LG WD1070FH User manual

Jumbo drum
LG’s jumbo drum can wash about 40% more per load than
conventional washing machine. A bigger durm improves the
wash performance.
More economical by Fuzzy Logic System
FUZZY Logic 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.
Child-Lock
The Child-Lock system has been developed to prevent
children from pressing any button to change the programme
during operation.
Low noise speed control system
By sensing the amount of load and balance, evenly
distributes load to minimize the spinning noise level.
Auto Restart
Although the washing machine is turned off by a power failure,
it restarts automatically in its stopped process when power is
supplied again. and it will be the same when the machine
unplugged in operation is plugged in again.
2. FEATURES & TECHNICAL EXPLANATION
4
2-1.FEATURES
40%

2-2.DETERMINE WASHING TIME BY FUZZY LOGIC
To get the best washing performance optimal time is determined by sensing of 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.
When the water level reaches to the preset level water supply is stopped, then washing program proceeds.
Spinning does not proceed until the water in the tub reduces to a certain level.
2-4.THE DOOR CAN NOT BE OPENED
While program is operating.
While Door Lock light turns on.
5
FUZZY
LOGIC
laundry
amount
selected
washing
temperature
water
temperature
washing time
rinse time
spin rhythm, time
the best
washing
performance
SENSING
PROCESSING DETERMINATION
EFFECT

Before servicing ask troubles of customers
Check the adjustment(power supply is 220-240V, remove the transit bolts....)
Check the troubles referring to the trouble shooting.
Decide service steps referring to disassembly instructions.
And then, service and repair.
After servicing, operate the appliance whether it works OKor NOT.
STANDARD INSTALLATION
The appliance should be installed as follows.
REMOVE THE TRANSIT INSTALL THE APPLIANCE ADJUST THE
BOLTS ON FLAT AND FIRM SURFACE HORIZONTAL
Remove the transit bolts Turn the leveling feet to
(4EA: )with supplied spanner. set the appliance horizontally.
Keep the transit bolts and
spanner for future use.
Insert the 4 caps provided
into the hole.
The appliance goes up by
rotating the feet clockwise.
The appliance come down by
rotating the feet counter
clockwise.
4. INSTALLATION
7
1
High
Low

HOW TO CONNECT INLET HOSE
Check that the rubber packing is inside of the
valve connector.
Connect the inlet hose firmly to prevent leak.
CONNECT DRAIN HOSE
CONNECT POWER PLUG
8
Make sure that the hose is not twisted.
The drain hose should be placed under 100cm from the floor.
Connect the power plug to the wall outlet. Avoid connecting several electric devices,
It may be the cause of the fire.
Avoid submerging the end of the hose.

TEST OPERATION
9
Connect the power plug to In case of Coloureds program.
the outlet.
Connect the inlet hose.
Preparation for Press the power button. Press the START/PAUSE
washing. button.
Press the button TEMP Check if the drum rotates Check if water is supplied
and the present temperature will
clockwise and counterclockwise. through the detergent dispenser.
be displayed.
Power off and then power on.
Check if the door can be
opened after Door Lock lamp
turns off.
Turn off Spin and Temp after
pressing the Start/Pause button
and start the machine again.
Check drain and Spin.
If SVC is needed during
check, remove
the remaining water by pulling
out the hose cap.
Check the water heating. Check automatic reverse Check the water supply.
turn.
Check drain and spin Power off and open the Water removal
door

12
6. WIRING DIAGRAM
(option)
GN/YL
■ WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B
■ WD-8070F(H), WD-1070(5)F(H)

❋ Pre Wash : If the laundry is heavily soiled, “Pre Wash”course is effective. Pre Wash is available in Coloureds, Whites and
Synthetic Program.
❋ Eco : By selecting Eco function, the water temperature is reduced and washing time is lengthened. So you can economize in your
consumption of energy.
❋ Rinse+ : If you wish to rinse more, the Rinse+ function will remove any trace of detergents.
❋ Bio : If you want to elimenate protein stains (milk, blood, chocolate...), you may select Bio function by pressing the option button.
❋ You can select Bio function and Eco function when temperature is higher than 60˚C in Whites, Coloureds and Synthetic.
13
7. PROGRAM CHART

