LG TD-C70070E User manual

100
CONDENSING DRYER
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE
CORRECTLY BEFORE OFFERING SERVICE.
MODEL : TD-C70070E
CAUTION

101
SET. 2006 PRINTED IN KOREA P/No.:3828EL

2
To avoid personal injury, 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.
!
WARNING !
IMPORTANT SAFETY NOTICE
The information in this service guide is intended for use by individuals possessing adequate backgrounds
of electrical, electronic, and mechanical experience. Any attempt to repair a major appliance may result in
personal injury 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.
RECONNECT ALL GROUNDING DEVICES
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.
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
finished, 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 finger 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 failed electronic control assembly in anti-static bag, observe above instructions.

3
1. SPECIFICATIONS ..................................................................................................................4
2. FEATURES AND LOOK ..........................................................................................................5
3. PART IDENTIFICATION...........................................................................................................6
4. PROGRAM CYCLE.................................................................................................................7
5. INSTALLATION INSTRUCTIONS ...........................................................................................10
6. MAINTENANCE INSTRUCTIONS .........................................................................................12
7. COMPONENT TESTING TIPS ...............................................................................................15
8. CONTROL LAY-OUT ............................................................................................................17
9. WIRING DIAGRAM.............................................................................................................18
10. TROUBLESHOOTING GUIDELINES.....................................................................................19
11. DIAGOSTIC TEST ..............................................................................................................23
12. DIASSEMBLE INSTRUCTIONS ...........................................................................................30
13. EXPLODED VIEW ..............................................................................................................40
CONTENTS

4
SPECIFICATIONS
1
ITEMS
MATERIAL & FINISHES
DRYING TYPE
WEIGHT
DIMENSION
STANDARD DRYING CAPACITY
CONTROL TYPE
POWER SUPPLY
MOTOR
HEATER
LAMP
DOOR SWITCH
THERMOSTAT
CONTROL TYPE
DRUM CAPACITY
SAFETY DEVICES
SENSING TYPE
FILTER
DRUM SPEED
REVERSIBLE DOOR
DRUM
DRYER RACK
CHILD LOCK
TEMPERTURE CONTROL
BUZZER OFF
ANTI-CREASE COURSE
TIME DELAY
DRUM INTERIOR LIGHT
LED DISPLAY
TD-C70070E
Condenstation
45 kg (Gross : 50 kg)
595(W) x 850(H) x 600(D)
4.1 cu.ft
Electronic Control
AC 220~240V, 60Hz (16A)
250W
2350W
20W(125mA)
250V(5A)
240V(25A)
Electronic
116 Liter
Thermal Fuse (Motor)
Over current protect (Motor)
Thermostat
Micom electronic Control
1. Temperature : 2 thermistors
2. Humidity : Electrode Sensor
Removable (Double screen)
54~58 rpm
Available
Stainless steel
Available
Available
Available
Available
Available
Available
Available
TIME DISPLAY
RUNNING STATUS INDICATOR
EMPTY WATER
CLEAN FILTER
CHILD LOCK
TIME LEFT
START/PAUSE
REMARK
LGEUK:13A, LGEAP:10A
LGEUK:2350W, LGEAP:1900W
High/Low Temp buttons
Default : On
Dafault : OFF
3~19 hours

5
FEATURES AND LOOK
2
Ultra Big Capacity Drum
The LG Dryer has a large capacity.
Reduced drying time
Drying time is shortened by efficient air flow mechanism and
optimized heater.
Innovative Noise Reduction
Noise is reduced by optimized design of air flow system and vibration
reduction technology.
Ease of Use
Large LED display and electronic control.
Your dryer provides sensor drying and manual drying programs.
Sensor Dry Dryer electronically senses laundry moisture level and it automatically determines operation time
based on the dryness of the load and the selected program. At times,you can see sudden increase or
decrease of operation time. It happens because a sensor will detect laundry humidity with a certain period.
Sudden change of operation time is not a malfunction.
Manual Dry Manual Dry allows you to set operation time manually to complete drying. Or use Manual Dry if
clothes are still damp after sensor dry cycle is finished. Manual Dry is more effective for heavyweight and bulky
items such as king-size bed sheets and thick work clothes.
What are Sensor Dry and Manual Dry?
Control Panel
Additional function buttons
• High Temp. / Low Temp.
• Buzzer off
• Wrinkle care
• Favourite
• Time Delay
LED Display
• Time Display
• Indicator lamps
Start/PauseProgram selector
TD-C70070E/75E

