LG WD14070D6 User manual

WASHING MACHINE
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS
CORRECTLY BEFORE OFFERING SERVICE.
BEFORE SERVICING THE WASHING MACHINE, UNPLUG THE POWER
CORD TO AVOID THE RISK OF AN ELECTRIC SHOCK.
WHEN SERVICING INTERNAL PARTS, USE ONLY SERVICE PARTS
SUPPLIED FROM LG.
AFTER SERVICING THE ELECTRIC WIRE, INSURE THAT INSULATION
TAPE IS APPLIED TO PREVENT AN ELECTRICAL SHORT.
MODEL : WD14070D6 / WD14070SD6
website : http://biz.lgservice.com
e-mail : http://LGEservice.com/techsup.html

2
CONTENTS
1. SPECIFICATION................................................................................................................................ 3
2. FEATURES & TECHNICAL EXPLANATION ..................................................................................... 5
2-1.FEATURES.................................................................................................................................. 5
2-2.DETERMINE WASHING TIME BY FUZZY LOGIC ..................................................................... 6
3. PARTS IDENTIFICATION ................................................................................................................. 7
4. INSTALLATION .................................................................................................................................. 8
5. OPERATION ................................................................................................................................... 14
6. WIRING DIAGRAM / PCB LAYOUT / PROGRAM CHART ............................................................ 18
7. TROUBLESHOOTING......................................................................................................................20
7-1.CHECK BEFORE SERVICE .................................................................................................... 20
7-2.LOAD TEST MODE .................................................................................................................. 20
7-3.HOW TO CHECK THE WATER LEVEL FREQUENCY ............................................................ 21
7-4.
HOW TO CHECK THE TEMPERATURE OF EACH THERMISTOR AT OPERATING CONDITION ...... 21
7-5.HOW TO CHECK THE VIBRATION SENSOR ......................................................................... 22
7-6.ERROR DISPLAY ..................................................................................................................... 23
7-7 TROUBLESHOOTING WITH ERROR CODES ....................................................................... 25
• IE (Water Inlet Error) .............................................................................................................. 25
• UE (Unbalance Error) ............................................................................................................. 26
• OE (Water Outlet Error) .......................................................................................................... 27
• FE (Overflow Error) ................................................................................................................ 29
• PE (Pressure Sensor S/W Error) ............................................................................................ 30
• dE (Door Open Error) ............................................................................................................. 31
• tE (Thermistor (Heating) Error) ............................................................................................... 32
• LE (Motor Locked Error) ......................................................................................................... 33
• AE (Water Leakage) ................................................................................................................35
8. TROUBLESHOOTING WITHOUT ERROR CODES ...................................................................... 36
• No Power ................................................................................................................................ 36
• Vibration & Noise during spin ................................................................................................. 37
• Detergent & Softener does not flow in .................................................................................... 38
• Water Leak ............................................................................................................................. 39
9. PART INSPECTION ........................................................................................................................ 41
9-1 FILTER ASSEMBLY(LINE FILTER) .......................................................................................... 41
9-2 DOOR LOCK SWITCH ASSEMBLY.......................................................................................... 42
9-3 STATOR ASSEMBLY ................................................................................................................ 44
9-4 PUMP MOTOR ASSEMBLY...................................................................................................... 47
9-5 INLET VALVE ASSEMBLY ........................................................................................................ 48
10. DISASSEMBLY INSTRUCTIONS ................................................................................................. 49
11. EXPLODED VIEW AND PART LIST ............................................................................................. 63

