1. Washing Machine Division
27˝ Front Loader (Columbus Combo)
16/June/2003
Washing Machine Division

2. Variety Capacity of Condensing Combo
Washing
Capacity
Drying
5kg
2.5kg
6.5kg
3kg
7kg
3.5kg
8kg
4kg
10kg
Width
24˝(600mm)
?(developing)
27˝(686mm)
Optimum Senseclean™ washing
(Fuzzy Logic Control system)
Quiet washing
Biggest Wash&Dry Capacity
Foam Removal system(Suds-free)
Water Circulation system
Direct Drive system
Brushless Motor system
Powerful RollerJets(w/ Washing-Ball)
Condensing Drying system

3. 1. Design Look & Spec. Design Look Spec. WM : Front loading Washer
Columbus Ⅱ
WM : Front loading Washer
36 : 1200 rpm, Combo
32 : Columbus Ⅱ(Wave Panel)
H : Heater
W : White

4. 1. Product Differentiation
Dry Capacity
Columbus Combo
WD-3243RHD
Equator
Quietline
Dry(ℓb)［kg］
11［5]
6［3.0]
6［3.0]
5［2.5]
Tub Material
Plastic
Stainless
Stainless
Stainless
Dry Heater(W)
1200
1200
1300
Performance
*Dry Performance(%) 90 74 70 75
**Energy Use(%) 60 52 49 54
Water(ℓ) 15
28.5 21 28
*test condition : dry time-90min., dehydration-57%, load –8 lbs.
**efficiency : moisture / energy(kwh)

5. 2. Direct Drive system
LG recently adopt new advanced technology so called “Direct drive” system to its new washer
and wash & dry combo unit . Without belt and belt pulley, motor itself is connected to
the drum tub. It results a great improvement in reducing noise and improving energy efficiency.

6. 2. Brushless Motor system
Not like conventional washer that using brush DC motor, LG washer use Brushless DC motor
in it so that the durability, quietness and efficiency is greatly improved.
Brush
Rotor
(Magnetized by
current)
Stator
(Magnetized by current)
Brush delivers electric signals to rotate the coiled rotor.
● Brush makes frictional sound.
● Coiled rotor needs electricity.
● Brush abrades and needs replacement.
Rotor is a permanent magnet. Multi-coiled stator is
big and powerful enough to replace the pulley.
★ Powerful & Reliable control
★ Minimum vibration & noise
★ Optimum energy consumption
(brushless)
(with brush)
Coil
Conventional Motor (Universal motor)
LG’s New Motor (Direct Drive)
(permanent-
magnet)
Rotating Shaft

7. Low noises by removing brush and belt,
2. Quiet Washing
Low noises by removing brush and belt,
Low vibration by more stable balancing system
Unique no brush and no belt
Direct Drive Front Loader
Lowest Noise & Vibration Level
Conventional
Direct Drive
Washing : 53dB , Spinning : 67 dB
(*Sound Power Pressure)
Low Noises
Quiet and durable motor
by removing Brush that
makes unpleasant
noises
Low and
No Friction Noise
Stable Balancing System
Columbus DD system
Conventional system 75
18%
Low Vibration
More stable Balancing
system by moving Motor
to the center of system

8. 2. Optimum Senseclean™ washing
To get the best washing performance, optimal time is determined by the water temperature,
the selected washing temperature, and the size of the load.

9. 2. Control Process : Mechanical vs. Fuzzy Logic
Mechanically controlled washers
rpm
Not enough High Spin Time
max
Not reached Max Spin rpm.
Too much Vibration
Spin at 70dB
(normally)
100
Low Spin Performance
Fixed Spin Time
Gap of actual Performance of Spin
LG Fuzzy Logic control
rpm
High Spin
Load
detection
Balance
Check
Balance
Check
max
Balancing
Balancing
Spin at 60dB
100
Feed-Back System
Automatic control of the Spin Time
8/28

10. 2. Auto-Balancing Feed Back System
Sensor detects and makes clothes balanced so as to achieve lower noise level.
High Spin
rpm
Unbalance
detection
Balancing
Load
detection
Feed-Back System
Small load
Large load
rpm
ref
Time

11. 2. Unbalance Sensing theory
* During spin cycle, if total amount of rpm changing (speed changing) is over the allowed level
which is set in the Micom, the washing machine starts an untangling cycle. ( i.e, if the Micom
decides that the load is out of balanced, the washing machine starts the untangling course.)
* If the total amount of rpm changing ( Δspeed changing) is still incorrect after the untangling
course has been carried out the required times, it displays the “ UE” error message.
rpm
3.Period getting the
eccentricity Data
4.Spinning
start
100 rpm
Sensing
period
50 rpm
2.Untangling
O.K
5sec.
10sec.
5sec.
5sec.
1.Rinsing finish
/Spinning start
12sec.

