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WASHING MACHINE SERVICE MANUAL
CAUTION ! BEFORE OFFERING SERVICE, READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLES CORRECTLY.
MODELS : WD-6021 C WD-8021 C WD-1021 C WD-6022 C WD-8022 C WD-1022 C
(54CM, 600RPM) (54CM, 800RPM) (54CM, 1000RPM) (45CM, 600RPM) (45CM, 800RPM) (45CM, 1000RPM)
LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
INDEX
ITEMS PAGE
1-Technical Specifications 2-Controller and Washing Machine Models 3-Operation / Set-up the Washing Machine 4-Operation / Grouping the Cloths and Loading the W/M 5-Operation / Starting the W/M 6-Operation / Options 7-Operation / Unloading the Machine 8- Care and Maintenance 9-Components 10-Disassembling 11-Fault Signals and Diagnoses 12-Controller and Cable Harness Drawings 13-Exploded Drawings
3 6 7 9 10 13 14 14 17 22 33 46 50
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
1-Technical Specifications
1. Product Specification 1.1. Producer 1.2. Model 1.3. Dry Load Capacity 1.4. Number of Program 2. Dimensions 2.1. Height 2.2. Width 2.3. Depth 2.4. Water Inlet Hose Length 2.5. Water Outlet Hose Length 3. Packaging 3.1. Material 3.1.1. Outer Package 3.1.2. Supports 3.2. Dimensions 3.2.1. Height 3.2.2. Width 3.2.3. Depth 4. Weight 4.1. With Package 4.2. Without Package 5. General Technical Specifications 5.1. Voltage / Frequency 5.2. Total Power Consumption 5.3. Fuse Current (V/Hz) : 220-230V / 50Hz (W) (A) : 2200 2350 : 16A (Kg) (Kg) : 62 (Standard), 59 (Slim) : 60 (Standard), 57 (Slim) (mm) (mm) (mm) : 875 (Standard) ; 875 (Slim) : 647 : 597 (Standard) ; 507 (Slim) : Carton Box : Polystyrene foam (mm) (mm) (mm) (mm) (mm) : 850 : 595 : 540 (Standard) ; 450 (Slim) : 1500 : 1500 (Kg) (Qty) : Arçelik A.. Çayirova/STANBUL : Micom2-Intello Washer : 5 kg (Standard) ; 4.5 kg (Slim) : 100
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
6. Power Chord 6.1. Type 6.2. Isolation 6.3. Plug 6.4. Length 7. MOTOR 7.1. Type 7.2. Power consumption 7.3. Speed (wash) 7.4. Pulley diameter 7.5. Isolation 7.6. Speed control 8. Pump 8.1. Power 8.2. Flow Rate 8.3. Pumping Height 9. Heater 10. Water Inlet 11. Body 11.1. Material 11.2. Coating 12. Drum 12.1. Material 12.2. Volume 12.3. Washing rate 12.4. Spinning rate 12.5. Front cover hole diameter (lit) : Stainless Steel : 43 (Standard) ; 39 (Slim) (RPM) : 50 ±2 (RPM) : 600 / 800 / 1000 (mm) : 300 : Steel sheet : Acrylic, alkali resistant oven paint (W) (m) (W) (Cold) (Hot) : 34 :1 : 1900x1 over heat protected type : Triple valve : Single valve (It/min) : 12-17 (W) (mm) : Mono phase, UM / AC : 250 / 730 (wash / spin) : 18.8 : Rotor class F ; Stator class F : Electronic speed control (RPM) : 8200 (mm) : 3*1.5 mm2 copper conductor : TS 936 FVV-n cable : Earthed, PVC injection : 1700
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
13. Tub 13.1. Material 13.2. Volume 14. Damping System 14.1. Spring 14.2. Frictional damper 14.3. Counter weight 14.3.1. Material 14.3.2. Weight (Up/Down) 15. Control System 15.1. Controller 15.1.1. Display Board 15.1.2. Main Board 15.2. Thermostat - NTC 15.3. Solenoid valve operating pressure 15.4. Water pressure sensor 15.5. Wash Programs 15.6. Options 15.7. Selections : 220/230 V, 50 Hz. : 24 LED ; 7 switches ; 1 Program Dial 1 7segment Display : Program and motor controls : Tn-60C : 0.3-10 Bars : Output-kHz (Qty) : 6(Cotton, Synthetic, Delicate, Hand, Woll, Quick, Rinse+Spin, Spin, Pump) (Qty) (Qty) : 4 (Bio, ECO, Rinse plus, PreWash) : 4 (TimeDelay, Easy Iron, Spin, Temp.) (Kg) (Qty.) (Qty) (Qty) :2 :2 :2 : High density concrete : 21 (lit) : %20 Talk reinforced PPTV20 : 58 (Standard) ; 53 (Slim)
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
2-Controller and Washing Machine Models
Micom series washing machines are divided by three variables as follows Cabinet size and Dry Load capacity (Standard size-5kg / Slim size-4.5kg) Water inlet (Cold only / Hot&Cold) Max. Spinning Speed (1000 / 800 / 600)
Different combinations of these three variables leads to twelve (12) different models listed below. Load capacity and spin speed can be changed by DIP switch within same water inlet type.
