WM2020CW - LG Washing Machine Service Manual (repair manual)

WASHING MACHINE

READ THIS MANUAL CAREFULLY TO DIAGNOSE 
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.

DEC. 2009 PRINTED IN KOREA

P/No.: MFL30599161

1. SPECIFICATIONS ............................................................................................................... 3

2. FEATURES AND TECHNICAL EXPLANATION  ................................................................. 4

3. PARTS IDENTIFICATION  ................................................................................................... 7

4. INSTALLATION AND TEST  ................................................................................................ 8

5. OPERATION ...................................................................................................................... 11

5-1. CONTROL PANEL FEATURES  ................................................................................. 11
5-2. CYCLE GUIDE ........................................................................................................... 13
5-3. SPECIAL FUNCTIONS  .............................................................................................. 14
5-4. EXPLANATION OF EACH PROCESS ....................................................................... 15

6. WIRING DIAGRAM  ........................................................................................................... 17

7. TEST MODE  ..................................................................................................................... 18

7-1. SAFETY CAUTION .................................................................................................... 18
7-2. LOAD TEST MODE  ................................................................................................... 18
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY  ............................................. 18

8. TROUBLESHOOTING ...................................................................................................... 19

8-1. SAFETY CAUTION .................................................................................................... 19
8-2. ERROR MODE SUMMARY  ...................................................................................... 19
8-3. TROUBLESHOOTING SUMMARY    ......................................................................... 21

8-4. TROUBLESHOOTING ELSE ..................................................................................... 28

9. COMPONENT TESTING INFORMATION ........................................................................ 33

9-1. FILTER ASSEMBLY (LINE FILTER) .......................................................................... 33
9-2. DOOR LOOK SWITCH ASSEMBLY .......................................................................... 34
9-3. STATOR ASSEMBLY ................................................................................................. 36
9-4. PUMP MOTOR ASSEMBLY .......................................................................................39
9-5. INLET VALVE ASSEMBLY ......................................................................................... 40
9-6. HEATER ASSEMBLY ................................................................................................. 41
9-7. THERMISTOR ASSEMBLY ....................................................................................... 42

10. DISASSEMBLY INSTRUCTIONS .................................................................................... 43

11.EXPLODED VIEW  ............................................................................................................ 49

11-1. CABINET AND CONTROL PANEL ASSEMBLY ...................................................... 49
11-2. DRUM AND TUB ASSEMBLY .................................................................................. 50
11-3. DISPENSER ASSEMBLY ........................................................................................ 51

1. SPECIFICATIONS

ITEM

WM2020CW

COL

OR                                                                          W:BLUE WHITE

POWER SUPPLY

AC 120 V, 60 Hz 

PRODUCT WEIGHT

179 lbs (81kg)

WASHING

280 W

DRAIN MOTOR

80 W

WASH HEATER

     -

WASH

46  rpm

SPIN

              WM2020C*(1150 rpm)

CYCLES

5

WASH/RINSE TEMPERATURES

5

SPIN SPEEDS

4

OPTIONS

Prewash, Rinse+Spin, Extra Rinse, Water Plus, Stain Cycle

WATER  CIRCULATION

_

OPERATIONAL WATER PRESSURE

14.5-116 psi (100-800 kPa)

CONTROL TYPE

Electronic

WASH CAPACITY [cu.ft]

 WM2020C*(3.16 (3.6 IEC))

DIMENSIONS

27” (W) X 293/4” (D) X 38

11

/16” (H), 50

13

/16” (D, door open)

DELAY WASH

up to 19 hours

DOOR SWITCH TYPE

PTC + Solenoid

WATER LEVEL

10 steps (by sensor)

LAUNDRY LOAD SENSING

Incorporated

ERROR DIAGNOSIS

Incorporated

AUTO POWER OFF

Incorporated

CHILD LOCK

Incorporated

RLM ENABLE

_

STEAM

_

ELECTRIC POWER

CONSUMTION

REVOLUTION SPEED

* To reduce the risk of personal injury, adhere to all industry recommended safety procedures 
including the use of long sleeved gloves and safety glasses. Failure to follow all of the 
safety warnings in this manual could result in property damage, personal injury or death.

WARNING