LG W3S1 Series User manual
CONFIDENTIAL
LAUNDARY CENTER
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
CAUTION
MODELS : W3S1*
Any reproduction, duplication, distribution (including by way of email, facsimile or other electronic means), publication, modification,
copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the
LG Electronics entity from which you received this Service Manual. The material covered by this prohibition includes, without limitation,
any text, graphics or logos in this Service Manual.
Copyright © 2019 - 2021LG Electronics Inc. All rights reserved. Only training and service purposes.
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IMPORTANT SAFETY NOTICE
RECONNECT ALL GROUNDING DEVICES
The information in this service guide is intended for use by individuals possessing skill and experience in electrical,
electronic, and mechanical appliance repair. Any attempt to repair a major appliance may result in injury to persons,
and property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor
can it assume any liability in connection with its use.
To avoid injury to persons, disconnect power before servicing this product. If electrical power is required for
diagnosis or test purposes, disconnect the power immediately after performing the necessary checks.
If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for
service, they must be returned to their original position and properly fastened.
WARNING !
WHAT TO DO IF YOU SMELL GAS:
■ Do not try to light a match, or cigarette, or
turn on any gas or electrical appliance.
■ Do not touch any electrical switches. Do not
use any phone in your building.
■ Clear the room, building, or area of all
occupants.
■ Immediately call your gas supplier from a
neighbor’s phone. Follow the gas supplier’s
instructions carefully.
■ If you cannot reach your gas supplier, call
the re department.
IMPORTANT
Electrostatic Discharge (ESD) Sensitive Electronics
ESD problems are present everywhere. ESD may damage or weaken the electronic control assembly. The new
control assembly may appear to work well after repair is nished, but failure may occur at a later date due to ESD
stress.
■ Use an anti-static wrist strap. Connect wrist strap to green ground connection point or unpainted metal in the
appliance.
- OR -
Touch your nger repeatedly to a green ground connection point or unpainted metal in the appliance.
■ Before removing the part from its package, touch the anti-static bag to a green ground connection point or
unpainted metal in the appliance.
■ Avoid touching electronic parts or terminal contacts; handle electronic control assembly by edges only.
■ When repackaging the failed electronic control assembly in an anti-static bag, observe the instructions above.
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CONTENTS
1. SPECIFICATIONS............................................................................................................................................................................. 4
2. FEATURES & TECHNICAL EXPLANATION.................................................................................................................................... 5
2-1. Features...................................................................................................................................................................................... 5
2-2. Neuro Fuzzy Washing Time Optimization (Washer) ................................................................................................................... 6
2-3. Water Level Control .................................................................................................................................................................... 6
2-4. Door Control................................................................................................................................................................................ 6
3. PARTS IDENTIFICATION ................................................................................................................................................................. 8
4. INSTALLATION & TEST................................................................................................................................................................. 10
5. OPERATION ................................................................................................................................................................................... 13
5-1. Control Panel Features............................................................................................................................................................. 13
5-2. Cycle Guide(Washer)................................................................................................................................................................ 14
5-3.Cycle Guide (Dryer) ................................................................................................................................................................... 17
5-4. Special Functions...................................................................................................................................................................... 19
6. TEST MODE.................................................................................................................................................................................... 20
6-1. Safety Caution .......................................................................................................................................................................... 20
6-2. Load Test Mode (Washer)......................................................................................................................................................... 20
6-3. How To Check The Water Level Frequency.............................................................................................................................. 20
6-4. Diagnostic Test (Dryer) ............................................................................................................................................................. 21
6-5. Installation Test (Duct Check) ................................................................................................................................................... 32
7. TROUBLESHOOTING.................................................................................................................................................................... 35
7-1. Safety Caution .......................................................................................................................................................................... 35
7-2. Error Mode Summary................................................................................................................................................................ 35
7-3. Troubleshooting With Error (Washer) ....................................................................................................................................... 38