8-1. BEFORE SVC CHECKING
¡ÆBe careful of electric shock or disconnecting the parts while trouble shooting.
¡ÆVoltage of each terminal in 220-240V~ and DC while applying an electric current.
8-2. QC TEST MODE.
¤Pressing Spin, and Temp button simultaneously.
¤ŁPower supply ON with pressing upper two button. then buzzer sound twice.
¤ØPress the START/PAUSE button as follows.
¡aPress the START/PAUSE button more 4 times until stop spinning¡b
8-3. HOW TO KNOW THE WATER LEVEL FREQUENCY
ƒRPress the Option and Spin button simultaneously.
ex) 241 : Water level frequency = 241¡¿10-1§
=24.1§
14
8. TROUBLE SHOOTING
The digits means water level frequency(10-1 § )
Pressing number of
£START/PAUSE£button
Checking Point Display Status
None All lamps turn on
1 time Clockwise spin(right) Motor rpm(About 45)
2 times Low speed Spin Motor rpm(About 63~67)
3 times High speed Spin Motor rpm(About 79~85) : WD(M)-8070F(H)(B)
Motor rpm(About 100~106) : WD(M)-1070(5)F(H)(B)
Motor rpm(About 107~103) : WD(M)-1170(5)F(H)B
Motor rpm(About 114~120) : WD(M)-1270(5)F(H)B
Motor rpm(About 122~127) : WD(M)-1370(5)F(H)B
4 times Inlet valve for pre-wash operation Water level frequency(25~65)
5 times Inlet valve for main-wash operation Water level frequency(25~65)
Hot inlet valve in case of hot water fill
6 times Inlet valve for main-wash operation Water level frequency(25~65)
7 times Counterclockwise spin(left) Motor rpm(About 45)
8 times A Heater is in operation for 3 sec. Water Temperature
9 times Draining pump operation Water level frequency
10 times Auto off operation

8-4. ERROR DISPLAY.
If you press the Start/Pause button in error condition, any error except ‘’will disappear and the
machine will change into pause status.
In case of if the error is not resolved within 20 sec., and in case of other errors, if
the error is not resolved within 4 min., power will be turned off automatically and the error only will be
blinked. But in case of , power will not be turned off.
15
ERROR SYMPTOM CCAAUUSSEE
1WATER INLET §Water has not reached to the pre-set level within 4 min. since
ERROR inlet valve operated or water has not reached to the normal
level within 25 min.
2IMBALANCE §The appliance is tilted.
ERROR §Laundry is gatherd to one side.
§Non distributable things are put into the drum.
3DRAIN ERROR §Water has not drained enough within 5 min.
4OVER FLOW §Water is automatically being pumped out because too much
ERROR water is in the tub.
5
SENSOR PRESSURE §The sensor pressure switch is out of order.
S/W ERROR
6DOOR OPEN §The
¡aStart/Pause¡b button is pressed with the door open.
ERROR §The door switch is out of order.
7HEATING
ERROR §The thermistor is out of order.
8SENSOR §The connector (5pin, male, white) in the Wire Harness is not
ERROR connected to the connector (5 pin, female) of Hall Sensor in
the MOTOR.
ƒ_’reconnect or repair the contact in the connector

ERROR SYMPTOM CAUSE
8
9
10
•The electric contact between the connectors
(5 pin, male in the Wire Harness and 5 pin female in the Hall Sensor) is
bad or unstable.
ƒ_Reconnect or repair the contact in the connector
•The connector (6 pin, male, natural) in the Wire Harness is not
connected to the connector (6 pin, female, natural) of PWB
ASSY(Main) or the electric contact of connectors is bad/unstable.
ƒ_Reconnect or repair the contact in the connector
•The electric contact between the connectors¡a6 pin, male in the Wire
Harness and 6 pin female in the controller(Main)¡bis bad or unstable.
ƒ_Reconnect or repair the contact in the connector
•The Wire Harness between Hall Sensor in the MOTOR and PWB
ASSY(Main) is cut(open circuited).
ƒ_Repair/replace the damaged WIRE HARNESS
•The Hall Sensor is out of order/defective.
ƒ_Replace the Motor
•The controller(Main) is out of order/defective.
ƒ_Replace the PWB ASSY(Main)
•PWB ASSY(Main) is out of order
ƒ_Replace the PWB ASSY(Main)
•Winding in the MOTOR is short-circuited.
ƒ_Replace the MOTOR
•The Connector(3 pin, male, white) in the Wire Harness is not
connected to the Connector(3 pin, female, white) of MOTOR.
ƒ_Reconnect or repair the connector
•The electric contact between the connectors¡a3 pin, male, white in the
Wire Harness and 6 pin, female, white in the PWB ASSY(Main)¡bis bad
or unstable.
ƒ_Reconnect or repair the contact in the connector
•The Wire Harness between the MOTOR and PWB ASSY(Main) is
cut(open circuited).
ƒ_Repair the damaged(open-circuited) WIRE HARNESS
•The hall sensor is out of order/defective.
ƒ_Replace the PWB ASSY(Main)
SENSOR
ERROR
CURRENT
ERROR
LOCK
ERROR
16

