LG WM2277H Series User manual

100
WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
MODEL: WM2277H*/WM2077CW/
WM2177H*/WM2677H*M
CAUTION
Website: http: //www.LGEservice.com
E-mail: http: //www.LGEservice.com/techsup.html
!

101
APR. 2004 PRINTED IN KOREA
P/No.:3 2 ER301 Y

2
CONTENTS
1. SPECIFICATIONS .........................................................................................................................3
2. FEATURES & TECHNICAL EXPLANATION ................................................................................ 4
3. PARTS IDENTIFICATION ............................................................................................................ 7
4. INSTALLATION & TEST ...............................................................................................................
5. OPERATION ................................................................................................................................11
6. WIRING DIAGRAM/PROGRAM CHART.....................................................................................14
7. TROUBLESHOOTING.................................................................................................................17
7-1. BEFORE PERFORMING SERVICE ...................................................................................17
7-2. QC TEST MODE.................................................................................................................17
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY ......................................................17
7-4. ERROR DISPLAY ...............................................................................................................1
. ERROR DIAGNOSIS AND CHECK LIST ....................................................................................20
-1. DIAGNOSIS AND SOLUTION FOR ABNORMAL OPERATION ........................................20
-2. FAULT DIAGNOSIS AND TROUBLESHOOTING ..............................................................23
9. DISASSEMBLY INSTRUCTIONS ...............................................................................................32
10. EXPLODED VIEW .....................................................................................................................41
10-1. CABINET & CONTROL PANEL ASSEMBLY....................................................................41
10-2. DRUM & TUB ASSEMBLY................................................................................................42
10-3. DISPENSER ASSEMBLY .................................................................................................43

3
1. SPECIFICATIONS
ITEM WM2677H*M WM2277H* WM2177H* WM2077CW
COLOR W: BLUE WHITE, B: BLACK PEARL, S: TITANIUM
POWER SUPPLY AC 120 V, 60 Hz
PRODUCT WEIGHT 190 lbs. ( 6 kg)
WASHING 2 0 W
DRAIN MOTOR 0 W
WASH HEATER 1000 W –
WASH 42 rpm
SPIN 0-1320 rpm 0-1100 rpm 0-1000 rpm
CYCLES 9 7
WASH/RINSE TEMPERATURES 5
SPIN SPEEDS 5
OPTIONS Prewash, Stain Cycle, Quick Cycle, Extra Rinse, Rinse+Spin, Delay Wash
CUSTOM PROGRAM Incorporated
WATER CIRCULATION Incorporated –
OPERATIONAL WATER PRESSURE 4.5-145 psi (30-1000 kPa)
CONTROL TYPE Electronic
WASH CAPACITY [cu. ft.] 3.32 (3. 3 IEC) 3.22 (3.72 IEC)
DIMENSIONS 27” (W) X 29 3/4” (D) X 3 11/16” (H), 5013/16” (D, door open)
DELAY WASH up to 19 hours up to 12 hours up to 9 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 Incorporated –
ELECTRIC POWER
CONSUMTION
REVOLUTION SPEED

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 Extra Large Door Opening
Tilted drum and extra large door opening make it possible
to load and unload easily.
Water Circulation
Spray detergent solution and water onto the load repeatedly.
Clothes are soaked more quickly and thoroughly during the wash cycle.
Detergent suds are eliminated more easily by the water shower
during rinse cycle. The water circulation system uses both
water and detergent more efficiently.
RollerJets
Washing ball enhances wash performance and reduces
damage to clothing. The jets spray and help tumble clothes to enhance
washing performance while maintaining fabric care.
Automatic Wash Load Detection
Automatically detects the load and optimizes the washing time.
Built-in Heater
Internal heater automatically heats the water to the optimum temperature
on selected cycles.
Child Lock
The Child lock feature prevents children from pressing any buttons
to change the settings during operation.
Using the RLM (Remote Laundry Monitor)
The RLM monitors status of your washer and/or dryer. You can plug the
display unit into any power outlet in your home.
The RLM Display Unit can be purchased separately for this washer.
추가선택, 예약,

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

울
란제리
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.
White 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. 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 lights and all buttons are disabled except the Power button. You can
lock the washer while it is operating.
2- . WATER CIRCULATION
When Washing and Rinsing function of shower at the upper part of Gasket.
When Washing, it continuously operates for 3 minutes and intermittently.
When Rinsing, it continuously operates after completion of water supply at first rinse.

7
3. PARTS IDENTIFICATION
ACCESSORIES
울
란제리 란제리
Water Circulation Nozzle
A
Safety Cover (PLC Moderm)

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.

10
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.

11
5. OPERATION
WM2277H*/WM2177H*
WM2077CW
WM2677H*M

12
• Use this button to turn the power
On/Off.
• Rotate the Cycle selector
knob to select the cycle
designed for different
types of fabric and soil
levels.
• Allows you to store a customized wash cycle for future use.
• To create a Custom Program:
1) Select a cycle.
2) Select the other desired Wash/Rinse Temp., Spin Speed, Soil Level.
3) Select the desired Options.
4) Press and hold the Custom Program button for 3 seconds (2 beep sounds).
The Custom Program is now stored for future use.
• To reuse the program, select Custom Program and press Start/Pause .
• Use this option to prevent
Press and hold PRE WAS
lock/unlock control.
• When Child lock is set, CH
buttons are disabled exce
can lock the washer while
• Use this button to Start/
Stop the washer. • Se
lo
• To
bu
op
• To
bu
• Pr
• This display shows:
a) the estimated time remaining in the
cycle when operating.
b) an error code when an error has been
detected.

