LG RC9011 Series User manual

CONDENSING DRYER
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE
CORRECTLY BEFORE OFFERING SERVICE.
MODEL : RC9011** / RC8011** Series

JUL. 2008 PRINTED IN KOREA
P/No.: 3828EL9001K

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
CONTENTS
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 ............................................................................................ 14
8.CONTROL LAY-OUT ........................................................................................................ 16
9.WIRING DIAGRAM ......................................................................................................... 17
10. TROUBLESHOOTING .................................................................................................... 18
11. DIAGOSTIC TEST ........................................................................................................... 21
12. DIASSEMBLE INSTRUCTIONS ........................................................................................ 28
13. EXPLODED VIEW .......................................................................................................... 33

4
SPECIFICATIONS
1
ITEMS RC8011**
TIME DISPLAY
RUNNING STATUS INDICATOR
EMPTY WATER
CLEAN FILTER
STANDARD DRYING CAPACITY
MATERIAL & FINISHES
LGEUK:13A, LGEAP:10A
LGEUK:2350W, LGEAP:1900W
Gentle button
Default : high
Dafault : OFF
Maximum=100min.
Minimum=15min.
3~19 hours
Condenstation
45 kg (Gross : 50 kg)
595(W) x 850(H) x 600(D)
8.0 kg
Electronic Control
AC 220~230V, 50Hz (16A)
210W
2500W
DC12V(30mA)
250V(5A)
240V(25A)
Electronic
125 Liter
Thermal Fuse (Motor)
Over current protect (Motor)
Thermostat
Micom electronic Control
1. Temperature : 2 thermistors
2. Humidity : Electrode Sensor
Removable
52~53 rpm
Stainless steel
Available
Available
Available
Available
Available
Available
Available
Available
Available
TIME DISPLAY
RUNNING STATUS INDICATOR
EMPTY WATER
CLEAN FILTER
Condenstation
45 kg (Gross : 50 kg)
595(W) x 850(H) x 600(D)
9.0 kg
Electronic Control
AC 220~230V, 50Hz (16A)
210W
2500W
DC12V(30mA)
250V(5A)
240V(25A)
Electronic
125 Liter
Thermal Fuse (Motor)
Over current protect (Motor)
Thermostat
Micom electronic Control
1. Temperature : 2 thermistors
2. Humidity : Electrode Sensor
Removable
52~53 rpm
Stainless steel
Available
Available
Available
Available
Available
Available
Available
Available
Available
DRYING TYPE
WEIGHT
DIMENSION
CONTROL TYPE
POWER SUPPLY
MOTOR
HEATER
LED LAMP
DOOR SWITCH
THERMOSTAT
CONTROL TYPE
DRUM CAPACITY
SAFETY DEVICES
SENSING TYPE
FILTER
DRUM SPEED
DRUM
DRYER RACK
CHILD LOCK
TEMPERTURE CONTROL
BUZZER
ANTI-CREASE
Dafault : OFF
Available Available
FAVOURITE
MORE TIME
LESS TIME
TIME DELAY
DRUM INTERIOR LIGHT
LED DISPLAY
RC9011** REMARK

FEATURES AND LOOK
2
Ultra big Capacity Drum
LG Dryer has 9.0kg / 8.0kg capacity which is the ultra big capacity.
Lower Energy Consumption
Energy is saved by cutting-edge engineering design of drying system
and by optimized heating control. It’s a real money saving.
Reduced drying time
Drying time is shortened by efficient air flow mechanism and
optimized heater.
Innovative noise performance
Noise gets reduced by Noise-absorption & screening technology.
Easy of Use
Wide LED display using electric control.
Control Panel
RC9011A/B/C, RC8011A/B/C
savesave
Energy
5
Program Selector Additional Function
Buttons
• More Time
• Less Time
• Option
• Buzzer
• Time Delay/Favourite
Anti-Crease/Drum Light
Drying Level
• Iron
• Light
• Cupboard
• Very
• Extra
LED Display
• Time Display
• Indicator Lamps & Left Time