17
9-1. DIAGNOSIS AND ANSWER FOR ABNORMAL OPERATION
9. ERROR DIAGNOSIS AND CHECK LIST
SYMPTOM GUIDE FOR SERVICE CALL
NO POWER
Water inlet trouble
YES
YES
YES
NO
NO
YES
NO
NO
Is the power plug connected firmly to
220-240V~ outlet?
Power failure? or Breaker opened?
Visit to check
Is "no inlet" displayed?
Is the tap opened?
Is the tap frozen?
Is the water supply shut-off?
Is filter in the inlet valve clogged with foreign
material?
Visit to check
Clean the filter of
inlet valve

18
SYMPTOM GUIDE FOR SERVICE CALL
DOOR OPEN ERROR
Refer to
7-4 ERROR DISPLAY
Drain Trouble
NO
YES
YES
NO
NO
YES
Did you press the Start/Pause button when
the door is open?
Visit to check
< Check if the door switch is O.K >
Is "no drain" displayed?
Is the debris filter clogged with foreign
material such as pin, coin and etc.?
Is the drain hose frozen with water, kinked or
crushed?
Visit to check
Close the door
Clean up
the filter.

19
SYMPTOM GUIDE FOR SERVICE CALL
Suds overflow from the
appliance.
(In this condition, wash and
spin do not operate
normally)
No effect of softener
YES
YES
YES
YES
YES
Is Low-sudsing detergent for the durm
washing machine used?
Is the proper amount of detergent used
as recommended?
Recommend to reduce the using amount
of detergent.
Is softener put in the correct compartment of
drawer?
Is the drawer closed during wash?
Is the softener cap clogged?
Explain how to use softener
< Clean the compartment for softener >
Visit to check
LOW LATHERING
DETERGENT
Compartment for
softener
This appliance has the automatic suds sensing function which
operates under much suds condition for good rinse and
preventing overflow.
When much suds are sensed, suds removing fuction such as
drain, water input and pause will operate without rotating the
drum.

20
9-2. FAULT DIAGNOSIS AND TROUBLE SHOOTING
1. Be careful of electric shock or disconnecting the parts while trouble shooting.
2. First of all, check the connection of each part terminal with wiring diagram.
3. If you replace the PWB assy(Main), Put in the connectors correctly.
CAUTION
NO
NO
NO
YES
YES
YES
YES
NO
NO
YES
<PWB ASSY (MAIN)>
<PWB ASSY (MAIN)>
(1)
(2)
(5) (6)
Check the fuse?
Replace PWB assy
(Main)
Replace PWB assy(Main)
Reconnect the PWB assy
(Display)
Reconnect the PWB assy
(Display)
When measuring the voltage of the outlet,
is the voltage AC 220-240V?
Is the LED(1) on?
When measuring the voltage of natural
connector(5,6) is the voltage DC 10~16.5V?
Is connector(2) disconnected or
disassembled?
Is wire of the PWB assy(Display)
disconnected?
Replace PWB assy(Display)
NO POWER
■ WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B

■ WD-8070F(H), WD-1070(5)F(H)
21
1. Be careful of electric shock or disconnecting the parts while trouble shooting.
2. First of all, check the connection of each part terminal with wiring diagram.
3. Voltage between each terminal is AC 220-240V while applying an electric current
(except secondary part of the transformer and sensors)
21
3
PWB ASSY (POWER)
NO
NO
YES
YES
YES
NO
NO
YES
Check the fuse?
Replace PWB assy
(Power)
Reconnect and repair
connector.
Replace PWB assy(Main)
When measuring the voltage of the outlet,
is the voltage AC 220-240V?
When measuring the voltage of blue
connector of the PWB assy (Power),
is the voltage AC 220-240V?
Is connector disconnected or
or is the contact bad or cut?
Is wire of the PWB assy(Display)
disconnected?
Replace PWB assy(Display)
NO POWER
CAUTION

