LG WM2350H*C User manual

WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
MODEL: WM2350H*CMODEL: WM2350H*C
CAUTION
Website: http: //www.LGEservice.com
E-mail: http: //www.LGEservice.com/techsup.html
!

MAR. 2007 PRINTED IN KOREA P/No.: MFL30599168

2
CONTENTS
1. SPECIFICATIONS .........................................................................................................................3
2. FEATURES & TECHNICAL EXPLANATION ................................................................................ 4
3. PARTS IDENTIFICATION ............................................................................................................ 7
4. INSTALLATION & TEST ............................................................................................................... 8
5. OPERATION ................................................................................................................................11
6. WIRING DIAGRAM/PROGRAM CHART.....................................................................................13
7. TROUBLESHOOTING.................................................................................................................14
7-1. BEFORE PERFORMING SERVICE ...................................................................................14
7-2. QC TEST MODE.................................................................................................................14
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY ......................................................14
7-4. ERROR DISPLAY ...............................................................................................................15
8. ERROR DIAGNOSIS AND CHECK LIST ....................................................................................17
8-1. DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION ........................................17
8-2. FAULT DIAGNOSIS AND TROUBLESHOOTING ..............................................................20
9. DISASSEMBLY INSTRUCTIONS ...............................................................................................27
10. EXPLODED VIEW .....................................................................................................................35
10-1. CABINET & CONTROL PANEL ASSEMBLY....................................................................35
10-2. DRUM & TUB ASSEMBLY................................................................................................36
10-3. DISPENSER ASSEMBLY .................................................................................................37

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1. SPECIFICATIONS
ITEM
COLOR W:BLUE WHITE, R:CANDY APPLE RED
POWER SUPPLY AC 120 V, 60 Hz
PRODUCT WEIGHT 190lb (86kg)
WASHING 280 W
DRAIN MOTOR 80 W
WASH HEATER 1000 W
WASH 46 rpm
SPIN 0-1200 rpm
CYCLES 9
WASH/RINSE TEMPERATURES 5
SPIN SPEEDS 5
OPTIONS
Prewash, Rinse+Spin, Extra Rinse, Water Plus, Delay Wash, COLDWASH™
WATER CIRCULATION _
OPERATIONAL WATER PRESSURE 14.5
-
116 psi (100-800 kPa)
CONTROL TYPE Electronic
DIMENSIONS
27” (W) X 29 3/4” (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
WM2350H*C
WWARNINARNING:G:
To reduce the risk of injury to persons, 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, injury to persons or death.
!

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2. FEATURES & TECHNICAL EXPLANATION
2-1. FEATURES
■Ultra Capacity
The Larger drum enables not just higher head drop and stronger
centrifugal force, but also less tangling and wrinkling of the
laundry. Heavier loads, such as king size comforters, blankets,
and curtains, can be washed.
■Direct Drive System
The advanced Brushless DC motor directly drives the drum
without
belt and pulley.
■Tilted Drum and Extra Large Door Opening
Tilted drum and extra large opening make it possible to load
and unload clothing more easily.
■Automatic Wash Load Detection
Automatically detects the load and optimizes the washing time.
■Built-in Heater
Internal heater helps to maintain water temperature at its
optimum level for selected cycles.
■Child Lock
The Child lock prevents children from pressing any button to
change the settings during operation.
???°º±?? øπæ‡
???°º±?? øπæ‡

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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 failed and power plug is taken out in operation
●While Door Lock lights turn on.
●While the motor is in the process of intertial rotating, through the operation is paused.
2-6. DOOR LOCKED LAMP LIGHTS
●When the frequency of water level is lower than 22.9 kHz
(It can be canceled when the frequency is more than 23.8 kHz)
●When the temperature inside the tub is higher than 45 °C and water level is not 25.5 kHz
(It can be canceled when the water level is 25.5 kHz or the temperature inside the tub is lower than 40 °C)
2-7. CHILD LOCK
●Use this option to prevent unwanted use of the washer. Press and hold PRE WASH button for 3 seconds to
lock/unlock control.
●When Child lock is set, CHILD LOCK Indicator lights and all buttons. You can lock the washer while it is
operating.