7-4. Troubleshooting Else (Washer)................................................................................................................................................. 42
7-4. Troubleshooting Else (Dryer) .................................................................................................................................................... 47
7-5. Troubleshooting Not Drying (Dryer) .......................................................................................................................................... 54
7-6. Troubleshooting for ow sensor dryer....................................................................................................................................... 74
7-7. Before using the Tag On function.............................................................................................................................................. 75
8. COMPONENT TESTING informat (WASHER) .............................................................................................................................. 79
8-1. Filter Assembly (Line Filter) ...................................................................................................................................................... 79
8-2. Door Lock Switch Assembly...................................................................................................................................................... 80
8-3. Stator Assembly ........................................................................................................................................................................ 82
8-4. Pump Motor Assembly.............................................................................................................................................................. 83
8-5. Inlet Valve Assembly ................................................................................................................................................................. 84
8-6. Thermistor Assembly ................................................................................................................................................................ 85
8-7. Component Tesing Information (Dryer)..................................................................................................................................... 87
9. GAS SETTING ................................................................................................................................................................................ 90
9-1.Change Gas Setting (Natural Gas, Propane Gas)..................................................................................................................... 90
9-2. Gas Valve Flow ......................................................................................................................................................................... 91
10. DISASSEMBLY INSTRUCTIONS (WASHER).............................................................................................................................. 92
10. DISASSEMBLY INSTRUCTIONS (DRYER) ............................................................................................................................... 102
11. EXPLODED VIEW....................................................................................................................................................................... 114
12. WIRING DIAGRAM..................................................................................................................................................................... 122
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1. SPECIFICATIONS
Model W3S1CVK2*
Name LAUNDARY CENTER
Power supply
WASHER : 120V, 60Hz, 11A
DRYER(ELEC) : 120/240V, 60Hz, 26A, 22.5lb / 120/208V, 60Hz, 23A, 22.5lbx
DRYER(GAS) : 120V, 60Hz, 13A, 22.5lb
Size 27 in (W) X 30 ⅜ in (D) X 74 ⅜ in (H), 55 in (D with door open)
70 cm (W) x 77 cm (D) x 189 cm (H), 139.6 cm (D with door open)
Capacity
- Washer : 4.5 cu.ft. (DOE)
- Dryer : Steam cycle - IEC 7.4 cu.ft. (8 lb/3.6 kg)
Normal cycle - IEC 7.4 cu.ft. (22.5 lb/10.2 kg)
Weight Gas : 314.3 lb (142.6kg) - 327.1 lb (148.4 kg)
Electric : 311.6 lb (141.3 kg) - 323.7 lb (146.8 kg)
To reduce the risk of injury you must 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, 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 (Washer)
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 (Washer)
Automatically detects the load and optimizes the washing time.
■Control Lock
The control lock prevents children from pressing any button to change the settings
during operation.
■SMART DIAGNOSIS™
Should yo u experience any technical difc ulty with your washing machine, is capable of
producing multiple distinct different motions for optimal washing performance with very little noise
and vibration. The motor assembly also contains fewer moving parts, thus resulting in fewer
repairs.
How to USE?
Press and hold the Steam + Extra Rinse(Washer) / Steam + Reduce Static (Dryer) buttons for 3
seconds or until the audible tones start. Hold the smartphone mouthpiece
to the logo until the data transfer is complete.
■Flow Sensor (Dryer)
This FlowSenseTM function detects the clogging or blocking of ducts.
Clogged duct vents or hoses decrease efciency in drying cloths.
Clogged vents can also cause re. This function alerts you to the need of cleaning the duct. When
the alarm about Duct clogging is displayed, clean the duct or call a servicer to clean them.
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2-2. Neuro Fuzzy Washing Time Optimization (Washer)
2-3. Water Level Control
2-4. Door Control
To get the best washing performance, optimal time is determined by the water temperature, the selected washing
temperature, and the size of the load.
● 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.
● 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.
water
temperature
selected
washing
temperature
NEURO
FUZZY
SENSING PROCESSING
DETERMINATION
EFFECT
the best
washing
performance
washing time
rinsing time
spin rhythm, time
load
size
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■ The Washer Door Can Not Be Opened
■ Control Lock
■ Flow Sensor (Dryer)
● While the machine is in operation.
● After a power failure, and the machine has been unplugged during operation.
● While the Door Lock light is on.
● While the motor is rotating, even though the operation may be paused.
● The Control Lock is used to restrict unwanted users from operating the machine.
Press and hold Soil(Washer)/Time Dry(Dryer) for 3 seconds to either lock or unlock the machine’s controls.
● Only the Power button remains active while the Control Lock feature is engaged.
● The Control Lock can be activated while the machine is already in operation
● The Control Lock will remain engaged until the end of the current cycle. To disengage the Control Lock , press
and hold Soil(Washer)/Time Dry(Dryer) for 3 seconds.
The FlowSenseTM display consists of LED lamp. The display has only two possible displays as only two possible
displays as shown here.
➀No Response.
➁ LED; turned on.