3
1. SPECIFICATION
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
ITEM WD14070SD6
POWER SUPPLY
PRODUCT WEIGHT
OPERATION WATER PRESSURE
CONTROL TYPE
WASH CAPACITY
DIMENSION
WASH PROGRAM
RINSE
DOOR SWITCH TYPE
WATER LEVEL
RESERVATION
SENSING LAUNDRY AMOUNT
FUZZY LOGIC
DISPLAY REMAINING TIME
ERROR DIAGNOSIS
POWER AUTO OFF
CHILD LOCK
AUTO RESTART
TIME SAVE
ELECTRICITY
CONSUMPTION
WASHING
SPIN
DRAIN MOTOR
STEAM HEATER
WASH HEATER
REVOLUTION
SPEED
WASH
SPIN No Spin / 400 / 800 / 1000 / 1400
46rpm
100 ~ 1000 kPa (1.0 kgf/cm2~ 10.0 kgf/cm2)
Electronic
Refer to the Rating Label
600mm(W)x640mm(D)x850mm(H)
Cotton, Cotton Eco, Mix, Easy Care, Duvet, Allergy Care,
Refresh, Sports Wear, Dark Wash, Delicate, Wool,
Intensive 60, Quick 30, Silent Wash
Normal, Rinse
+, Rinse ++, Rinse ++Hold, Normal+Hold
PTC+Solenoid
by Pressure Sensor S/W
From 3 hours to 19 hours
Adapted
Adapted
Adapted
10 items
Adapted
Adapted
Adapted
Adapted
190W
380W
30W
1200W
2120W
220V-240V~, 50Hz
70kg

4
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
ITEM WD14070D6
POWER SUPPLY
PRODUCT WEIGHT
OPERATION WATER PRESSURE
CONTROL TYPE
WASH CAPACITY
DIMENSION
WASH PROGRAM
RINSE
DOOR SWITCH TYPE
WATER LEVEL
RESERVATION
SENSING LAUNDRY AMOUNT
FUZZY LOGIC
DISPLAY REMAINING TIME
ERROR DIAGNOSIS
POWER AUTO OFF
CHILD LOCK
AUTO RESTART
TIME SAVE
ELECTRICITY
CONSUMPTION
WASHING
SPIN
DRAIN MOTOR
WASH HEATER
REVOLUTION
SPEED
WASH
SPIN No Spin / 400 / 800 / 1000 / 1400
46rpm
100 ~ 1000 kPa (1.0 kgf/cm 2~ 10.0 kgf/cm2)
Electronic
Refer to the Rating Label
600mm(W)x640mm(D)x850mm(H)
Cotton, Cotton Eco, Mix, Easy Care, Duvet, Baby Care,
Skin Care, Sports Wear, Dark Wash, Delicate, Wool,
Intensive 60, Quick 30, Silent Wash
Normal, Rinse
+, Rinse ++, Rinse ++Hold, Normal+Hold
PTC+Solenoid
by Pressure Sensor S/W
From 3 hours to 19 hours
Adapted
Adapted
Adapted
10 items
Adapted
Adapted
Adapted
Adapted
190W
380W
30W
2120W
220V-240V~, 50Hz
70kg

5
2. FEATURES & TECHNICAL EXPLANATION
2-1. FEATURES
Direct Drive System
The advanced Brushless DC motor directly drives the drum without belt and pulley.
Built-in Heater
Internal heater automatically heats the water to the best temperature on selected cycles.
Child Lock
The Child lock prevents children from pressing any Buttons to change the settings during
operation.
More economical by Intelligent Wash System
Intelligent Wash System detects the amount of load and water temperature, and then
determines the optimum water level and washing time to minimize energy and water
consumption.
Low noise speed control system
By sensing the amount of load and balance, it evenly distributes load to minimize the
spinning noise level.
Inverter Direct Drive system
The advance Brushless DC motor directly drives the drum without belt
and pulley.
6 motion
Washer is able to perform various drum actions or a combination of different actions
depending on the wash program selected.
Combined with a controlled spin speed and the ability of the drum to rotate both
left and right, the wash performance of the machine is greatly improved, givong
you perfect results every time.

6
2-2. DETERMINE WASHING TIME BY FUZZY LOGIC
To get the best washing performance optimal time is determined by sensing the water
temperature, selected washing temperature and laundry amount.
2-3. WATER LEVEL CONTROL
This model adopts a pressure sensor which can sense the water level in the tub.
Water supply is stopped when the water level reaches the preset level, then washing program proceeds.
Spinning does not proceed until the water in the tub reduces to a certain level.
water
temperature
washing time
rinse time
the best
washing
performance
spin rhythm, time
laundry
amount
FUZZY
LOGIC
selected
washing
temperature
SENSING EFFECT PROCESSING DETERMINATION
2-4. THE DOOR CAN NOT BE OPENED
While program is operating.
While Door Lock light is on.

