DOWNLOAD LG WM-1437LFD Service Manual ↓ Size: 4.14 MB | Pages: 36 in PDF or view online for FREE

6. WIRING DIAGRAM

/ 

PROGRAM CHART

Drain

I

⁄

S

Heat

Steam

Wash

Drain

I

⁄

S

Drain

I

⁄

S

Drain

I

⁄

S

Drain

I

⁄

S

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

60

(”—) 60

180 120

(”—) 60

180 120 180 60

180 120 180 60

180 120 180 60

180 120 180 60

480 180 20

20

8

12

42

8

12

42

8

12

8

8

12

42

20

**Approx

Working

Time

(Minute)

28

19

155

68

72

62

72

30

E

N
D

A
U

T

O

O

F
F

116

88

Rinse

Spin

Drain

Spin

D

⁄

T

Extra &

Stain(4~6)

W

⁄

S

Rinse

3

W

⁄

S

Rinse

2

W

⁄

S

Rinse

Wash

1

W

⁄

S

Rinse

Wash

Pre

Main

W

⁄

S

Wash

W

⁄

S

Baby Care

Wash

Spin

Duvet

Quick 30

Rinse+Spin

Refresh

Cotton

Synthetic

Delicate

Hand Wash

/Wool

7. TROUBLE SHOOTING

7-1.BEFORE SVC CHECKING

■ Be careful of electric shock or disconnecting the parts while trouble shooting.
■ Voltage of each terminal in 220-240V~ and DC while applying an electric current.

7-2.QC TEST MODE.

①

① Pressing Rinse and Steam Wash button simultaneously.
②

② Press the Power        button, while the above condition.
③

③ Press the Start/Pause button as follows. 

7-4.HOW TO KNOW TO TEMPERATURE OF EACH THERMISTOR AT OPERATING CONDITION.

7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY

So, for example a display indicating 058: 
a Water level frequency of  20+(58 x 0.1)= 25.8 kHz

Press the Rinse and Medic Rinse button simultaneously.

• The digits indicate the water level frequency.

Check Point

Display Status

None

Turns on all lamps and locks the door.

1 time

Tumble clockwise.

rpm (42~50)

2 times

Low speed Spin.

rpm (55~65)

3 times

High speed Spin.

rpm (125~155)

4 times

Inlet valve for prewash turns on.

Water level frequency (25~65)

5 times

Inlet valve for main wash turns on.

Water level frequency (25~65)

6 times

Inlet valve for hot water turns on.

Water level frequency (25~65)

7 times

Inlet valve for steam turns on.

Water level frequency (25~65)

8 times

Inlet valve for bleach turns on.

Water level frequency (25~65)

9 times

Tumble counterclockwise.

rpm (42~50)

10 times

Heater turns on for 3 sec.

Water temperature

11 times

Circulation pump turns on.

Water level frequency (25~65)

12 times

Drain pump turns on.

Water level frequency (25~65)

13 times

Water level Sensor for Steam

Water level frequency of TSG(0~255)

14 times

Steam Heater turns on for 1.2 sec.

TSG temperature

15 times

Off

-

Number of times the

Start/Pause button is pressed

QC TEST MODE

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

Press the Rinse and Medic Rinse button simultaneously.

• Thermistor in tub temperature.

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

7-5.ERROR DISPLAY.

If you press the Start/Pause button in error condition, any error except ‘

’ will disappear and the

machine will change into pause status.

In case of 

d

e, d

e, if the error is not resolved within 20 sec., and 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 case of 

d e, power will not be turned off.

• Not reached to the water level(246)within 8

minutes after water supplied or not reached to

the preset water level within 25 minutes.

• Not fully drained within 10 minutes.

• Water is over flowing(over 8 level).

※ If  “          ” is displayed, drain pump operates to

drain water automatically.

• The sensor pressure switch is out of order.

• In case of operating the reservation function or

the other function with door opened. Close the

door, then the error display is resolved.

• The door switch is out of order.

• The appliance is tilted.

• Laundry is gatherd to one side.

• The THERMISTOR is out of order.

WATER INLET

ERROR

DRAIN ERROR

OVERFLOW

ERROR

SENSOR PRESSURE

S/W ERROR

DOOR OPEN

ERROR

IMBALANCE

ERROR

HEATING

ERROR

• The connector in the LEAD WIRE ASSEMBLY is not connected to

the connnector of STATOR ASSEMBLY

Reconnect or repair the connector

• The hall sensor is out of order/defective.

Replace the STATOR ASSEMBLY

• Water leaks

• The washer ecperienced a power failure

AE

PF

7-6. HOW TO KNOW THE TUB AND AG TEMP.

Press the Rinse and Temp. button simultaneously.

• The digits indicate the water Temp. in theTub

• The digits indicate the water Temp. in the AG

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

***

LOCKED

MOTOR

ERROR

POWER

FAILURE