Flow Sensor Function
LED; turned on :
RESTRICTED
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3. PARTS IDENTIFICATION
■ Parts
Control Panel
Lint Filter
Dryer Drum
Dryer Door
Dryer Door Magnet
Detergent Dispenser Drawer
Washer Door
Washer Drum
Washer Door Magnet
Drain Hose
Drain Pump Filter
Drain Pump Filter Cover
Leveling Feet
Power Cord(for Dryer gas models)
Terminal Block Access Panel(for electric models)
Cold Water Inlet (for Dryer System)
Exhaust Duct Outlet
Gas connection(for gas models)
Hot and Cold Water Inlets
Shipping Bolts
Drain Hose
Power Cord (for washer)
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■ Accessories
Included Accessories
Required Accessory (sold separately)
Non-skid Pads Elbow Bracket (for securing drain hose)
Hole Caps Y connector
Wrench Drying Rack (on some models)
Tie Strap
Hot and Cold Water Hoses for Washer Short Cold Water Hoses
Cold Water Hose for Dryer Tie Straps
•Required accessory is sold separately. It can be ordered through LG Website.
US: www.lg.com/us
NOTE
•Contact LG Customer Service at 1-800-243-0000 (1-888-542-2623 in Canada) if any accessories are missing.
•For your safety and for extended product life, use only authorized components. The manufacturer is not responsible
for product malfunction or accidents caused by the use of separately purchased unauthorized components or parts.
•The images in guide may be different from the actual components and accessories, and are subject to change by the
manufacturer without prior notice for product improvement purposes.
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4. INSTALLATION & TEST
Before servicing, ask the customer what the trouble is.
When installing or repairing the washer, put on long gloves and safety glasses.
Check the setup (power supply is 120 VAC, remove the transit bolts, level the appliance, etc.)
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
BOLTS
INSTALL THE APPLIANCE
ON A FLAT AND FIRM SURAFCE
ADJUST THE
LEVELING
•Remove the 4 shipping bolts with
the supplied wrench.
※ Remove the lower bolts st. It is
easier that way.
•Keep the shipping bolts and spanner
for future use.
•Insert the 4 caps (provided) into the
hole.
•Turn the leveling feet to adjust
the appliance.
•Turn clockwise to raise;
counterclockwise to lower.
•Do not raise the front of the
appliance with a wood block
or similar object. Doing so can
cause serious injury or death.
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■HOW TO CONNECT THE WASHER INLET HOSE
■ CONNECT THE DRAIN HOSE
■ CONNECT POWER PLUG
※
The end of the drain hose should be placed less than 96” from the oor.
•Make sure that the hose is not twisted.
•Connect the power plug to the wall outlet.
•Avoid submerging the end of the hose.
•Avoid connecting several electric devices,
as doing so may cause a re.
•Verify that the rubber washer is inside of
the valve connector.
•Tighten the inlet hose securely to prevent
leaks. Install the inlet hose to correct
temperature water tap.
•Otherwise, it cause drips on the drawer
panel handle and drawer panel.
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■TEST OPERATION (WASHER)
Preparation for
washing.
Check the water heating
function.
Check the drain and spin
functions.
Press and hold the START/
PAUSE button.
Water removal
Check the automatic reverse
rotation.
Check the water supply.
Press the POWER button. Press and hold the START/
PAUSE button
•Connect the power plug to the
outlet.
•Connect the inlet hoses.
•Press the WASH/RINSE button and
the present temperature will be
displayed.
•ower off and the power on.
•Press the SPIN button.
•Press the START/PAUSE button.
•Check the spin and drain functions.
•Check if the drum rotates clockwise
and counterclockwise.
•Listen for a click to determine if the
door is unlocking.
•If SERVICE is needed during
check, remove the remaining water
by pulling out the hose cap.
•Check if water is supplied through
the detergent dispenser.
•Start/Pause button will operate
when you press and hold 1second,
not touch.
•Listen for a click to determine if the
door has locked.
NOTE
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5. OPERATION
5-1. Control Panel Features
WASHER
#W3S1CVK2*
- 14 -
5-2. Cycle Guide(Washer)
Turn the knob or press the button to select the desired cycle. When you select a wash cycle, the light for the
corresponding wash cycle will turn on.
•Whenever load weights are mentioned, assume 1 lb (0.45 kg) = 1 thick bath towel (dry).
•Temp erature: Cold > Cool > Warm > Very Warm > Hot
•Spin: No Spin > Low > Medium > Medium High > High
•Soil: Light > Limited > Normal > Moderate > Heavy
NOTE
Cycle Normal
Description
Use to wash all normal items such as cotton, linen, shirts, jeans or mixed loads, except delicate
fabrics such as wool or silk.
•Pressing the Start/Pause button without selecting a cycle will cause the Normal cycle to begin
immediately, using the default settings.