PART IDENTIFICATION
3
6
1. Drain Hose Assembly
P/No. : 5001EL2001A P/No. : 3751EL1002C
2. Dryer Rack Assembly
3. Stacking kit Assembly ( Purchased Seperately)
1
Accessory parts
Holder : 2EA, Screw : 4EA
Purchased Separately
Holder : 2EA, Screw : 4EA
Purchased Separately
2
RC9011A1/B1/C1, RC8011A1/B1/C1
Control Panel
Water Container
Glass Door
Air Ventilation Grill
Condenser Cover

PROGRAM CYCLE
4
7
Time Delay
You can use the Time Delay function to delay the
finishing time of drying cycle.
Maximum Time Delay is 19 hours.
Minimum Time Delay is 3 hours.
1. Turn the dryer on
2. Select cycle
3. Set time delay hour
4. Press Start/Pause button
More Time/Less Time
Press More Time or Less Time until the desired
drying time is set.
Buzzer
This is a function to able to adjust volume of
beeper sound.
Option
Gentle
-These are functioning to shorten or lengthen the
cycle time by increasing or decreasing
temperature.
Damp Dry Beep
-This is a function to inform time.
When is the most suitable for ironing with beeper
sound.
Crease Care
- This is a function to reduce wrinkles.
Child Lock ( )
For the safety of your children, press More Time
and Less Time buttons at the same time for
about 3 seconds. You can see “ ” sign on
LED window.
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.
Anti-Crease
Anti-Crease 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 Anti-Crease process,
this function is cancelled.
Drum Light
During operating cycle, you can see the drum
inside by choosing drum light function.
It helps easy viewing the drying cycle.
Note
For “ ” off, press More Time and Less Time
buttons at the same time for about 3 seconds.
Note
These buttons are available only with Timed
Drying, before you push Start/Pause button.

PROGRAM CYCLE
4
8
Cycle Selection Table
CAUTION
If the load is less than 1kg, please use "Timed 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.
Cotton (Whites and coloreds)
(Note) Select the gentle by pressing the option button for heat-sensitive items
Mixed-Fabric Cycles
(Note) Select the gentle by pressing the option button for heat-sensitive items
Towels, dressing gowns
and bed linen For thick and quilted fabrics
Standard
program
Extra Dry
Very Dry
Cupboard dry
light Dry
Iron Dry
Very Dry
Cupboard dry
Iron Dry
Quick Dry
Warm
Cool Air
Wool
Delicate
Sports Wear
Bulkey Item
For thick and quilted fabrics which do not need to be ironed
For fabrics which do not need to be ironed
For fabrics which do need to be ironed lightly, not completely
For fabrics which do need to be ironed
For thick and quilted fabrics which do not need to be ironed
For fabrics which do not need to be ironed
For fabrics which do need to be ironed
For the small loads of qualified fabrics with short drying times
For wool fabrics
For fabrics which are heat-sensitive like synthetic fabrics
For 100% polyester material
For bulky items
Small clothes & pre-dried laundry
Normal fabrics using hot temperature for 20minutes
Small clothes & pre-dried laundry
Normal fabrics using hot temperature 40minutes
Terry towels, tea towels, towels,
bed linen
Bath towels, tea towels,
underwear, cotton socks
Sheets, pillowcase, towels
Bed linen, table linen, towels, T-shirts
Polo shirts and work clothes
Bed linen, table linen, tracksuits,
anorak, blankets
Shirts, blouses
Trousers, dressers, skirts, blouses
Quick Dry Cycles
A kind of linen and towel except
for the special fabrics
Timed Drying Cycles for selected length of time
Bath towels, bath robes, dishclothes,
Quilted fabrics made of acrylic
All fabrics needing freshing, tumbles without heat
Special Fabrics
Wool
Silk, Women's thin clothes, lingerie
Soccer uniform, training wear
Bed clothes
Electronic Auto Dry Cycles