7
3. PARTS IDENTIFICATION
■ACCESSORIES
Hot and Cold
Water Hoses
Non-skid pads
Wrench
(for removing shipping
bolts and adjusting and
locking leveling feet)
Tie Strap
(for securing
drain hose) Elbow Bracket
(for securing
drain hose)
Caps (4)
(for covering
shipping bolt holes)
Door Seal
Drain Hose
Dispenser
Door
Lower Cover Cap
Drain Plug Drain Pump Filter
Adjustable Feet
Drum
Control Panel
Power Plug
Shipping Bolts

8
󰌸Before servicing, ask the customer what the trouble is.
󰌹Check the setup (power supply is 120 V AC, remove the transit bolts....).
󰌺Check with the troubleshooting guide.
󰌻Plan your service method by referring to the disassembly instructions.
󰌼Service the unit.
󰌽After servicing, operate the appliance to see whether it functions correctly.
■STANDARD INSTALLATION
The appliance should be installed as follows:
REMOVE THE SHIPPING INSTALL THE APPLIANCE ADJUST THE
BOLTS
ON A FLAT AND FIRM SURFACE LEVELING
•Remove the 4 shipping bolts •Turn the leveling feet to adjust
with the supplied wrench. the appliance.
※Do first lower side to remove easily.
•Keep the shipping bolts and
spanner for future use.
•Insert the 4 caps
(provided) into the hole.
•Turn clockwise to raise;
counterclockwise to lower.
4. INSTALLATION & TEST

9
■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.
·Make sure that the hose is not twisted. ·Avoid submerging the end of the hose.

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SOFTENER
MAX
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 heating Check the automatic Check the water supply.
function. reverse rotation.
Check the drain and spin
Press the Water removal
functions.
START/PAUSE button.

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5. OPERATION
•WM2350H*

12
• This display shows:
a) the estimated time remaining
in the cycle when operation.
b) an error code when an error
has been detected.
• Rotate the cycle selector knob
to select the cycle designed for
different types of fabric and
soil level.
• Use this button to
start/stop the
washer.
• Select a water temperature based on the type of load you are washing.
• To change the spin speed, press the Spin Speed button repeatedly
to cycle through available options.
• To change the soil level, press the Soil Level button repeatedly until
the desired setting is on.
• Prewash: Use this option for loads that need
pretreatment. It adds 16 minutes prewash and drain.
• Rinse + Spin: Use this option to rinse and then spin.
• EXTRA RINSE: Select this option to rinse and
spin a load separately from a regular cycle.
• DELAY WASH: Once you have selected the cycle
• WATER PLUS:Select this option to add extra
water to the wash and rinse cycles for superior
results, especially with large or bulky items
start of the wash cycle.
and other settings, press this button to delay the
.
• Use this button to turn
power On/Off.
CUSTOM PROGRAM, COLDWASH™
• COLDWASH™ : Use this function to wash without hot water and heating.
• CUSTOM PROGRAM allows you to store a customized wash cycle
for future use.
• Light whenever the door of the washer is locked.
• The door can be unlocked by pressing the Start/Pause
button to stop the washer.
5. OPERATION
EST. TIME REMAINING
DOOR LOCKED lamp
POWER button
START/PAUSE button
OPTION button
CYCLE SELECTOR Wash/temp., Spin speed, Soil Level