7
3. PARTS IDENTIFICATION
Drawer
Drum
Door
Drain Hose
Adjustable Feet
Transit Bolts
Control Panel
Power Plug
Drain Pump Filter
Drain Plug
Lower Cover Cap
If the supply cord is damaged,
it must be replaced by the
manufacturer or its authorized
service technician in order to
avoid a hazard.
ACCESSORIES
Inlet hose(1EA) Option : Hot / Cold(2EA) Spanner

8
4. INSTALLATION
INSTALLATION
The appliance should be installed as follows.
Check the conditions of installation area.
1. Check level ground.
On raised foundations or upper level homes, the vibrations can be caused by the type of flooring.
It may be necessary to move the machine to a different area in the home or have the floor
reinforced to properly support the operation of the unit.
2. Check for humidity or any foreign objects under the feet.
Clean the floor, there should be no foreign objects under the feet.
If the unit has foreign objects underneath the feet, this will prevent the unit from being leveled properly
and will cause vibrations and slipping.
Remove any foreign objects, if any from underneath the machine and level unit properly.
See below for examples of foreign objects.
1
Open the box and check appliance condition.
2
horizontal
Carpet Paper Laminated
paper
Purchased
stopper
Base Packing
Washer
Spanner
1. Remove the cardboard box and styrofoam packing.
2. Lift the washing machine and remove the base packing.
3. Remove the tape securing the power supply cord and
drain hose.
4. Remove the inlet hose from the drum.
Keep the spanner provided for future use.

9
Use spanner to remove transit bolts.
3
Check the distance between the appliance and the wall.
4
The tap connection and hose connection must be parallel.
5
Transit Bolt
More than 2cm If the distance is less than 2cm,
the water supply hose will be
kinked or folded.
Unfasten
1. Unfasten the adapter ring plate and the 4 adapter retaining screws.
2. Push the adapter onto the end of the tap so that the rubber seal forms
a watertight connection. Tighten the adapter ring plate and the 4
screws.
3. Push the water supply hose vertically upwards so that the rubber
packing in the hose connects fully to the tap and then
tighten it by fastening clockwise.
• Water supply pressure must be between 100 kPa and 1000 kPa (1.0 ~ 10.0 kgf / cm
2
)
• Do not strip or crossthread when connecting inlet hose to the valve.
• If the water supply pressure is more than 1000 kPa, a decompression device should be installed.
• Periodically check the condition of the hose and replace the hose if necessary.
Type-A : Connecting Screw-type hose to tap with thread
• Fasten the hose connector onto water supply tap.
■Connecting water supply hose
Step1 : Check the rubber seal of the inlet hose
Step2 : Connect hose to water tap
• Two rubber seals are supplied with the water inlet hose.
They are used for preventing water leaks. Make sure the connection to
taps are sufficiently tight.
Upper
connector Rubber
packing
Plate
Water supply
hose
Fixing screw
Hose
connector
Rubber
seal
Type-B : Connecting Screw-type hose to tap without thread
1. Unfasten the 3 bolts with the spanner supplied.
2. Take out the 3 bolts along with the rubber bungs by slightly
twisting the bung.
3. Close the holes with the caps supplied.
Keep the transit bolts for future use.

10
Please use the horizontal tap
Horizontal tap Extension tap Square tap
1. Unfasten the adapter ring plate and the 4 adapter retaining
screws.
2. Remove the guide plate if the tap is too large to fit the
adapter.
3. Push the adapter onto the end of the tap so that the rubber
seal forms a watertight connection.
Tighten the adapter ring plate and the 4 screws.
4. Pull the connector latch plate down, push the inlet hose onto
the adapter, and release the connector latch plate.
Make sure the adapter locks into place.
After completing connection, if water leaks from the hose, repeat the same steps.
Use the most conventional type of faucet for water supply. In case the faucet is square or too big, remove the
guide plate before inserting the faucet into the adaptor.
Ring plate
Guide plate
Latch plate
Type-C : Connecting one touch type hose to tap without thread
Step3: Connect hose to washer
• Make sure that the hose is not kinked or crushed.
When your washer has two valves.
• The inlet hose with the red connector is for the hot water tap.
• If the washer has two valves, energy is saved by using the hot valve.
After connecting inlet hose to water tap, turn on the
water tap to flush out foreign substances (dirt, sand or
sawdust) in the water lines. Let water drain into a
bucket, and check the water temperature.