Models WD 1021C WD 8021C WD 6021C WD 1022C WD 8022C WD 6022C WD 1021CH WD 8021CH WD 6021CH WD 1022CH WD 8022CH WD 6022CH
Part No Controller 2808290100 2808290100 2808290200 2808290200
DIP Switch Positions 0000 1000 0100 0001 1001 0101 0000 1000 0100 0001 1001 0101
Table-1
Dry Water Load Inlet 5kg Cold only 4,5kg 5kg Hot & Cold 4,5kg
Adjustable Spin Speeds 1000/800/400 rpm 800/600/400 rpm 600/500/400 rpm 1000/800/400 rpm 800/600/400 rpm 600/500/400 rpm 1000/800/400 rpm 800/600/400 rpm 600/500/400 rpm 1000/800/400 rpm 800/600/400 rpm 600/500/400 rpm
This Service Manual is related to the all Micom models that are shown in the Table-1.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
3-Operation / Set-up the W/M
Placing the Washing Machine: The transport safety bolts must be removed before any operation of the machine (Figure1). Bolt heads, marked as "C", should be turned counter-clockwise direction and loosened with a proper tool. Plastic taps, supplied inside the protective bag and designated as "P", should be placed to the safety-bolt holes according to the direction being showed. Please keep the safety bolts for future transportation and place them before transporting your machine
Figure-1 The machine is configured to operate at 220VAC, for this reason if the power supply is 110VAC, a 3000Watt 110/220V transformer should be used. If the fuse current is less than 16Amps a certified electrician should install a 16Amp fuse. Voltage and current requirements are specified on the rating plate on the back cover of the machine. In order for quiet and stable operation, the machine should be placed properly and leveled on its feet. Your machine comes with two adjustable feet. If the machine is unstable, loosen the plastic counter nut and screw or unscrew the adjustable foot until the machine is levelled perfectly (Figure-2). After positioning, tighten the counter nut for stability.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Figure - 2 Water Connections: For proper operation, the pressure of water should be between 1 and 10 ATM. (1 ATM corresponds to more than 8 litres per minute flow rate at fully open tap.) To prevent water leaks sealing washers are supplied with the water inlet hose(s). Place the hose and tighten both ends fully. In order to prevent any water leak damages, keep the water taps closed when not in use. Connect the cornered end of the hose to the machine water inlet. Connect the cold water using the hose with blue printing and connect the hot water using the hose with red printing. Water drain hose could be placed either at the side of the bathtub, or directly to the drain. The hose should not be bent. Water drain hose should be secured with the elbow so that it would not fall down on the ground. The hose should be placed between 40 and 100cm from the ground. Water drain hose could be placed directly to the drain water inlet. Before any operation of the machine check the followings: · Is the tap open? · Is the water outlet hose properly installed? · Is power connected? · Is the front door closed?
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
In order to open the front door pulls the holder (Figure-3). To run the machine, front door should be closed, program and other options should be selected and Start/Pause button should be pressed.
Figure-3 Due to the quality control process during production, there may be some water left over in your machine. This does not cause any damage to your product. So the hence operation for the first time should be empty. One portion powder detergent should be put into the second compartment of the drawer. Program "Quick30" should be selected and cold position of the thermostat should be adjusted and the machine should be run as such.
4-Operation / Grouping the cloths and Loading the W/M Sort the laundry according to the following groups and wash them separately: · White and resistant colored fabrics, · Colored fabrics, · Delicate fabrics (silk, rayon etc.), · Wool. Make sure to empty pockets and remove any belts, buttons, pins, etc. from the clothing. Place the fabrics uniformly inside the machine. Hand knits should be placed inside out in the machine. Make sure that there is no clothing at the side of the door. Close the door by pushing lightly. If the door does not close completely, the machine could not be started at safety measure. Front door is locked until the end of the washing program and it will not be opened about 2 minutes following the end of the program.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Do not attempt to use detergents and bleaching elements that contain chlore and sulphur. The amount of the detergent depends on the dirt level of fabric, the amount of fabric and the softness of the water. Choose the appropriate detergent specifically used at the full automatic washing machines Suggested amount is given on the detergent cover. If small amount of clothing is placed in the machine, put half the amount of detergent required for normal wash.