PROGRAM CYCLE
4
9
Course
Course Detail
Extra
Very
Cupboard
Light
Iron
Very
Cool Air
Delicate
Sports wear
Wool
Bulky Item
Warm
Cupboard
Iron
XO
O
O
O
O
O
O
O
X
X
O
X
X
X
X
X
X
X
X
O
X
X
O
X
X
X
X
X
X
X
X
X
X
X
X
O
O
O
X
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
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
X
X
X
X
X
X
X
X
O
O
X
X
X
X
O
O
O
X
X
O
O
X
X
X
X
X
X
X
X
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
125
120
115
103
97
53
48
41
50
40
40
45
30
21
60
Less time
More time
Gentle Hand
Iron
Cotton
Mixed
Fabrics
Timed
Drying
Special
Fabrics
Quick
Crease
care Buzzer Time
Delay
Anti
crease
Left Time
Favourite
Damp Dry
beep

INSTALLATION INSTRUCTIONS
5
10
Level the Dryer
1. Leveling 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
leveling 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.
Dryer is raised Dryer is lowered
Adjustable Feet
Adjustable Feet
Adjustable Feet
Diagonal Check
When pushing down the edges of the 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.

INSTALLATION INSTRUCTIONS
5
11
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.
1. Place the LG dryer on the LG Washing
machine.
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.( )
•Use accessory screws to assemble washer rear
cover and stacking kit. ( , )
•The procedure for the opposite side will be the
same.
2. Unscrew Rear cover in the Base by unscrewing
2 screws.
When Placing
the dryer, pull
power cord out of
a power source.
Don’t drop the
dryer.
Dryer
Washer
WARNING
2 3
1

3. Connect
drain hose
to the kit.
MAINTENANCE INSTRUCTIONS
6
12
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).
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.
1. Take
connecting
kit out.
2. Separate
water
container
hose from
the kit.

13
MAINTENANCE INSTRUCTIONS
6
1. Disassemble Top Cover, Drawer and Control
Panel Assembly as explained in Page no. 30
2. Disconnect the Red Connector.
4. Open the Door, Put your one hand inside
the Drum and unscrew the screw on amp
Cover with the help of a screw driver.
egs for holding
Assembly
5. Rotate the lamp cover in anti-clockwise
direction (from your side) till it stops to rotate
and pull it with certain amount of force, and
take out the ED amp Cover Assembly.
6. Now insert new ED amp Cover assembly
from inside and pull the connector and its
wire toward outside through the hole , at
same time rotate the lamp cover in clockwise
direction, till it stops to rotate.
7. Screw the screw taken out during
disassembly.
9. Assemble the control panel, Drawer and Top
plate.
8. Adjust the Wire through the hooks and
Connect the red connector.
3. Now take the wire of amp Cover Assembly
out of the hooks as shown in picture.
(DO NOT forget to connect the connectors of
Control Panel Assembly in PCB Assembly).
CAUTION
•
Power cord must be unplugged before this
work to avoid danger of electric shock.
•
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.

14
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 capacitance 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(20°…):
Blue White : 15.3( 7%)Ω
Red White : 18.5( 7%)Ω
Capacitance value : 10±0.2µF
Resistance value(20°C):
210(±5%)Ω
3. Heater,
Thermistor
4. Motor
5. Capacitor
6. Pump
2. Thermistor
(Low temperature )
Thermistor

COMPONENT TESTING TIPS
7
15
Component Test procedure Check result Remark
The state that
knob is Pressed is
opposite to open
condition
Measure resistance of the
Following terminal
1) Door switch knob : open
2)Door switch push : Push
DC 12VLED LAMP8. Lamp holder
7. Door S/W
Resistance value < 1Ω
Resistance value ÷
Resistance value ÷
Resistance value < 1Ω
Terminal : “COM”- “NC”
(1-3)
Terminal : “COM”- “NO”
(1-2)
Terminal : “COM”- “NC”
(1-3)
Terminal : “COM”- “NO”
(1-2)
1
2
1
2
1
2
1
2