6
PART IDENTIFICATION
3
1. Drain Hose Assembly
P/No. : 5001EL2001A P/No. : 3751EL1002B
2. Dryer Rac Assembly(Purchased Seperately)
3. Stac ing it Assembly
Holder : 2EA, Screw : 4EA Holder : 2EA, Screw : 4EA
Purchased Separately
Accessory parts
Control panelWater container
Door
Condenser Cover
Air ventilation grill

7
4PROGRAM CYCLE
High Temp. / Low Temp.
These are functioning to shorten or lengthen
the cycle time by increasing or decreasing
temperature.
Buzzer off
This is about buzzer sound on/off.
After power is on and you select cycle, buzzer
will sound when you press a certain button on
the panel.
If you don’t like to hear that sound, just press
button. The Buzzer is then turned -off.
Wrinkle care
Wrinkle care is functioning to prevent creases
and rumples that are formed when the
laundry is not unloaded promptly at the end
of drying cycle. In this function, the dryer
repeatedly runs and pauses to the cycle end.
If the door is open during Wrinkle care
process, this function is cancelled. But in
case of door open during normal operation
without selecting Wrinkle care, this function
will be remembered and processed.
Favourite
If there is some cycle you would like to make
based on your own drying habit, use “Favourite”.
Once favourite cycle is stored, you can repeatedly
use next time before changing the stored setting.
For instance, you turn power on and select Extra
Dry in Cotton Cycle and Low temp and Anti-
Crease in series and then lastly press “Favourite”
until the dryer beeps. It’s about 3 seconds. That’s
all you have to do.
The next time, when turning the dryer on and
pressing “Favourite” you can see the above
options you select displays on the panel.
Time Delay
You can use the Time Delay function to delay
the finishing time of drying cycle.
Maximum Time Delay is 19 hours.
1. Turn the dryer on
2. Select cycle
3. Set time delay hour
4. Press Start/Pause button
Child Lock
For the safety of your children, press High Temp.
and Low Temp. buttons at the same time for
about 3 seconds. You can check this function by
seeing the dryer display “ ” on LED window.

8
PROGRAM CYCLE
4
CAUTION
If the load is less than 1kg, please use “Manual Drying course”
Your wool should be used in Wool program and heat-sensitive fabrics including silk, underwears,
lingerie should be used in delicates courses.
Otherwise, these clothes can cause undesirable drying results.
Cycle Selection Table
Electronic Auto Dry Cycles Standard
Program
Mixed-Fabric cycles
(Note) press the "Low Temp." button for heat-sensitive items
Bed linen and table linen, tracksuits, For thick and quilted fabrics which do not need to be ironed. Very
anorak, blankets
shirts, blouses and sportswear For fabrics which do not need to be ironed. Normal
Trousers, dressers, skirts, blouses For fabrics which do need to be ironed. Damp
Cotton/Linen (Whites and coloreds)
(Note) press the "Low Temp." button for heat-sensitive items
Towelling, dressing gowns For thick and quilted fabrics. Very
and bed linen
Terry towelling, tea towels, towel, For thick and quilted fabrics which do not need to be ironed. More
bed linen
Bath towels, tea towels, For fabrics which do not need to be ironed. Normal
underwear, cotton socks
T-shirts, trousers, underwear, For fabrics which do need to be ironed lightly, not completely. Less
work clothes
Bed linen, table linen, towels, T-shirts For fabrics which do need to be ironed. Damp
Polo shirts and work clothes
Bed linen, table linen, towels For fabrics which do need to be pressed. Damper
Manual Dry Cycles for selected length of time
Bath towels, bath robes, dishclothes, Small clothes & pre-dried laundry Normal Warm (20min.)
Quilted fabrics made of acrylic Normal fabrics using hot temperature for 20minutes
Small clothes & pre-dried laundry
Normal fabrics using hot temperature 40minutes Warm (40min.)
All fabrics needing freshing, tumbles without heat Cool Air (20min.)
sweater, delicate, fabrics, sportshoes For the fabrics you do not want tumble dry. Rack dry
Special Fabrics
Wool For wool fabrics. Wool
Silk, Women's thin clothes, lingerie For fabrics which are heat-sensitive like synthetic fabrics. Delicates

