LG WM2140C Series User manual

WASHING MACHINE
SERVICE MANUAL
MODEL : WM2140C*
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.

Jul. 2010 PRINTED IN KOREA P/No. : MFL30599177

3
1. SPECIFICATIONS
POWER SUPPLY
PRODUCT WEIGHT
-
-
14.5 - 116 psi (800 kPa)
Electronic
27” (W) X 301/32”(D) X 3811/16”(H), X 5013/16”(D door open)
up to 19 hours
PTC + Solenoid
12 Step (by sensor)
42 rpm
0 - 1100 rpm
7
190 lbs. (86kg)
Incorporated
Incorporated
Incorporated
Incorporated
CYCLES
WASH/RINSE TEMPERATURES
OPTIONS
CUSTOM PROGRAM
WATER CIRCULATION
OPERATIONAL WATER PRESSURE
CONTROL TYPE
DIMENSIONS
DELAY WASH
DOOR SWITCH TYPE
WATER LEVEL
LAUNDRY LOAD SENSING
ERROR DIAGNOSIS
AUTO POWER OFF
CHILD LOCK
SPIN SPEEDS
ELECTRIC POWER
CONSUMTION
WASHING
DRAIN MOTOR
WM2140C*
W:BLUE WHITE
AC 120 V, 60 Hz
280 W
80 W
5
5
Prewash, Rinse+Spin, Quick Cycle, Stain Cycle, Tub Clean,
Delay Wash, Water Plus, Extra Rinse
REVOLUTION SPEED
WASH
SPIN
COLOR
ITEM

4
2. FEATURES & TECHNICAL EXPLANATION
2-1. FEATURES
■Direct Drive System
The advanced Brushless DC motor directly drives the drum without
belt and pulley.
■Tilted Drum and Large Door Opening
Tilted drum and large opening make it possible to load
and unload clothing more easily.
■Time-Released Dispenser
Detergent, fabric softener and bleach are dispensed separately at
the right time during wash cycle.
■Automatic Wash Load Detection
Automatically detects the load and optimizes the washing time.
■Child Lock
The Child lock prevents children from pressing any button to
change the settings during operation.
추가선택, 예약,
5

5
2-2. NEURO FUZZY WASHING TIME OPTIMIZATION
To get the best washing performance, optimal time is determined by the water temperature,
the selected washing temperature, and the size of the load.
2-3. WATER LEVEL CONTROL
●This model incorporates a pressure sensor which can sense the water level in the tub.
●The water supply is stopped when the water level reaches the preset level, the washing
program then proceeds.
●Spinning does not proceed until the water in the tub drains to a certain level.
2-4. DOOR CONTROL
●The door can be opened by pulling the door handle whenever washer is not in operation.
●When the cycle is completed, the DOOR LOCKED light will turn off.
●If a power failure has occurred while in operation, the door will unlock after 5 minutes.
●Clicking sounds can be heard when the door is locked/unlocked.
NEURO-
FUZZY
load
size
selected
washing
temperature
water
temperature
washing time
rinsing time
spin rhythm, time
the best
washing
performance
SENSING PROCESSING DETERMINATION EFFECT

6
2-5. THE DOOR CAN NOT BE OPENED
● While program is operating
● When a power faile an power plug is taken out in operation
● While Door Lock lights turn on.
● White the motor is in the process of intertial rotating, through the operation is pause .
2-6. DOOR LOCKED LAMP LIGHTS
● When the frequency of water level is lower than 22.9 kHz
(It can be cancele when the frequency is more than 23.8 kHz)
● When the temperature insi e the tub is higher than 45 °C an water level is not 25.5 kHz
(It can be cancele when the water level is 25.5 kHz or the temperature insi e the tub is lower than 40 °C)
2-7. CHILD LOCK
● Use this option to prevent unwante use of the washer. Press an hol OPTION button for 3 secon s to
lock/unlock control.
●
CHILD LOCK lasts after the en of cycle. If you want to eactivate this function,Press an hol the OPTION
button for 3 secon s.
● When Chil lock is set,   blinks an all buttons are isable except the Power button. You can lock
the washer while it is operating.

7
3. PARTS IDENTIFICATION
WASH WASH
EST. TIME
EST. TIME
SPINSPIN
Hose retainer
Hot/Cold (1 each)
Hose
Wrench
for removing shipping bolts
and leveling the washer
Tie strap
to secure drain hose to standpipe,
inlet hose, or laundry tub
Cap (4 each)
to cover the holes created after
removing the shipping bolts
■ACCESSORIES

8
4. INSTALLATION & TEST

99
■HOW TO CONNECT THE INLET HOSE
󳢯Verify that the rubber washer is inside of the
valve connector.
󳢯Tighten the inlet hose securely to prevent leaks.
■CONNECT THE DRAIN HOSE
■CONNECT POWER PLUG
※The end of the drain hose should be placed less than 96 ” from the floor.
·Connect the power plug to the wall outlet. ·Avoid connecting several electric devices, as
doing so may cause a fire.
WASH
WASH,
EST. TIME
EST. TIME,
SPIN
SPIN,
WASH
WASH,
EST. TIMEEST. TIME,
SPINSPIN,
WASH
WASH
,
EST. TIME
EST. TIME
,
SPIN
SPIN
,
·Make sure that the hose is not twisted. ·Avoid submerging the end of the hose.