12. 2. Suds-Free System
Improve “wash/rinse” and “spin” performance by detecting
and removing excessive suds in the drum

13. Fill in water for 1minute
2. Suds sensing function
During Washing cycle
Suds sensing during washing cycle is done by water level change regardless of motor operation.
If frequency is lower than 23.3KHz, the machine decides it as a suds problems.
In Perm press, Delicates, Wool/Silk, or Hand wash cycle, it does not work.
Sensing and removing Suds during Washing cycle
Washing Process
Lower than
23.3KHz
Draining for 1minute
Breaking for 2minute
3times
Fill in water for 1minute
Total Required time : about 12minutes
Finish

14. 2. Suds sensing function During Spinning cycle 3times
Sensing and removing Suds
during Spin cycle
During Spinning cycle
• The micom recognizes it as suds problem when: 1) the spinning speed does
not reach 270rpm in 10 sec.
2) the water pressure is
lower than 24.0kHz during intermittent spin.
3) the water pressure is
lower than 24.4kHz during high speed spin.
• When suds is detected, spinning is stopped and the Suds remove program is started. And then the Water supplying and draining are proceeded until suds is not detected.
Spinning Process
Suds sensed
Fill in water
for 1 minute
Breaking for 2minute
Drain for
2 minute
Finish
3times

15. 2. High Cleaning Performance
RollerJets
Circulation System
The washing balls increase cleaning power by
shooting out water this decreases laundry
rubbing together and thus reduces damage to
your laundry.
It is Circulation Shower System that sprays
water from the top down decreasing water,
detergent and energy consumption while
at the same time increasing washing power.
Heavy Lifter ▶
Powerfully lift
a bulky laundry
Shower Connector
Hole ▶ Shower Fn.
(At peak point)
Ball ▶Bearing Fn.
(Decrease rubbing)
Inside of the drum

16. Largest washer with dryer
2. Condensing Dry system
A condensing dryer takes the moist air released from your laundry and mixes it with cool air. This process returns the moisture to water, which is pumped away to a drain line. The some of steam is away througth the dispense and vent.
Largest washer with dryer
Performance
10kg washer with dryer
is first in the world.
Use less condensing water than any
other washer with dryer.
High dry performance
High energy efficiency
2-step safety equipment 1 3 2 4
1:dry duct
2:tub
3:fan
4:condensing duct

17. 3. Water Circulation ●Feature ●Working Description Drain Pump
Circulation Pump
Shower Connector
●Feature
1) Spray detergent solution
and water onto the load
over and over.
2) Clothes are soaked more
quickly and thoroughly during
wash cycle.
3) The detergent suds can be
removed more easily by the
water shower during
rinse cycle.
4) Uses both water and detergent
more efficiently.
5) Is used to wash inside of the
door window.
Inside of the drum
●Working Description
1) During Wash cycle:
0~3 min - Pump On
3~10 min - 20 sec On
10 sec Off
2) During Rinse cycle:
always On
3) Start operation after water is
supplied

18. 3. Door Lock Switch ●Feature Unlock ②Lock ①Lock ●Working Description
1) Normally be unlocked, so that
the washer can be opened by
hand even if the washer has
no power supply.
2) Instantaneous locking/
unlocking.
3) Enable to open from inside
for safety.
Unlock
②Lock
①Lock
●Working Description
1) Stop →Operation:
1 pulse applied to Lock
2) Operation →Stop:
2 pulses applied to Unlock
* Power failure during operation:
lock for 5 min
●The door cannot be
unlocked if:
1) The drum is moving.
2) The water temperature exceed
45 degrees C.
3) The water level exceed a
certain point.

19. 3. Ball Sensor ●Feature Ball Sensor ●Working Description
HOLE
BALL
CASE
TR(Sensing light)
DIODE(emitting light)
light
●Feature
1) Detects unbalanced load.
2) Prevents a striking/walking.
3) Drum stops if excessive
vibration occurred and then
tub hits the ball sensor.
Ball Sensor
●Working Description
1) Senses within 60~300 rpm during spin.
2) If the tub hits the ball sensor then drum stops rotating and
rebalance the load.
3) Sensor detects out-of-balance and makes loads balanced to
achieve lower noise and vibration.

20. 4. Control Panel 1 2 3 4 8 9 6 7 10 5 DOOR LOCKED lamp EST. TIME
REMAINING 2
STATUS
INDICATOR 3 4
POWER
button
WASH/RINSE temp.
SPIN SPEED
SOIL LEVEL
button 8 9 6
CYCLE SELECTOR knob
START/PAUSE button 7
DRY
button
CUSTOM
PROGRAM
button 10 5
OPTION
buttons
CHILD
LOCK

21. 5. Test Operation * BEFORE PERFORMING SERVICE
① Preparation for washing
② Press the POWER button
③ Press the
START/PAUSE button
④ Check the water supply
⑤ Check automatic reverse
turn
Connect the power plug
to the outlet.
Connect the inlet hose.
In case of NORMAL
program.
Check if water is suppied
through the detergent
dispenser.
Check if the drum rotates
clockwise and
counterclockwise.
Listen for clicking
sounds to determine
if the door has locked.
⑧ Power off and open the door
⑧ Press the START/PAUSE
button
⑦ Check drain and spin
⑥ Check the water heating
Press the POWER button twice
the restart.
Press the SPIN SPEED button.
Press the Start/Pause button.
If SVC is needed during check,
remove the remaining water by
pulling out the hose cap.
Listen for clicking sounds to
determine if the door has
unlocking.
Press the WASH/RINSE button
and the present temperature will
be displayed.
* BEFORE PERFORMING SERVICE
1. Be careful of electric shock when disconnecting parts for while troubleshooting.
2. The voltage of each terminal is 120V AC and DC when the unit is plugged in.
3. First of all, check the connection of each electrical terminal with the wiring diagram.

22. 6. Wiring Diagram
Fan motor

23. 7. QC Test Mode
* The washer must be empty and the controls must be in the off state.
** Even if you press the button to check inlet valve, inlet valve does not operate until the drum completely stop from spinning.

24. 8. Error Display

25. 8. Error Display

26. 8. Error Display

27. 9. Troubleshooting

28. 9. Troubleshooting

29. 9. Troubleshooting

30. 9. Troubleshooting

31. 10. Disassembly instruction

32. 10. Disassembly instruction