9
PROGRAM CYCLE
4
Very
More
Normal
Less
Damp
Damper
Very
Normal
Damp
Warm(20)
Warm(40)
Cool-Air(20)
Rack Dry(40)
Wool
Delicate
O
O
O
O
O
O
O
O
O
X
X
X
X
X
X
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
X
O
O
125
120
115
103
97
90
53
48
41
20
40
20
40
69
45
O
O
O
O
O
O
O
O
O
X
X
X
X
X
X
Cotton
Mixed
Fabric
Timed
Drying
Special
Fabric
Course
Course detail
HighTemp Buzzer off Wrinkle care
Left Time
LowTemp

10
5
GROUNDING INSTRUCTION
This appliance must be grounded. In the event of malfunction or breakdown, grounding will reduce the risk of
electric shock by providing a path of least resistance for the electric current.
This appliance is equipped with a cord having an equipment grounding conductor and a grounding plug. The plug
must be plugged into an appropriate outlet that is properly installed and grounded in accordance with all local codes
and ordinances.
Additional Grounding Procedure
Some local codes may require a separate ground. In such cases, the required accessory ground wire, clamp and
screw must be purchased separately.
INSTALLATION INSTRUCTIONS
Level the dryer
1. Levelling the dryer is to prevent undesirable noise and vibration.
When placing your dryer in an solid and level area where water is not
dripping and freezing, flammable materials are not stored.
2. If the dryer is not properly level, adjust the front levelling legs up and
down as necessary.
Turn them clockwise to raise and counterclockwise to lower until the
dryer is not wobbling both front-to-back and side-to-side.
❊ Diagonal Check
When pushing down the edges of the washing machine, the machine should not
move up and down at all. (Please, check both of two directions)
If machine rocks when pushing the machine top plate diagonally, adjust the feet
again.
Adjustable feet
Adjustable feet
Adjustable feet
Raise Lower
WARNING
Improper connection of the equipment grounding conductor can result in a risk of electric shock. Check with
a qualified electrician or a service person if you are in doubt as to wether the dryer is properly grounded.

11
5INSTALLATION INSTRUCTIONS
1. Place the LG dryer on the LG Washing
machine.
2. Unscrew Rear cover in the Base by unscrewing
2 screws.
3. After detaching protection sheet of double-
side tape, align stacking kit holes rear cover
holes and then attach tape to the washer by
pressing hard.
4. Assemble a stacking kit as following.
• Screw 2 screws which is unscrewed earlier to
assemble dryer rear back and stacking kit.(①)
• Use accessory screws to assemble washer rear
cover and stacking kit. ( ②,③)
• The procedure for the opposite side will be the
same.
WARNING
When Placing
the dryer, pull
power cord out of
a power source.
Don’t drop the
dryer.
!
600 mm
600 mm
500 mm
Stacking Kit
In order to stack this dryer on LG Washing machine,
you must purchase the LG stacking kit that is
fitted by LG washing machine top plate size.
Condensate Drain
The dryer can drain water without delivering to
water container. Water is directly pumped out of the
dryer.