11
Connect Drain Hose.
6
Connect power plug.
7
If the drain hose is not installed properly, the unit will not drain properly.
This allows water to flow back into the unit which can cause odors.
Refer to owner’s manual for proper drain hose installation.
The odor could also be coming from the home’s drain to which the drain hose is attached.
In this type of drain hose installation, the odor could be coming from the standpipe.
This odor can come up the drain hose and into the unit.
Pour a cup or two of bleach or vinegar down the home drain
and let it sit for 24 hours before running another cycle.
This will help eliminate odor from the home drain.
If a cycle is started too soon after doing this, it will not help the issue.
Connect the power plug to the wall outlet. Avoid connecting several electric devices,
it may be the cause of a fire.
about 100 cm
about 145 cm
about 105 cm
Laundry tub
Max. 100cm
Max. 100cm
Retainer
Tie
strap
Hose
max. 100 cm

1212
Check the horizontality with a level (Gage).
8
Step 1
If washing machine legs are loose or not fully attached, then tighten with the spanner wrench.
Using the level, level the washing machine from front to back and side to side.
Step 2
Use the spanner wrench to adjust legs until level and try the Diagonal test.
Step 3
Perform a Rinse and Spin with some clothing in the machine.
To do this, put 2~3kg of clothing in the unit, turn on the unit, select the Rinse+Spin
and then start. When the unit reaches the spin cycle, check vibrations.
If the unit vibrates, adjust the leveling foot slightly until the vibration subside. (Repeat step 2)
Step 4
Tighten the lock nut up to lock the positioned leg.
Lower the foot until there is no gap between floor and foot.
And only use adjustment rubber when the gap is more than 10mm.
Place your right hand on the back, right corner and your left hand on the front,
left corner of the unit, then attempt to rock the unit from corner to corner.
Then, move your right hand to the front, right corner and your left hand to the
back, left corner and attempt to rock the unit from corner to corner.
If the unit is level, it will not rock. However, if the unit is not level, it will rock.
If the unit rocks, it will be necessary to adjust the leveling feet of the unit.
Adjust the foot on the front right corner.
How to perform a diagonal test:
A level
Lower
Tighten
Adjustable feet
Diagonal test
Loosen
Adjustable feet
Higher
Tighten
Adjustable feet
Lower
4620ER4002B
(Gray)
for Wooden floors
Rubber Cup
4620ER4002A
(Black)
for Tile floors
Lock nut
10mm
Adjustable bolt
Tighen the lock nut
Floor
No Gap
Floor
No Gap
Floor
Gap

13
Test operation
9
1Preparation
for
washing.
·Connect the power plug to the
outlet.
·Connect the inlet hose.
2Press the power button. 3Press the START/PAUSE
button.
6Check the water heating.
·Touch the Temp. and Pre
Wash button simultaneously
to check the present
temperature. Page 22
·Check if the drum rotates
clockwise and counterclockwise.
5
Check automatic reverse turn.
4Check the water supply.
·Check if water is supplied through
the detergent dispenser.
7Check the drain and spin
functions.
·Turn power off and then power on.
·Select the spin rpm
·Press the START PAUSE button.
·Check the spin and drain
functions.
·Turn power off and then power on.
·Listen for a click to determine if the
door is unlocking.
8Turn power off and open
the door.
9Water removal.
·If SVC is needed during check,
remove the remaining water by
pulling out the hose cap.
·In case of Coloreds program.

14
Rotate the  
 to select the cycle
designed for different
types of fabric and soil
levels.
Use this button to Start/
Pause the washer.
Time elay : Allows the start of any cycle to be delayed
for 3~19 hours.
Steam Wash : By pressing the Steam Wash button, if Steam
Function is selected, the Steam Wash button will light up.
Favorite : Favorite program allows you to store a
customized wash cycle for future use.
Pre Wash : Use this option for load that needs protreatment.
Adds 19minutes pre wash and drain.
Medic Rinse : For best results or for cleaner rinsing, you can choose
Medic Rinse option
Rinse + Spin : This can be helpful in preventing fresh stains from setting
in fabrics.
Time Save : This option can be used to reduce the time of a wash program.
To use this option press option button before wash program is started.
Intensive : If the laundry is heavily soiled, intensive option is effective.
Cycle Selector Additional programs
Start/Pause Option Button
Use this button to turn the
power  .
Power
5. OPERATION (F1495BDS(1~9))

