LG F4J8GNP2W 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 : F4J8GNP2W/F4J8FNP2W/F4J8FNP2S
WD1408NCW/WD1409NCW/WD1409NCE
website :http:/ / biz.lgservice.com
e- mail : http:/ / LGEservice.com/ techsup.html

CONTENTS
1. SPECIFICATIONS ............................................................................................................................. 3
2. FEATURES & TECHNICAL EXPLANATION ..................................................................................... 4
3. PARTS IDENTIFICATION ................................................................................................................. 6
4. INSTALLATION .................................................................................................................................. 7
5. OPERATION ................................................................................................................................... 12
6. WIRING DIAGRAM / PCB LAYOUT ................................................................................................ 17
7. TROUBLESHOOTING......................................................................................................................19
7-1.BEFORE PERFORMING SERVICE ......................................................................................... 19
7-2.LOAD TEST MODE .................................................................................................................. 19
7-3.HOW TO CHECK THE WATER LEVEL FREQUENCY ............................................................ 20
7-4.ERROR DISPLAY ..................................................................................................................... 21
7-5.TROUBLESHOOTING WITH ERROR ..................................................................................... 23
IE (Water Inlet Error).............................................................................................................. 24
UE (Unbalanced Error)........................................................................................................... 25
OE (Water Outlet Error).......................................................................................................... 26
FE (Over Flow Error).............................................................................................................. 28
PE (Pressure Sensor S/W Error) ............................................................................................ 29
dE2 (Door open Error).............................................................................................................. 31
dE1 (Door switch Error).............................................................................................................. 31
tE (Thermistor (Heating) Error)............................................................................................. 33
LE (Motor Lock Error)............................................................................................................ 36
8. TROUBLESHOOTING WITHOUT ERROR CODES ....................................................................... 38
Power Failure or no power.................................................................................................... 38
Vibration & Noise during spin................................................................................................. 39
Detergent & Softener does not flow in ................................................................................. 40
Water Leak ............................................................................................................................. 41
Smart function ..................................................................................................................... 43
9. PART INSPECTION ........................................................................................................................ 45
9-1.FILTER ASSEMBLY (LINE FI LTER) ......................................................................................... 45
9-2.DOOR LOCK SWITCH ASSEMBLY ......................................................................................... 46
9-3.STATOR ASSEMBLY ............................................................................................................... 48
9-4.
PUMP MOTOR ASSEMBLY ....................................................................................................... 49
9-5.INLET VALVE ASSEMBLY ....................................................................................................... 50
10. DISASSEMBLY INSTRUCTIONS .................................................................................................. 51
11. EXPLODED VIEW AND PART LIST .............................................................................................. 59

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
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 / 400 / 800 / 1000 / 1200 / 1400
46 rpm
100 ~ 800 kPa ( 1.0 kgf / cm 2~ 8.0 kgf / cm 2)
Electronic
Refer to the Rating Label
600 mm (W) x 610 mm (D) x 850 mm (H)
Cotton, Cotton Eco, Mix, Easy Care, Duvet, Hygiene, Baby Care,
Sports Wear, Wool Plus, Delicate, Heavy Stain, Silent Wash,
Quick 14, Download Cycle
Normal, Rinse+
PTC+S olenoid
by Pressure Sensor S/W
From 3 hours to 19 hours
Adapted
Adapted
Adapted
11 items
Adapted
Adapted
Adapted
Adapted
SMART Wi-Fi Function / Smart Diagnosis function (3.0)
190 W
380 W
30 W
2100 W
220 V - 240 V ~, 50 /60Hz
67 kg
F4J8GNP2W / F4J8FNP2W / F4J8FNP2S
WD1408NCW / WD1409NCW/ WD1409NCE

2. FEATURES & TECHNICAL EXPLANATION
2-1. Product Features
Inverter Direct Drive system
The advanced Brushless DC motor directly drives the drum without
belt and pulley.
Low noise speed control system
By sensing the amount of load and balance, it evenly distributes load
to minimize the spinning noise level.
Child Lock
The Child Lock prevents children from pressing any button to change
the settings during operation.
More economical with Intelligent Wash system
Intelligent Wash System detects the size of load and water temperature,
and then determines the optimum water level and washing time to
minimize energy and water consumption.
Turbo Clean
Wash the laundries in 1 hour with energy and water saving.
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, giving you perfect results every time.
Auto Restart
Auto Restart allows the program to restart all by itself in case of power
failure. It does from the stage where it stopped.
SmartDiagnosis™
Should you experience any technical difficulty with your washing
machine, it has the capability of transmitting data by phone to the
Customer Information Center. The call center agent records the data
transmitted from your machine and uses it to analyze the issue,
providing a fast and effective diagnosis.

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 reach 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.

3. PARTS IDENTIFICATION
Transit bolts (x 4)
Power plug
Drawer
Control panel
Drum
Door
Drain hose
Drain tube
Drain pump filter
Cover cap (Location may
vary depending on products)
Adjustable feet (x 4)
1
2
3
4
5
6
7
8
9
10
11
Accessories
Cold supply hose (1EA)
(Option: Hot (1EA)
Spanner Caps for covering
transit bolt holes
(Optional)
Anti–slip sheets (2 EA)
(Optional)
Elbow bracket for
securing drain hose
(Optional)
Tie strap (Optional)

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
This leveling (or spanner) wrench must
be used to remove the shipping bolts
and level the unit. This should be kept
for future use.

1. 2. 3.
1. 2. 3.

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 back flow into the unit which can cause odors.
Refer to Owner 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
min. 60cm
Max. 100cm
min. 60cm
Retainer
Tie
strap
Hose
min. 60 cm
max. 100 cm

Rubber Cup
Check the horizontality with a level (Gage).
8
Step 1
If washing machine legs are loose or not Screwed in, 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, watch for vibrations.
If the unit is vibrating, make small adjustments to the leg until they subside. (Repeat step 2)
Step 4
Tighten the lock nut against the base of the machine to lock the position leg.
Lower the foot until there is no gap between floor and foot.
And only use adjustment rubber when difference at the leg adjustment 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 side 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 under the hand that is on the front of the machine.
How to perform a diagonal test:
A level
Higher
Tighten
Adjustable feet
Diagonal test
Tighten
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