Wash Temp. Default: Warm Available: All
Spin Speed Default: Medium High Available: High, Medium High, Medium, Low
Soil Level Default: Normal Available: All
Cycle Bedding
Description
Suitable for washing blankets or bulky items which have difculty absorbing water, such as
pillows, blankets, comforters, sheets or pet bedding.
•Do not use this cycle to wash a mixed load of bedding and non-bedding items.
•Do not mix large/bulky items with smaller articles of clothing.
•Do not wash excessively large items. If large/bulky items do not t easily into the tub, there
may not be enough room for them to move during washing.
Wash Temp. Default: Warm Available: Very Warm, Warm, Cool, Cold
Spin Speed Default: Medium High Available: Medium, Low, No Spin
Soil Level Default: Normal Available: All
Cycle Delicates
Description Suitable for washing dress shirts/blouses, nylons, lingerie, or sheer and lacy clothes which
can easily be damaged. (less than 8 lb (3.63 kg))
Wash Temp. Default: Cool Available: Warm, Cool, Cold
Spin Speed Default: Medium Available: Medium, Low, No Spin
Soil Level Default: Normal Available: All
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Cycle Heavy Duty
Description
Suitable for washing heavily soiled laundry, such as cotton fabrics, using more powerful wash
motions.
•When washing large loads, there will be brief periods of 2 minutes or more without agitation.
These soak periods are part of the cycle’s design, and are normal.
Wash Temp. Default: Warm Available: All
Spin Speed Default: High Available: High, Medium High, Medium, Low
Soil Level Default: Heavy Available: All
Cycle Speed Wash
Description
Quickly washes lightly soiled clothing and small loads. For high wash and rinse efciency,
wash small loads of 2-3 lightly soiled garments. (less than 3 lb (1.36 kg))
•Use very little detergent in this cycle. To add an extra rinse, use the Extra Rinse option.
Wash Temp. Default: Warm Available: Very Warm, Warm, Cool, Cold
Spin Speed Default: High Available: All
Soil Level Default: Light Available: All
Cycle Downloaded(Rinse + Spin)
Description
Use a smartphone to download a specialized cycle to this cycle position.
•The default cycle is Rinse+Spin. This cycle is also available for download.
•Refer to the LG ThinQ application to see the cycles available for download.
Wash Temp. Default: Warm Available: Very Warm, Warm, Cool, Cold
Spin Speed Default: High Available: All
Soil Level Default: Light Available: All
Available Options
† This option is automatically included in the cycle and cannot be deselected.
NOTE
•If the Turbo Wash™ option is on, you cannot set the spin level to No Spin.
Cycle Steam Turbo Wash™ Extra Rinse Pre-wash
Normal ●●† ● ●
Bedding ●●●●
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Cycle Steam Turbo Wash™ Extra Rinse Pre-wash
Delicates ● ●
Heavy Duty ●●† ● ●
Speed Wash ● ●
Downloaded
default: Rinse+Spin ●
- 17 -
5-3.Cycle Guide (Dryer)
The appliance automatically sets the dryness level and temperature at the recommended setting for each cycle. The
estimated time remaining will be shown in the display.
•Temperature: Low > Medium Low > Medium > Medium High > High
•Dry Level: Damp > Less > Normal > More > Very
Cycle Normal
Description Use this cycle for drying all normal items such as cotton, linen, shirts, jeans or mixed
loads, except delicate fabrics such as wool or silk.
Temp. Default: Medium High Available: Medium High
Dry level Default: Normal Available: All
Cycle Bedding
Description Use this cycle for drying blankets or bulky items such as pillows, blankets, comforters, sheets or
pet bedding.
Temp. Default: Medium Available: Medium
Dry level Default: Normal Available: Very, More, Normal
Cycle Delicates
Description Use this cycle for drying dress shirts/blouses, nylons, lingerie, or sheer and lacy clothes which
can easily be damaged.
Temp. Default: Medium Low Available: Medium Low
Dry level Default: Normal Available: All
Cycle Heavy Duty
Description Use this cycle for drying heavy-duty clothes like jeans or garments that need extra drying.
Temp. Default: High Available: High
Dry level Default: Normal Available: All
Cycle Small Load
Description Use this cycle for drying light or small items. (up to 3 items)
Temp. Default: High Available: High
Dry level Default: Normal Available: Very, More, Normal
- 18 -
Cycle Downloaded (Perm. Press)
Description
Use a smartphone to download a specialized cycle to this cycle position.
•The default cycle is Perm. Press. This cycle is also available for download.
•Refer to the LG ThinQ application to see the cycles available for download.
Temp. Default: Medium Available: Medium
Dry level Default: Normal Available: All
NOTE
Available Options
† This option is automatically included in the cycle and can be deselected.