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6. WIRING DIAGRAM/PROGRAM CHART
* *
Cool-down **Approx.
(Minutes)
* Wash time is in minutes.
** The total working time will vary with the load size,
water temperature and ambient temperature.
Normal
Bulky
/Large
Hand Wash
/Wool
Baby Wear
25
98
51
57
55
40
111
40
20
13
18
70
WASH
1 2
1 2
INLET VALVE
WH
1 2 3 4 5 6
1 2 3
1 2 3
1 2 34
1 2 3 4
1 2 3 4
2 1
2 1
2 1
2 15 6
1 2 3 4 5 6
1 2 3 4 5 6
1 2 3 4
1 2 3 4
3 2 1
3 2 1
1 2 3
1 2 3
4
4
MOTOR PRESSURE
SENSOR
THERMISTOR
POWER
CORD
+HOUSING
3 2
3 2 1
1
1 2
1
U V W
2 3
3
1 2
1 2 3
3 4 3
4 3 2
2
1
1
1 2
1 2 3
3
5 4
5 4 3
3 2
2 1
1
aH bH
D
N
G
1 2 1 2 1 21 2
/
NOISE
FILTER
1 2 3
1 2 3
3 2 1
3 2 1
DOOR LOCK
4
SOLE
NOID
3 2 1
2345
/
ESUF ESUF

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7. TROUBLESHOOTING
7-1. BEFORE PERFORMING SERVICE
■Be careful of electric shock when disconnecting parts while troubleshooting.
■The voltage of each terminal is 120 V AC and DC when the unit is plugged in.
7-2. QC TEST MODE.
The washer must be empty and the controls must be in the off state.
1. Press the WASH/RINSE and SPIN SPEED buttons simultaneously.
2. Press the Power button, while the above condition. Then buzzer will sound twice.
3. Press the Start/Pause button repeatedly to cycle through the test modes.
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY
Number of times the
Start/Pause button
is pressed
Check Poin Display Status
None
1 time
2 times
3 times
4 times
5 times
6 times
7 times
8 times
9 times
10 times
11 times
Turns on all lamps and locks the door.
Tumble clockwise.
Low speed Spin.
High speed Spin.
Inlet valve for prewash turns on.
Inlet valve for main wash turns on.
Inlet valve for hot water turns on.
Inlet valve for bleach turns on.
Tumble counterclockwise.
Water Temperature (Thermistor)
Drain pump turns on.
Off
rpm (42~50)
rpm (55~65)
rpm (105~115)
Water level frequency (225~265)
Water level frequency (225~265)
Water level frequency (225~265)
Water level frequency(225~265)
rpm (42~50)
Water Temperature [°C]
Water level frequency (225~265)
•Press the CUSTOM PROGRAM and PRE-WASH buttons simultaneously.
A display indicating 41 means a water level frequency of 24.1 kHz.
The digits indicate the water level frequency.

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7-4. ERROR DISPLAY
•If you press the START/PAUSE button when an error is displayed, any error except『』will
disappear and the machine will go into the pause status.
•In case of『』,『』,『』if 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 of『』, 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
HEATING
ERROR

16
ERROR SYMPTOM CAUSE
• The connector (3-pin, male, white) in the MOTOR
HARNESS is not connected to the connector
(3-pin, female, white) of STATOR ASSEMBLY.
• The electric contact between the connectors
(3-pin, male, white) in the MOTOR HARNESS
and 4-pin, female, white connector in the MAIN PWB
ASSEMBLY is bad or unstable.
• The MOTOR HARNESS between the STATOR
ASSEMBLY and MAIN PWB ASSEMBLY is cut (open
circuited).
• The hall sensor is out of order/defective.
8
9
LOCKED
MOTOR
ERROR
•
The washer experienced a power failure.
POWER
FAILURE
• EEPROM is out of order.
※Displayed only when the START/PAUSE button is first
pressed in the QC Test Mode.
10
EEPROM
ERROR

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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

18
SYMPTOM GUIDE FOR SERVICE CALL
Door error
Drain trouble
Was the load too large?
Visit to service.
Visit to service.

19
SYMPTOM GUIDE FOR SERVICE CALL
Suds overflow from the
appliance.
(In this condition, wash and
spin do not operate normally)
;-5
;-5
;-5
;-5
SOFTENER
MAX
Is a HE (High Efficiency) 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.
󰁋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.