DOWNLOAD LG F71257XMS / F81257XM / F81257XMS Service Manual ↓ Size: 37.33 MB | Pages: 44 in PDF or view online for FREE

16

Program Chart

2

1:07

1

45

00

2:46

1:41

1:00

1:45

1:00

Wool

Cotton

Cotton Eco

Sport Wear

Mix

Duvet

Intensive 60

Easy Care

Skin Care

Delicate

1560

100

1560

720

2:19

90

24

420

26

420

14

420

40

720

20

480

67

57

480

25

480

Baby Care

Rinse+Spin

Quick 30

40

420

30

420

36

660

17

360

Before servicing ask the customer what the trouble is.
Check the adjustments. (Power supply :220-240V~, Removal of transit bolts etc..)
Check the troubles referring to the troubleshooting.
Decide service steps referring to disassembly instructions.
Then, service and repair.
After servicing, operate the appliance to see whether it works OK or NOT.

17

7. TROUBLESHOOTING

7-1. BEFORE PERFORMING SERVICE

7-2. LOAD TEST MODE

1 F**96TD(P)(1~9) : Press and Hold ‘

Temp.

’ & ‘

Spin

’ buttons and then press ‘

Power

’ button.

7-3. HOW TO KNOW THE WATER LEVEL FREQUENCY

F**96TD(P)(1~9) : Press and Hold ‘

Spin.

’ & ‘

Pre Wash

’ buttons simultaneously.

2 The washer must be empty and the controls must be in the off state.
3 Press Power with above two buttons pressed and then buzzer will sound.
4 Press the Start/Pause button repeatedly to cycle through the test modes

1
2
3
4

5
6

None 

1 time 

2 times 
3 times 

4 times 
5 times 

6 times 
7 times 
8 times 
9 times 

10 times 

All lamps turn on
Clockwise spin (right) 
Low speed Spin 
High speed Spin

Inlet valve for pre-wash operation
Inlet valve for main-wash operation
Hot inlet valve in case of hot water fill
Inlet valve for main-wash operation
Counterclockwise spin (left) 
A Heater is in operation for 3 sec.
Draining pump operation 
Auto off operation

Motor rpm (About 47)
Motor rpm (About 590~650)

Motor rpm (About 950~1050) : F10**(T/Q)D(P)(1~9)
Motor rpm (About 1100~1250) : F12**(T/Q)D(P)(1~9) 

Motor rpm (About 1350~1400) : F14**(T/Q)D(P)(1~9) 

Water level frequency (225~265)

Water level frequency (225~265)

Water level frequency (225~265)

Motor rpm (About 47)
Water Temperature

Water level frequency

The digits means water level frequency (10

-1

kHz)

ex) 241 : Water level frequency = 241 X 10

-1

kHz

= 24.1kHz

Pressing number of

[Start/Pause] button

Checking Point

Display Status

F**96(T/Q)D(P)(1~9)

18

7-4. ERROR DISPLAY

If you press the [Start/Pause] button when an error in displayed, any error except software ERROR will
disappear and the machine will change into pause status.
In case of        ,        ,        , if the error is not resolved within 15 sec. In case of other errors, if the
error is not resolved within 4 min. Power will be turned off automatically and the error only will be
blinked. But in the case of       , power will not be turned off.

ERROR

SYMPTOM

CAUSE

WATER 

I

NLET

E

RROR

Water has not reached to the pre-set level within 4 min.

since inlet valve operated, or water has not reached to

the normal level within 25 min. 

Page 21

1

U

NBALANCED 

E

RROR

2

WATER 

O

UTLET

E

RROR

3

OVER

F

LOW 

E

RROR

4

The appliance is tilted.
Laundry is gathered to one side.
Non distributable things are put into the drum.

Page 22

Water has not drained enough within 8 min.

Page 23

Water is automatically being pumped out because too

amuch water is in the tub.

Page 25

P

RESSURE SENSOR

S/W 

E

RROR

5

The sensor pressure switch is out of order.

Page 26

D

OOR OPEN 

E

RROR

6

The [Start/Pause] button is pressed with the door open.
The door switch is out of order.

Page 27

T

HERMISTOR(HEATING)

E

RROR

7

The thermistor is out of order. 

Page 28

P

OWER

F

AILURE

10

The washer experienced a power failure.

C

URRENT

E

RROR

8

PWB ASSEMBLY (Main) is out of order

Replace the PWB assembly (Main)

Winding in the MOTOR is short-circuited.

Replace the MOTOR

MOTOR

L

OCKED 

E

RROR

9

The Connector (3-pin, male, white) in the wire harness

is not connected to the Connector (3-pin, female, white)

of MOTOR.

Reconnect or repair the connector

The electric contact between the connectors [3-pin,

male, white in the wire harness and 6-pin, female, white

in the PWB ASSEMBLY (Main]) is bad or unstable.

Reconnect or repair the contact in the connector

The wire harness between the MOTOR and PWB

ASSEMBLY (Main) is cut (open circuited).

The hall sensor is out of order/defective.

Page 29

7-5. TROUBLESHOOTING WITH ERROR

Water Inlet Error (IE)

Is the water tap closed ?

[Note] Environmental safety check list

1. No water tap leakage & freeze.

2. No entanglement of water supply hose.

.

e

g

a

k

a

e

l 

e

s

o

h

 

y

l

p

p

u

s

 r

e

t

a

w

 

o

N

 .

4

.

e

g

a

tr

o

h

s

 r

e

t

a

w

 

o

N

 .

3
5. No the inlet filter clogged.

Check the 

Water tap

and  open it fully .

When there is water in the tub,
is the water level frequency
over 25.5KHz ?

Reconnect or repair the 

Connector

.

Or replace the 

Harness

.

Replace the 

Inlet Valve

.

Is the 

Connector

connected correctly to 

the 

Main PCB

and the 

Inlet Valve

?

Or is the 

Harness

alright ?

Check the 

Air Chamber

and 

the Tube

(clogged) 

And When you check the water level frequency again, 
if it is over 25.5KHz, you replace 

the Pressure switch.

YES

YES

NO

NO

Replace the 

Main PCB

.

NO

YES

YES

NO

NO

Is the each resistance of Inlet Valve within
3.5 ~4.5 kΩ ?

When the washing machine is started, 
is operated the inlet valve? 

Pre. Valve

Main Valve

19

1

2

1

2