12
MAINTENANCE INSTRUCTIONS
Front Ventilation Grille
Vacuum the front ventilation grill 3~4 time a year to
make sure there must be no build-up of lints or dirts
which cause improper intake air flow.
Moisture Sensor?
This device functions to sense the moisture
remaining contents of the laundry during operation
which means it must be cleaned all the time. The
main reason of cleaning this part is to remove the
build-up of lime scale on the surface of sensor. Wipe
the sensors inside drum (Shown in the picture).
1. Unscrew
cover.
2. Take
connecting kit
out.
3. Separate water
container hose
from the kit.
4. Connect drain
hose to the kit.
Condensed water Drain-out
Normally, condensed water is pumped up to water
container where water is collected until emptied.
Not only using water container, but water can be
drained out directly to drain hose especially when
dryer is stacked on top of washing machine.
With connecting kit for drain hose, you can simply
change water path and water reroute to the
drainage facility.
Please follow the below steps.

13
MAINTENANCE INSTRUCTIONS
6
Reverse the door
The door can be reversed to fit to your own
installation conditions. From the factory, the door
hinge is located on the right side.
4. Detach both
hinge point
covers.
5. Unscrew two
door hinges.
6. Replace both
hinge point
covers where
door hinge is
located.
1. Unscrew the bottom hinge of the door first
and top hinge. And then place on the blanket
to prevent scratches.
2. Remove the
door lock
cover.
3. Remove the
door lock and
replace where
door lock
cover is
located.
7. Replace the
door catch to
the reverse
location.
8. Screw the
door hinges.
CAUTION
1. This work may cause the injury of your
hands so you must be careful to handle
some sharp devices like tork screwdriver or
slotted screwdriver.
2. When the door is revered, the hand sticker
on the door also must be replaced.
Do not use a machine screwdriver.

14
MAINTENANCE INSTRUCTIONS
6
Change the Bulb
The bulb itself could be very hot when the dryer just
finishes its operation. So before changing the bulb,
be sure that the inside of the drum is cool down.
1. Open the door, put a hand into the drum and
grasp a bulb cover.
2. With the bulb cover held by a hand, turn it to
the clockwise with a certain amount of the
force.
4. Remove the current bulb turning it to counter
clockwise direction.
Be careful that it does not fall off.
5. Screw in the new bulb in the reverse
unscrewing direction.
6. With the bulb cover held by a hand, turn it to
the counterclockwise with a certain amount of
the force, until you listen to “click sound”
3. Seperate the bulb cover from the socket
housing.
Do not need any special tool for this work.
All steps can be done manually.
CAUTION
Power cord must be unplugged before this
work to avoid danger of electric shock.

15
COMPONENT TESTING TIPS
7
Component Test procedure Check result Remark
1. Thermostat
(Manual type)
Measure resistance of
Terminal to terminal
1) Open at 170°C (-10/+5°C)
Measure resistance of
terminal to terminal
Measure resistance of
Terminal to terminal
Measure resistance of
therminal to terminal
Measure resistance of
Terminal to terminal
Measure resistance of
Terminal to terminal
Measure resistance by pressing
button When resistance becomes ∞
Resistance value < 5Ω
Safety
Thermostat
Cover, Front
Heater
Resistance value :
10KΩ 5% (at 25°C)
Resistance value :
Yellow/White : 28.96 1Ω
Blue/White : 56.29 2Ω
Resistance value :
200KΩ 5% (at 25°C)
Resistance value :
White/Blue : 24.8 2.5Ω
Blue/Red : 21.5 2.0Ω
Resistance value :
205±10Ω
3. Heater,
Thermistor
4. Motor
6. Pump
2. Thermistor
(Low temperature )
Thermistor

