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

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

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

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 650+650 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)

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.

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

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

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.

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

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

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.

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

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

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

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

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

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

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.

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.

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

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.

6. Wiring Diagram Fan motor

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.

8. Error Display

8. Error Display

8. Error Display

9. Troubleshooting

9. Troubleshooting

9. Troubleshooting

9. Troubleshooting

10. Disassembly instruction

10. Disassembly instruction