CONTROL LAY-OUT
8
16
MODEL
PWB ASSEMBLY DISPLAY LAY-OUT
PWB ASSEMBLY LAY-OUT
P/NO
EBR50559201
OPTION PART
RC8011*
RC9011*
DP1
X
DP2
X
DP3
X
DP4
X
DP5
X
DP6
X
EBR50559202
RC8011**
RC9011**
O : Option diode(DP) applied
X : Option diode(DP) not-applied
XXOXXX

WIRING DIAGRAM
9
17

TROUBLESHOOTING
10
18
1. This TEST should be used for Factory test/Service test. Do not use this DIAGNOSTICTEST 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 “More time” and “Less time” simultaneously.
Data Display
-Tested under normal operation mode.
- Press the button as follows.
Pressing the
“START/PAUSE”button
None Electric control
70~240
Measured
Moisture Value
70~240
Measured
Moisture Value
Current
temperature
Current
temperature
Water level in
sump
000
70~240
Measured
Moisture Value
Check all leds for operation.
Motor run counterclockwise. Course LED's on.
All the LED's on with
buzzer.
Only option Button
LED's on.
LED's of Gentle and
Quick option glitter.
LED's of Time Delay,
Favorite, Anti-crease
and Buzzer options
glitter.
All the LED's of Sub-
Jog dial (Drying
Level) glitter.
All the LED's on.
All the LED's on / Off.
Displays Moisture Sensor Operation: If
moisture sensor is contacted with damp
cloth. The display number is below 180,
in normal condition.
Motor run clockwise.
Displays Moisture Sensor Operation: If
moisture sensor is contacted with damp
cloth. The display number is below 180,
in normal condition.
Motor run clockwise.
Heater run(Display the temperature of low
temperature themistor located under door.)
Motor run clockwise.
Pump run
Heater run(Display the temperature of high
temperature thermistor located in heater
assembly.)
Motor run clockwise.
Displays Moisture Sensor Operation: If
moisture sensor is contacted with damp
cloth. The display number is below 180,
in normal condition.
Auto Off
Motor
Motor
Motor
Motor off
Control Off
Motor+Heater 1
+Heater 2
Motor off + Heater off
Pump on
Motor + Heater 1
Once
Twice
3 times
4 times
5 times
6 times
7 times
8 times
No. of Button pressing
More time + Time Delay
More time + Favourite
Moisture data
Temperature sensed by low temperature thermistor (located under door)
Temperature sensed by High temperature thermistor (located in heater assembly)
Remaining water data by water level sensor
More time + Anti-Crease
More time + Drum Light
Display
CHECKING
ACTION
CHECKING
POINTS
DISPLAY

TROUBLESHOOTING
10
19
•:LED displays “ ” in case of the door open. The door must be closed and
start Button must be pressed for re-operation. (See the 22 page)
Error Mode
•: Check the main PCB red 4 pin housing not inserting Blue harness in red 4 pin
( number 2 , 4 )
Low temperature thermistor connector not inserting
Main PCB Micom not soldering
•: Check the main PCB red 4 pin housing Short of Blue harness in Red 4 pin.
Low temperature thermistor short : check the resitance( see 15 page )
Main PCB Micom short replace Main PCB
•: Check the white 8 pin housing (No. 3,4) in main PCB.
And Check the high temperature thermistor connector in rear cover part. ( blue wire )
•:splay thermistor symptom.
Display
tE 1
tE 2
tE 3
Check point
Symptom
Low temperature thermistor open
Low temperature thermistor short
High temperature thermistor open
This manual suits for next models
1
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