16
COMPONENT TESTING TIPS
7
Component Test procedure Check result Remark
7. Door S/W
8. Lamp holder
Measure resistance of the
Following terminal
1) Door switch knob : open
①Terminal : “COM”- “NC”
(1-3)
②Terminal : “COM”- “NO”
(1-2)
2)Door switch push : Push
①Terminal : “COM”- “NC”
(1-3)
②Terminal : “COM”- “NO”
(1-2)
Measure resistance of
terminal to terminal
①Resistance value < 1Ω
②Resistance value ÷ ∞
①Resistance value ÷ ∞
②Resistance value < 1Ω
The state that
knob is Pressed is
opposite to open
condition
Resistance value :
80Ω~100Ω
AC 230V, 20W
COM
NC
NO

17
WIRING DIAGRAM
8
ELECTRIC DRYER WIRING DIAGRAM
1 3
2 4
GREEN
GREEN
BROWN
ELB
BROWN
L1
N
BLACK
NOISE FILTER
WHITE
RED
BLACK
WHITE
WHITE
WHITE
BLACK
LAMP
DOOR SWITCH
PINK
MOTOR
PINK
GRAY
YL3
BLUE
BLUE
WHITE
WHITE
WHITE
ORANGE
YELLOW
RED
BLACK
BLUE
BLUE
BLUE
BLUE
ORANGE
THERMISTOR
OUTLET
MOISTURE
SENSOR
GREEN/
YELLOW
ELECTRONIC CONTROL
PUMP
SENSOR
PUMP
MOTOR
ORANGE
BLUE
BROWN
BROWN
SKY-BLUE
SMALL COLL
THERMOSTAT
HEATER
LARGE COLL
THERMISTOR
INLET
SKY-BLUE
BLUE
WH1
1
1
2
1
RLY3
RLY2
BL3
RLY1
RD4
WH8
RLY4
WHITE
RED
GREEN
GREEN/YELLOW
바탕/줄
12
2
3123
123
123
123
123
123
11
22
3
1234
1
1
2
2
3
3
48
7 6
4
L2
G

18
TROUBLESHOOTING
9
1. This TEST should be used for Factory test/Service test. Do not use this DIAGNOSTIC TEST other than specified.
2. Activating the Heater manually with Door open may trp the Thermostat attached to the Heater, therefore do not
activate it manually, (Do not press the door switch to operate the heater while the door is open)
Activating the diagnostic test mode
1. Unit must be in Standby (unit plugged in, display off)
2. Press “ POWER” while pressing "Buzzer off" and "Wrinkle care" simultaneously.
Data Display
-Tested under normal operation mode.
- Press the
「
Low Temp.」 and
「
Time Down」 button as follows.
Checkpoints
No. of Button
pressing Display
None •Check LED lamps
•Motor run clockwise
•Humidity data
•Motor run clockwise
•Humidity data
•Motor run clockwire
•Heat 1750W On
•Motor run clockwise
•Heat 1750W on, Heat 750W On
•Motor On
•Motor run counterclock wise
•End
Moisture Pulse count(normal:1 ~ Increase)
Moisture Pulse Width time(100ms)
(normal:1 ~ Increase)
Temp sensed by low temp
thermistor(located under door)
Temp sensed by High temp
thermistor(located in base)
1 time
2 times
3 times
4 times
5 times
6 times
7 times
No. of Button pressing
1 time
2 times
3 times
Display
None
Temp sensed by low temp thermistor (located under door)
Temp sensed by High temp thermistor (located in base)

19
TROUBLESHOOTING
9
Power-On
NO
YES
YES
NO
NO
NO
NO
YES
YES
Power-Off
Power button press
Plugged in
Start button Lock:
: No buzzer
Door is not closed
(" ") display
Drum Belt broken
Check Filter sign
glitters
Empty water sign
Over clothes Load
Motor malfunction
Low temperature
Harness Wire
broken
Led broken
Display pcb
wire broken
Power button
Lock:No buzzer
Circuit breaker
trip
Low voltage
Led-Segment
On
Drum not
Roating
Door Open?
(Rotating)
Lamp on?
Lamp Broken
Connector malfunction
Check Heater Power
Thermostat trip
Check thermistor open/short
Fan
Properly
Drying?
See the Page 24
check list
Replace Belt
Clean filter and
Condenser
Empty water
container