13
ent unwanted use of the washer.
WASH button for 3 seconds to
CHILD LOCK lights and all
xcept the Power button. You
hile it is operating.
•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: This option provides an additional rinse cycle.
• Stain Cycle: Adds time to the wash and rinse cycles for better
stain removal. Automatically provides a rinse.
• Quick Cycle: The Quick cycle offers a quick cycle time.
• Lights whenever the door
of the washer is locked.
• The door can be unlocked
by pressing the
Start/Pause button to
stop the washer.
• Allows the start of any cycle
to be delayed for 1~12
hours.
• 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.
• Press repetedly to adjust the volume of the Beeper.
• These lights show which portion of the
cycle the washer is operating.

14
6. WIRING DIAGRAM/PROGRAM CHART
BN
BK WH
GN
/
YL
GN
/
YL
RD
GN
BL
WH
NOISE
FILTER
POWER
CORD
123
123
123
123
BN
BK WH
GN
/
YL
GN
/
YL
GN
BL
WH
NOISE
FILTER
POWER
CORD
123
123
123
123
RD
WM2277H*
WM2077CW

15
BN
BK WH
GN
/
YL
GN
/
YL
RD
GN
BL
WH
NOISE
FILTER
POWER
CORD
123
123
123
123
INLET VALVE
DISPLAY PWB
10 11 12 67 923451
10 11 12 67 923451
10 11 12 13 67 923451
10 11 12 13 67 923451
10 11 12 67 923451
10 11 12 67 923451
10 11 12 13 67 923451
10 11 12 13 67 923451
10 11 12 13 67 923451 10 11 12 67 923451
3214
321
321
321
4
MAIN PWB
BN
BK WH
GN
/
YL
GN
/
YL
GN
BN
RD BL NA BL
BK
BK BK BK BK
BK
VT SB ORSB BLBL RD RD BKBL
WHWH
SB BL YL YL YL YL YL RD RD BL GY
YL RD BL
BL
YL
RD BL
BL WH
WHWH
WH
RD BL WH
GY
RD
BL WH
GY
WH
RD
GN
/
YL
123456
123
213
213 4
2314
231
123
1234
123
123
321
321
321
32156
123456
1234
4321
432156
NA
RD
CON3 CON2 CON1
CON2 CON1
RD
WH
10 11 67 923451
CON3
NA
NA WHBLBL YL
1234
1234
BLRD WH
WH
WH
BK
BK
YL
RD
BK
RD YL BL
BK BK SB
SB
NA
BN
WH
NOISE
FILTER
PLC MODEM
DOOR LOCK SWITCH
DRAIN PUMP
HOT
VALVE
PRE
WASH
MAIN
WASH
BLEACH
CIRCULATION PUMP
MOTOR
BALL
SENSOR
PRESSURE
SWITCH
THERMISTOR
POWER
CORD
#250TERMINAL
(NOTES)
3PIN CONNECTOR
4PIN CONNECTOR
5PIN CONNECTOR
6PIN CONNECTOR
12PIN CONNECTOR
13PIN CONNECTOR
#250 TERMINAL+HOUSING
1PIN CONNECTOR
2PIN CONNECTOR
RING TERMINAL GROUND
4
P
T
C
SOLE
NOID
P
T
C
321
234
32
321
1
12
1
UVW
212
12
3
3
13
132
2
12
123
3
12
123
34
4
23
231
14
4
5
5
21
213
3
5
123
123
123
123
Ha Hb
GND
FUSE
WASHING
HEATER
12 12 12 12
7
6
5
4
3
2
1
1
2
WM2177H*
WM2677H*M

16
**
Cool-down **Approx.
(Minutes)
* Wash time is in minutes.
** The total working time will vary with the load size,
water temperature and ambient temperature.

17
7. TROUBLESHOOTING
7-1. BEFORE PERFORMING SERVICE
Be careful of electric shock when disconnecting parts while troubleshooting.
The voltage of each terminal is 110/120 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 SPIN SPEED and SOIL LEVEL 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
Press the
SPIN SPEED and SOIL LEVEL button simultaneously.
So, for example a display indicating 241: a Water level frequency of 241 x.1 kHz
= 24.1 kHz
The digits indicate the water level frequency ( x.1 kHz ).
Check Point Display Status
None Turns on all lamps and locks the door.
1 time Tumble clockwise. rpm (40~50)
2 times Low speed Spin. rpm
3 times High speed Spin. rpm
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 bleach turns on. Water level frequency (25~65)
times Tumble counterclockwise. rpm (40~50)
9 times
Heater turns on for 3 sec. Water temperature
10 times Circulation pump turns on.
Water level frequency (25~65)
11 times
Drain pump turns on. Water level frequency (25~65)
12 times
Power off and unlock the door. Turn off all lamps.
Number of times the
Start/Pause button is pressed
: WM2277H*/WM2177H*
: WM2677H*M
1)
:
WM2077CW

18
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 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

19
ERROR SYMPTOM CAUSE
OVER
CURRENT
ERROR
•
MAIN PWB ASSEMBLY is out of order.
•
Winding in the STATOR ASSEMBLY is short-circuited.
• 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
• Loose Ball Sensor Connector.
• Ball Sensor is out of order.
※Displayed only when the START/PAUSE button is first
pressed in the QC Test Mode.
10
BALL SENSOR
ERROR
• The washer experienced a power failure.
12
POWER
FAILURE
• EEPROM is out of order.
※Displayed only when the START/PAUSE button is first
pressed in the QC Test Mode.
11
EEPROM
ERROR