10
SOFTENER
MAX
WASH
WASH,
EST. TIME
EST. TIME,
SPIN
SPIN,
WASH
WASH,
EST. TIME
EST. TIME,
SPIN
SPIN,
WASH
WASH,
EST. TIME EST. TIME,
SPIN
SPIN,
󳞊TEST OPERATION
󳢯Connect the power plug to
the outlet.
󳢯Connect the inlet hoses.
󳢯Power off and the power on.
󳢯Press the SPIN SPEED button.
󳢯
Press the START/PAUSE button.
󳢯Check the spin and drain
functions.
󳢯 Listen for a click to determine
if the door is unlocking.
󳢯Listen for a click to determine if
the door has locked.
󳢯If SVC is needed during check,
remove the remaining water by
pulling out the hose cap.
Preparation for Press the POWER button. Press the Start/Pause
washing. button.
󳢯Press the WASH/RINSE button 󳢯Check if the drum rotates 󳢯Check if water is supplied
and the present temperature will
clockwise and counterclockwise. through the detergent dispenser.
be displayed.
Check the water Check the automatic Check the water supply.
temperature. reverse rotation.
Check the drain and spin
Press the Water removal
functions.
START/PAUSE button.

11
5. OPERATION
■ WM2140C*

12
5. OPERATION

13
6. WIRING DIAGRAM/PROGRAM CHART
■ WM2140C*

14
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
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


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

 













 

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BULKY/
LARGE


,





PERM.
PRESS
DELICATES
Normal Extra Rinse
COTTON/
NORMAL
HAND WASH/
WOOL
SPEED
WASH
DRAIN+
SPIN


15
7-1. BEFORE PERFORMING SERVICE
■ Be careful of electric shock whe disco ecti g parts while troubleshooti g.
■ The voltage of each termi al is 120 V AC a d DC whe the u it is plugged i .
7-2. QC TEST MODE.
The washer must be empty a d the co trols must be i the off state.
1. Press the SPIN SPEED a d SOIL LEVEL butto s simulta eously.
2. Press the Power butto , while the above co ditio . The buzzer will sou d twice.
3. Press the Start/Pause butto repeatedly to cycle through the test modes.
4. Alter ate bli ki g of , a d
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY
Press the Delay a d Sig al butto simulta eously.
So, for example a display i dicati g 241: a Water level freque cy of 241 x.1 kHz
= 24.1 kHz
The digits i dicate the water level freque cy ( x.1 kHz ).
sutatSyalpsiDtioPkcehC
No e Tur s o all lamps a d locks the door.
1time Tumble clockwise. rpm (40~50)
mpr.ipSdeepswoLsemit2
mpr.ipSdeepshgiHsemit3
4times I let valve for prewash tur s o . Water level freque cy (25~65)
5times I let valve for mai wash tur s o . Water level freque cy (25~65)
6times I let valve for hot water tur s o . Water level freque cy (25~65)
7times I let valve for bleach tur s o . Water level freque cy (25~65)
8times Tumble cou terclockwise. rpm (40~50)
9times
Water temperature (Thermistor) Water temperature [°C]
10 times Drai pump tur s o . Water level freque cy (25~65)
11 times
Power off a d u lock the door. Tur off all lamps.
Number of times the
Start/Pause butto is pressed

16
7-4. ERROR DISPLAY
󳢯If you press the START/PAUSE button when an error is displayed, any error exceptdewill
disappear and the machine will go into the pause status.
󳢯In case ofde,de,deif the error is not resolved within 20 sec., or the in case of other errors,
if the error is not resolved within 4 min., power will be turned off automatically and the error code will
blink. But in the case ofde, power will not be turned off.
ERROR SYMPTOM CAUSE
WATER INLET
ERROR
•Correct water level (246) is not reached within 8 minutes
after water is supplied or it does not reach the preset water
level within 25 minutes.
•The load is too small.
•The appliance is tilted.
•Laundry is gathered to one side.
•Non distributable things are put into the drum.
1
2
IMBALANCE
ERROR
•Not fully drained within 10 minutes.
3
DRAIN
ERROR
•Water is overflowing (water level frequency is over 213).
※If is displayed, the drain pump will operate to
drain the water automatically.
4
OVER FLOW
ERROR
•The SENSOR SWITCH ASSEMBLY is out of order.
5
PRESSURE
SENSOR
ERROR
•Door not all the way closed.
•Loose electrical connections at Door switch and
PWB Assembly.
•The DOOR SWITCH ASSEMBLY is out of order.
6
DOOR OPEN
ERROR
•The THERMISTOR is out order.
7
THERMISTOR
ERROR

17

18
8-1. DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION
8. ERROR DIAGNOSIS AND CHECK LIST
SYMPTOM GUIDE FOR SERVICE CALL
No power
Water inlet trouble
YES
YES
YES
NO
NO
YES
NO
NO
Is the power plug connected firmly to
120 V AC outlet?
Power failure? or Breaker opened?
Is the outlet controlled by a switch?
Visit to service.
Is displayed?
Is the tap opened?
Is the tap frozen?
Is the water supply shut-off?
Is filter in the inlet valve clogged with
foreign material?
Visit to service.
Clean the filter of
inlet valve

19
SYMPTOM GUIDE FOR SERVICE CALL
Door error
Drain trouble
Was the load too large?
Visit to service.
Visit to service.

20
SYMPTOM GUIDE FOR SERVICE CALL
Suds overflow from the
appliance.
(In this condition, wash and
spin do not operate normally)
YES
YES
YES
YES
SOFTENER
MAX
(4) Main Wash Compartment
4
Is a low-sudsing detergent used?
Is the proper amount of detergent used
as recommended?
Recommend to reduce the amount
of detergent.
Is liquid laundry product put in the correct
compartment of the dispenser?
Is the cap clogged?
Explain proper use of liquid laundry products.
Clean the compartment.
Visit to service.
LOW-SUDSING
󳢮This appliance has an automatic suds sensing function which
prevents overflow.
󳢮When excessive suds are sensed, the suds removing
implementations such as drain, water input, pause will operate,
without rotating the drum.
Liquid laundry products do not
flow in.