22
NO
YES
NO
NO
YES
NO
YES
YES
NO
NO
YES
YES
YES
NO
NO
NO
YES
Wiring diagram
option(HOT)
option(HOT)
MAX
Is the water supply shut-off?
Is the tap opened?
When you press both¡AOption¡Bbutton and¡ASpin¡B
buttons simultaneously, is the water level frequency
below 240?
Is the inlet valve filter clogged with impurity?
Is resistance of the inlet valve connector
between 2 to 8
k § ?
Check the voltage between each terminal of inlet
Valve is 220 - 240V~.
(Refer to 7-2 TEST MODE)
Is water supplied?
Are replaceptacles correctly connected to the
terminals of inlet valve?
Is detergent put in the correct compartment of
the drawer?
Is the detergent hardened?
Open the tap.
Check the chamber(Air)
and the tube clogged
with impurity.
Clean the filter.
Replace the inlet valve.
Replace PWB assy(Main)
Refer to solution
¡ANO INLET¡B
Check the wiring on the
dispenser.
Put the detergent in the
correct position
PRE+MAIN
MAIN WASH
: Detergent
Clean the drawer.
NO WATER SUPPLY
DETERGENT DOES NOT FLOW IN
MAIN
WASH
SOFTENER
PRE -
WASH

23
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
YES
YES
Wiring diagram
option(HOT)
MAX
ABNORMAL SOUND
SOFTENER DOES NOT FLOW IN
Fix the bolt tightly.
Replace the V-belt
(4400FR3116A)
Replace the motor.
Refer to
¡ANO WATER SUPPLY¡B
Check the wiring on the
dispenser.
Put it in the correct
compartment.
Clean the cap and
drawer.
Is the pulley bolt loosened?
Is the belt worn?
Is there friction noise from the motor?
Is water supplied?
Are receptacles correctly connected to the terminals
of inlet valve?
Is softener put in the correct compartment of
drawer?
Is the softner cap clogged?

24
AC 220-240V
NO
NO
YES
PWB ASSY(Main)
220-240V
NO
YES
PWB ASSY(POWER)
Replace the sensor
(pressure)
Replace the PWB assy
(Main)
Replace the sensor
(pressure)
When pressing [Option] and [Spin] at the same time
after draining, is the water level frequency 252 or
more?
When pressing
[Option], [Spin] buttons at the
same time while wash, is the water level
frequency between
220 - 240?
Checking voltage between two pins as press
the power Button is the voltage 220 - 240V~?
When pressing [Option] and [Spin] at the same time
after draining, is the water level frequency 252 or
more?
When pressing [Option], [Spin] buttons at the
same time while wash, is the water level
frequency between
220 - 240?
Replace the PWB assy
(POWER or MAIN)
HEATING WITHOUT WATER
■ WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B
■ WD-8070F(H), WD-1070(5)F(H)

25
YES
YES
NO
NO
NO
NO
YES
YES
NO
PWB ASSY(Main)
2
1
(5) (6)
1
2
YES
YES
NO
NO
NO
NO
YES
YES
NO
PWB ASSY(MAIN)
DRAIN MALFUNCTIONING
Repair drain hose
Remove foreign material.
Reconnect or repair the
connector
Replace the pump assy
Replace the PWB assy
(Main)
Is the drain hose twisted or frozen?
Is the impeller of drain pump clogged?
Is the connector disconnected, disassembled?
Is the coil of drain pump cut-off?
(resistance of coil is 90~160¥)
When checking voltage between connectors
(¥L, ¥M)on spinning, is the voltage 220 - 240V~
as the figure?
Repair drain hose
Remove foreign material.
Reconnect or repair the
connector
Replace the pump assy
Replace the PWB assy
(Main)
Is the drain hose kinked or frozen?
Is the filter of drain pump clogged?
Is the connector disconnected or is the contact
bad?
Is the coil of drain pump cut-off?
(resistance of coil is 90~160 )
When checking voltage between two receptacles
as shown ( , ) on spinning, is the voltage
220-240V ?
■ WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B
■ WD-8070F(H), WD-1070(5)F(H)

26
WASH HEATER TROUBLE
When checking the voltage between
connector the PWB assy(Main)during
whites washing ,Is the voltage
220 - 240V ?
Replace the PWB assy
(Main)
YES
NO
After power off and the heater terminal is
disconnected, is the resistance 10 to 30 ? Replace the heater assy
NO
After power off,is the resistance of wire
(RED-YELLOW) connectors between
10 to 30 ? Normal
NO
YES
RED
YELLOW
1 2 43
~
220 - 240V~
PWB ASSY(Main)
220-240V
NO
NO
YES
NO
YES
■ WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B
■ WD-8070F(H), WD-1070(5)F(H)
When checking the voltage between two
receptacles of the PWB assy(Power) during
washing.
Is the voltage 220-240V?
After power off, is the resistance between yellow
wire and red wire of
connector 10 to 30 ?
After power off, is the resistance of heater
10 to 30 ?
Replace the PWB assy
(Power)
Normal
Replace the heater assy