LG F14A8YD series 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 : F14A8YD(1~9) / S44A8YD
website : http://biz.lgservice.com
e-mail : http://LGEservice.com/techsup.html

2
CONTENTS
1. SPECIFICATIONS ............................................................................................................................. 3
2. FEATURES & TECHNICAL EXPLANATION ..................................................................................... 5
3. PARTS IDENTIFICATION ................................................................................................................. 7
4. INSTALLATION .................................................................................................................................. 8
5. OPERATION ................................................................................................................................... 14
6. WIRING DIAGRAM / PCB LAYOUT ................................................................................................ 18
7. TROUBLESHOOTING......................................................................................................................20
7-1.BEFORE PERFORMING 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.ERROR DISPLAY ..................................................................................................................... 22
7-6.TROUBLESHOOTING WITH ERROR ..................................................................................... 24
• 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
• dE (Door open Error) .............................................................................................................. 30
• tE (Thermistor (Heating) Error) ............................................................................................... 31
• LE (Motor Lock Error) ............................................................................................................. 32
• dHE (Dry Heater Error) .......................................................................................................... 34
• Dry Heater Trouble ................................................................................................................. 35
• Dry Fan Motor Trouble ........................................................................................................... 36
8. TROUBLESHOOTING OTHER ...................................................................................................... 37
• PE (Power Failure or no power) ............................................................................................. 37
• No power ................................................................................................................................ 38
• Vibration & Noise during spin ................................................................................................. 39
• Detergent & Softener does not flow in .................................................................................... 40
• Water Leak ............................................................................................................................. 41
9. PART INSPECTION ........................................................................................................................ 43
9-1.FILTER ASSEMBLY (LINE FILTER) ......................................................................................... 43
9-2.DOOR LOCK SWITCH ASSEMBLY ......................................................................................... 44
9-3.STATOR ASSEMBLY ............................................................................................................... 46
9-4. PUMP MOTOR ASSEMBLY ....................................................................................................... 49
9-5.INLET VALVE ASSEMBLY .......................................................................................................50
10. DISASSEMBLY INSTRUCTIONS .................................................................................................. 51
11. EXPLODED VIEW AND PART LIST .............................................................................................. 59

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.

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 F14A8YD(1~9) / S44A8YD
POWER SUPPLY
PRODUCT WEIGHT
ELECTRICITY
CONSUMPTION
100 ~ 1000 kPa (1.0 kgf / cm 2~ 10.0 kgf / cm )
2
Electronic
Refer to the Rating Label
600 mm (W) x 640 mm (D) x 850 mm (H)
Cotton, Cotton Eco, Mix, Easy Care, Duvet, Baby Care,
Skin Care, Sports Wear, Wool, Quick 30, Silent Wash, Rinse+Spin,
Dry Only, Wash+Dry
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
190 W
380 W
30 W
2120 W
220 - 240 V~, 50 Hz
72 kg
OPERATION WATER PRESSURE
CONTROL TYPE
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
WASH CAPACITY
WASHING
SPIN
DRAIN MOTOR
WASH HEATER
REVOLUTION
SPEED
WASH
SPIN
DRY HEATER
1400 RPM : No Spin / 400 / 800 / 1000 / 1400
46 rpm
1550 W

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 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.

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

9
Use spanner to remove transit bolts.
3
Confirm the distance between the appliance and the wall.
4
The tap connection and hose connection must be parallel.
5
Without removal of transit bolts
  and  .
X4EA
Transit bolts
ore than 2cm If the distance is less than 2cm,
the water supply hose will
 or  .
1. Unscrew 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 within in the hose can adhere completely to the tap and then
tighten it by screwing it to the right.
• 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
• Screw the hose connector onto water supply tap.
■Connecting water supply hose
Step1 : Check rubber seal inlet hose
Step2 : Connect hose to water tap
• Two rubber seals are supplied with the water inlet hoses.
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

10
Please use the horizontal tap
Horizontal tap Extension tap Square tap
1. Unscrew 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.
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 there are no kinks in the hose and that they are not
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.
NOTE
After connecting inlet hose to water tap, turn on the water taps
to flush out foreign substances (dirt, sand or sawdust) in the
water lines. Let water drain into a bucket, and check the water
temperature.
NOTE
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 spacing
ring before inserting the faucet into the adaptor.

