to
P.W.B ASM has bad
connection.
Ball Pressure Sensor
(Pressure Switch) is bad. (In
the initial state of QC TEST
MODE, the number on the
DISPLAY is less than 63 or
more than 70)

Check MOTOR, CLUTCH,
V-BELT, CONDENSOR.
Check over all connectors if
they have bad connection.

Closed the lid.

Closed the lid.

Correct the connector
contact.

Check and replace S.F S/W
or BALL PRESSURE
SENSOR.
Change the LID.

Correct the connector
contact.

Replace Ball Pressure
Sensor(Pressure Switch).

Try to fill laundry uniformly in
the inner tub.
Adjust the leg.
Check and replace S.F S/W.

Check B.P SENSOR
CONNECTOR or replace
B.P sensor

ERROR DECISION

BASIS

CAUSE FOR ERROR

OCCURRENCE

REMEDY

41

Where, what & how to check?

Result of Check

Possible Cause

How to repair & settle

1. Check whether connection between the

plug and the electrical is poor

2. Measure voltage of the electrical.

1. Measure resistance between both ends

of the power supply cord with both the
plug pins short-circuited.

2. Check whether every connector in the

bundle of connectors has a good
connection.

3. Check resistance of every wire to find

out a open wire.

1. Check resistance with power relay

switch turned on

2. Check the secondary voltage of the

transfomer.

3. Measure resistance to check whether

the T.P of the motor is blown out.

4. Check whether the fuse is open.

If there are no defects in the above,
it should be defect of the controller.

If supply voltage is 120% higher than
rating the varistar in the controller may
be broken. Check supply voltage.

Poor

Around rating

0 V 

Less than 1

∞

Male & female
connectors separated

∞

Less than 0.5

More than 1.0 

10~14 V

0 V

∞ Ω

and motor is hot

Open

Over 120% voltage
than rating check

Change the controller if all
the electrical parts have no
defects.

Defect of the electrical

No defect

Defect of household
power supply

No defect

Open circult of the power
supply cord

Poor connection

Wire is opened.

No defect

Poor contact

No defect

Coil is open

T.P blown out.

Defect of the fuse

Change the electrical.

Call for power supply
company

Change the power supply
cord.

Remove the cause to give
strain and reconnect
them.

Change the lead wire

Change the AUTO OFF
Switch

Change the

transfomerformer.

Remove cause to

overload the motor

Change the fuse.
CAUTION
Check the fuse rating
AC100~127V:125V 12A
AC220~240V:250V 6A

42

Where, what & how to check?

Result of Check

Possible Cause

How to repair & settle

1. Measure mains voltage at the wall outlet

2. Meaure voltage at the extended
outlet that the washer is plugged in
if the extended outlet is used and
voltage at the electrical outlet
is normal in the above.

1. Measure the secondary voltage of the

transfomer.

1. Defect of LED.
2. Defect of LED driving circuit.
3. Defect of micom.

Less than 85% of the
rating 

Less than 85% of the

rating 

Less than AC 10V

Low voltage

The dia of the lead wire is
smaller or many loads are
connected at the same
outlet

Defect of the transfomer

Defect of controller.

Change the controller.

Change the controller.

To explain that it is
caused by low voltage in
electric supply and
recommend using a
transfomer if voltage has
been continuously low.

To use a transfomer
having a enough capacity
if using a transfomer.

Where, what & how to check?

Result of Check

Possible Cause

How to repair & settle

1. Measure voltage of the outlet that the

washer is plugged into during wash and
spin.

2. Reset symptom happens at specific time

zone repeatedly.

3. Check whether a transfomerlent power

cut happens. (Fluorescent lamp is
transfomeriently blinked)

Less than 80% of the
rating.

Mains voltage is too low
or size of a lead wire is
too small.

External noise inrushed.

Explain that it is caused
by low voltage in electric
mains and recommend
using a suitable size of
leads.

Explain it is caused by
using environment.
(It happens when
equipment with high
frequency is used
around)

Explain it is a problem of
electric supply
environment.

43

Where, what & how to check?

Result of Check

Possible Cause

How to repair & settle

1. If water doesn’t come though the inlet

valve works(electric sound occurs)

1) Check whether water mains is cut.

2) Check whether tabs are turned on.

3) HOT & COLD tab are opposite

connected.

4) Wrongly select Water Temperature

option.

5) If there are no problems in the above,

check the inlet valve filters after

disconnecting the water supply hoses.

6) If there are no problems in the above a

diaphragm hole in the valve is blocked

by foreign substance or the plunger in it

is locked.

2. If the inlet valve doesn't work(there is no

electric sound)during filling cycle.

1) Check whether it’s connectors are taken

off or they have poor connection.

2) Check resistance of the inlet valve.

Water mains cut.

Dont tumed on.

Connected opposite.

Selected opposite.

Filters blocked by

foreign substance.

A connector is taken

off.

∞ Ω

Mains cut.

Mistake of use.

Wrong installation.

Mistake of use.

Don’t clean.

Defect of the inlet valve.

Defect of contact.

Coil is open

Explain.

Turn on the tap.

Correct their locations and

turn on the tap.

Explain how to use.

Clean them by brush and

explain cleaning regulary

them.

Change the inlet valve.

Reconnect it or remove

the causes to make poor

connection.

Change the inlet valve.

Where, what & how to check?

Result of Check

Possible Cause

How to repair & settle

1. Operate washer setting spin only, then

press the START/PAUSE button when
the wash motor starts to work and then
press the START/PAUSE button again
in order for the drain motor to work
intermittently.

1. If mains voltage and the drain motor

have no defects a defect of the controller
is highly possible.

Reset happens after
the drain motor
works.

Defect of the drain motor
(A noise generated when
the internal relay works.)

Change the drain motor

Change the controller.