15
Rinse, Temp. Button
Use this option to prevent unwanted
use of the washer. Press and hold
Spin button button for 3 seconds
to lock/unlock control.
When Child lock is set, CHIL LOCK
lights and all buttons are disabled
except the Power button. You can
lock the washer while it is operating.
The Beep on/off function can be set by pressing
and holding the Option2 and Rinse button
This display shows:
a) the estimated time remaining in the
cycle when operating.
EST. T ime remaining
Beep on/off
In case of abormal operation, error
indications are displayed.
(
)
¥ see troubleshooting
simultaneouly.
Tub Clean course can be set by
pressing and holding Rinse button
simultaneously.
Tub Clean is a special cycle to
clean the inside of the washer.
Tub Clean
Select water temperature based
on the load type.
By pressing the Rinse button, the
Rinse type can be selected.
Child Lock

16
Use this button to turn the
power  .
Rotate the  
 to select the cycle
designed for different
types of fabric and soil
levels.
Use this button to Start/
Pause the washer.
Time Delay : Allows the start of any cycle to be delayed
for 3~19 hours.
Crease Care : If you want to prevent creasing, select Crease
Care option.
Favorite : Favorite program allows you to store a
customized wash cycle for future use.
Pre Wash : Use this option for load that needs protreatment.
Adds 19minutes pre wash and drain.
Medic Rinse : For best results or for cleaner rinsing, you can choose
Medic Rinse option
Rinse + Spin : This can be helpful in preventing fresh stains from setting
in fabrics.
Time Save : This option can be used to reduce the time of a wash program.
To use this option press option button before wash program is started.
Intensive : If the laundry is heavily soiled, intensive option is effective.
Cycle Selector Additional programs
Power
Start/Pause
Option Button
(F1495BD(1~9))

17
The Beep on/off function can be set by pressing
and holding the Option2 and Rinse button
This display shows:
a) the estimated time remaining in the
cycle when operating.
EST. T ime remaining
Beep on/off
In case of abormal operation, error
indications are displayed.
)
¥ see troubleshooting
Tub Clean course can be set by
pressing and holding Rinse button
simultaneously.
Tub Clean is a special cycle to
clean the inside of the washer.
Tub Clean
Select a water temperature based
on the type of load you are
washing.
By pressing the Rinse button, the
Rinse type can be selected.
Rinse, Temp. Button
simultaneouly.
Use this option to prevent unwanted
use of the washer. Press and hold
Spin button 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.
Child Lock

1818
6. WIRING DIAGRAM / PCB LAYOUT / PROGRAM CHART
Wiring Diagram

19
PCB Layout (Main)
AG (Option)
AG SENSOR (Option)

20
Before servicing ask the customer what the trouble is.
Check the adjustments. (Power supply :220-240V~, Removal of transit bolts etc..)
Check the troubles referring to the troubleshooting.
Decide service steps referring to disassembly instructions.
Then, service and repair.
After servicing, operate the appliance to see whether it works OK or NOT.
7. TROUBLESHOOTING
7-1. CHECK BEFORE SERVICE
7-2. LOAD TEST MODE
1Touch and Hold ‘Option (2)’ & ‘Rinse’ buttons
and then press ‘Power’ button.
2The washer must be empty and the controls must be in the off state.
3Press Power with above two buttons pressed and then buzzer will sound.
4Press the Start/Pause button repeatedly to cycle through the test modes
F1495BDS(1~9), F1495BD(1~9)
1
2
3
4
5
6
Display Status Remark
Check PointNumber
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Turns on all light 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 steam turns on.
Tumble counterclockwise
Heater turns on for 3 sec.
Circulation pump turns on.
Drain pump turns on.
Sensor for steam
Steam heater turns on for 1.2 sec.
Off
PGM Version Information
rpm(42~50)
rpm (60)
rpm (130~140)
Water level frequency
Water level frequency
Water level frequency
Water level frequency
rpm
Water temperature
Water level frequency
Water level frequency
Water level frequency
AG Temperature
-
For Hot&Cold Model
For Steam Model
For Steam Model
For Steam Model