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 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
Laundry tub
Retainer
Tie
strap
Hose
max. 100 cm
Max. 100cm
about 105 cm
Max. 100cm

12
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

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.
·Press the left Option + temp
button simultaneously and the
present temperature will be
displayed. 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.

16
Additional programs
Power
Start/Pause
Cycle Selector
Option Button
5. OPERATION

17
        
      
  
      
  
EST. Time remaining
Beep on/off
     
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
 .     
   ( 

 .     
     
Tub Clean

    + 
      
    # 
 // 
- . /   .01! 12.3
     
4    5 
/      
Child Lock
!     *
 
Dry
;1  8  8 . 8 *
< 8 =   
 


18
6. WIRING DIAGRAM / PCB LAYOUT
Wiring Diagram
 
 


























 








  
 




    





















 














 






  

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
 
  
 










 
 




 
 
 




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


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
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

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 
 

19
PCB Layout (Main)
Earth Wire Connector
Dry Heater
Dry Fanmotor

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 ‘Wash’ & ‘Spin’ 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
1
2
3
4
5
6
None
1 time
2 times
3 times
4 times
5 times
6 times
7 times
8 times
9 times
10 times
11 times
12 times
13 times
14 times
15 times
16 times
Number of times the
Start/Pause button is pressed Check Point Display Status
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 dry turns on.
Inlet valve for steam turns on.
Tumble counterclockwise.
Heater turn on for 3 sec
Circulation pump turn on.
Drain pump turns on.
Water level Sensor for Steam
Steam Heater turns on for 1.2 sec
Dry Fan / Dry Heater turn on.
Off
rpm (42~50)
rpm (55~65)
rpm (125~155)
Water level frequency (25~65)
Water level frequency (25~65)
Water level frequency (25~65)
Water level frequency (25~65)
Water level frequency (25~65)
rpm (42~50)
Water temperature
Water level frequency (25~65)
Water level frequency (25~65)
Water level frequency of TSG (0~255)
TSG temperature
Dry Fan / Dry Heater 6min
-

21
7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY
7-4. HOW TO CHECK THE TEMPERATURE OF EACH THERMISTOR
AT OPERATING CONDITION.
The digits indicate the water level frequency.
For example, if 255 is displayed
the water level frequency is 25.5kHz (255X0.1)
Touch the Rinse+ and Temp button simultaneously.
Touch the Temp. and Rinse Hold button simultaneously.
Thermistor in tub temperature

22
If you press the Start/Pause button in error condition, any error except will disappear and the
machine will change into the pause status.
In case of , , if the error is not resolved within 20 sec., and in case of all other errors, if the
error is not resolved within 4 min., the power will turn off automatically and the error only will blink.
But in the case of , the power will not turn off.
7-5. ERROR DISPLAY
ERROR SYMPTOM CAUSE
WATER INLET
ERROR
•Not reached the water level(248) within 10 minutes
after water supplied or not reached to the preset
water level within 25 minutes. Page 26
1
UNBALANCE
ERROR
•The appliance is tilted.
•Laundry is gatherd to one side. Page 27
2WATER OUTLET
ERROR
•Not fully drained within 10 minutes. Page 28
3OVERFLOW
ERROR
•Water is overflowing (under 21.3kHz).
If " " is displayed, the drain pump operates
to drain the water automatically. Page 30
4PRESSURE SENSOR
S/W ERROR
•The pressure sensor switch is out of order.
Page 31
5DOOR OPEN
ERROR
•In case of operating the reservation function or the
other function with door opened. Close the door,
then the error display is resolved.
•The door switch is out of order. Page 32
6
THERMISTOR(HEATING)
ERROR
•The THERMISTOR is out of order. Page 33
7

23
ERROR SYMPTOM CAUSE
MOTOR LOCKED
ERROR
•The connector in the LEAD WIRE ASSEMBLY is
not connected to the connector of STATOR
ASSEMBLY.
Reconnect or repair the connector.
•The hall sensor is out of order/defective.
Replace the STATOR ASSEMBLY Page 34
8
POWER
FAILURE
•The washer experienced a power failure
Press the start/pause button
9
•The Dry Heater is out of order
•The Connector of the Dry Heater is not connected
properly to the cinnector in the Main PWB ASSEMBLY
•The Dry fan motor is out of order Page 37
DRY HEATER
ERROR
10
NOTE
When you paused the machine under drying cycle, drying fan motor can be operated to save itself for 30
seconds. And then the machine displays “ ” on the panel.