•The Energy Saver option is set to on by default. If you turn on the dryer and set the Energy Saver option to off, the
Energy Saver option is turned off when you turn on the dryer.
Cycle Steam Turbo Wash™ Extra Rinse Pre-wash
Normal ●† ● ●†
Bedding ●
Delicates ● ●
Heavy Duty ●●●
Small Load ●
Downloaded
default: Perm.
Press
●●●
- 19 -
5-4. Special Functions
The option buttons also activate special functions, including Wi-Fi, Remote, Control Lock, Sanitary, Tub Clean, Signal,
and Drum Light. Press and hold the option button marked with the special function for 3 seconds to activate.
Wi-Fi
Use this option for connecting to the internet through your home Wi-Fi network.
Remote
Use a smart phone to control your appliance remotely Also, it is possible to monitor your cycle
operation so you know how much time is left in the cycle.
Control Lock
Use this option to prevent unwanted use of the washer or to keep cycle settings from being changed
while the washer is operating. Press and hold the Control Lock button for 3 seconds to activate or
deactivate The Control Lock function The Control Lock indicator will be shown in the display. And all
buttons are disabled except the ON/OFF button.
NOTE: Control Lock lasts after the end of cycle. If you want to deactivate this function, Press and hold
the Control Lock button for 3 seconds.
Sanitary
This cycle washes clothes at a high temperature.
Tub Clean
This is a special cycle designed to clean the inside of the washer.
Signal
The washer plays a melody when the wash cycle is nished. The buttons make a sound each time
a button is pressed. Use this option to turn on/off the melody and button tones. Press and hold the
Signal button for 3 seconds.
Drum Light
The drum is equipped with a white LED light that illuminates when the washer is turned on. The light
turns off automatically after 4 minutes. If you press the Drum Light button during the stroke, the light
turns on and also turns off after 4 minutes.
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6. TEST MODE
6-1. Safety Caution
6-2. Load Test Mode (Washer)
6-3. How To Check The Water Level Frequency
There can be live AC and DC voltage on some terminals on the main board, even when the machine is turned off.
Be cautious to avoid electric shock when disconnecting parts while troubleshooting. (Wear Static Discharge gloves
when working.)
After cutting off the power when changing the PWB disconnecting, or reassembling.
Be careful static when handing the PWB assembly, and use Electro Static Discharge plastic pack when shipping or
storing it.
The washer must be empty and the controls must be in the off state.
1. Touch the "Extra Rinse" and "Soil" and then press the Power button.
2. Then buzzer will sound twice.
3. Press the Start/Pause button repeatedly to cycle through the test modes.
Press and hold the Soil and Delay Wasy button simultaneouslyl.
The digits indicate the water level frequency (x.1 kHz).
So, for example a display indicating 241 : a Water level frequency of 241 x. 1kHz
= 24.1 kHz
key press(time) Motion State Inspection Type Display Check Point
0LED inspection and door S/W operation Led full on → Data under the LED window
A buzzing sound when the control button
is pressed.
Initial characters→IU:XX (Main
version:XX)→Id:XX
(Display Version: XX)
1 Check WIFI Modem “go” or “---”
2Drum tub right turn (50 rpm) and tub lamp
on
42~50 Check drum action and noise
3 Low speed spin (600 rpm) 55~65 Check drum action and noise
4 High speed spin (Max rpm)and Check Wi
modem
90~120 Check drum action and noise
5Pre-wash Valve(Auto wash valve) operate 255 Check water level indication (225-255)
6Main wash valve operate 255 Check water level indication (225-255)
7 Hot valve operate 255 Check water level indication (225-255)
8 Bleech valve operate(Atomazing Valve) 255 Check water level indication (225-255)
9 Dry Valve operate 255 Check water level indication (225-255)
10 Steam valve operate 255 Check water level indication (225-255)
11 Drum tub left turn (50 rpm) and tub lamp on 42~50 Check drum action and noise
12 wash heater operate 23 water temperature detection check
13 Circular Pump operate and Door Lamp On 255 Check water level indication (225-255)
14 Drain Pump Operation and Auto Dispenser
Operation
255 Check water level indication (225-255)
15 Steam level sensor - Steam Model only
16 Steam heater operate - Steam Model only
17 Dry blast Fan / Dry Heater movement - Steam Model only
18 Modem Error Check Operate nE or nF
19 OFF All Led Off
※This error display LQC Test Mode only for Wi-Fi mo.del
There is a problem with the connection between display pcb and Wi-Fi module.
Please change this service part.
There is a problem Wi-Fi modu.le
Please change this service part.
There is no problem with Wi-Fi modu.le
This is wi- program version. Wi-Fi version can be cha.nge
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