5-Operation / Starting the W/M Place your clothes into the machine and close the front door. Select the program after referring to the program selection table. Push the POWER button to turn on the washing machine. Program LEDs are turned on.
Figure-4: Control Panel
Program Selection: Turn the Program Dial to select the program you require. The LED of the selected program will be turned on to guide your selection. Figure-5: Program Dial
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
90 60 40 30 Cold
Temperature Selection: The suitable washing temperature is suggested by the program selection. Using "Temp." button, you can select final temperature up to 90C in Cotton, up to 60C in Synthetics, up to 40C in Delicate, Wool, Hand Wash and Quick30 programs. If you don't want to heating, you can select also Cold wash. Spin Speed Selection: The suitable spinning speeds are suggested by the program selection.
Temp.
1000 / 800 / 600 Using "Spin" button, you can select final spin speed up to 1000rpm. 800 / 600 / 500 400 / 400 / 400 No Spin Rinse Hold
For 800rpm models, final spin speeds can be selected up to 800rpm in all
programs. (800 600 400 No Spin) For 600rpm models, final spin speeds can be selected up to 600rpm in all programs. (600 500 400 No Spin) If you don't want to spinning at the end of the program, you can select also "No Spin".
Spin Rinse Hold: If you desire to leave the clothing in the machine with water after wash program you may select the Rinse Hold. This option will prevent them getting wrinkled. To continue the program selects Drain program to discharge the water or another program that you require. Option Selection: By pressing the Option Button, only one option function may be selected. The required lamp will light up for identification. Bio Option: If you want to eliminate protain stains (milk, blood, chocolate..) you may Option select Bio function by pressing option button. You may select Bio function when temperature is higher than 60C in cotton and synthetic.
Bio Rinse + Eco Pre Wash
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Rinse Plus: Used to additional rinse, which may assist in removing traces of detergent residue. By selecting Rinse Plus function, the Rinse Time and Rinse Water are incrased. Eco: By selecting Eco function, the water temperature is reduced and washing time is lengthened. So you can economize in your consumption of heating energy. You can select Eco function when temperature is higher than 60C in Cotton and Synthetic. PreWash: If the laundry is heavily soiled, "PreWash" course is effective. PreWash is avaible in Cotton and Synthetic. Easy Iron: If you don't want to wrinkle the laundy, you may select Easy Iron option.
Starting The Washing Cycle Select the washing program, which is appropriate your laundy by turning Program Dial. Adjust the temperature and spin speed by pressing buttons to set the washing cycle. Options can be selected if needed. Put powder detergent and the fabric softener to the compartments and close the detergent dispenser. If the fabric softener is added in the softener compartment, it will be used in the last rinse cycle. After the selections are completed to start the program push the Start/Pause button. Start/Pause sign is blinking in green when the machine is ready to start or paused, which is on the display. Start/Pause sign will be turn on when the machine is running. To stop the machine during the program by pressing the Start/Pause button again. Front door will be locked and the Door Lock sign will light up in red.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
6-Operation / Time Delay and Child Lock Time Delay Preparing washing before starting "Time Delay" -Turn on the water tap -Load laundy and close the door -Place the detergent and fabric softener in the drawer
How to set "Time Delay" Press Power button; turn the Program Dial to select the program you require. Press the Time Delay button and set the desired time. Press the Start/Stop button (":" blinks) If Time Delay button is pressed, "3:00" is displayed. The maximum delayed time is 19:00 hours and the minimum time is 3:00 hours. Each pressing of the button advances on time delay by one hour. To cancel the time delay, press Power button. Time Delay is "Expacted Time" from present to completion of washing cycle or selected process. According to the condition of water supply and temperature, the delayed time and the actual washing time may vary. Time Left When you select a program or any option, expacted program duration will be displayed on the display. "Time Left" shows the estimated program completion. This time will reduce during washing process.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Child Lock
During washing, in order to prevent any interruptions by mistakenly pressed button there is a Child-Lock option, as a safety measure. To activate the Child-Lock press the "Spin" and "Option" buttons at the same time for three seconds after the washing process has been started. The Child-Lock will lock all fuctions and buttons excluded Power button. When the child lock active, CL mark will be displayed on the display instead of time. To open the front door at the end of the program or to interrupt the program during the process you have to deactive the child lock. To decative the lock you have to press the Spin and Option buttons at the same time again. The child lock can be set any time and it is automatically canceled when operational errors occur. Also child lock works when Power is off to prevent unexpected working.
7-Operation / Auto-Off and Unloading Machine stops automatically after the programs are completed and buzzer bips 7 times. When the washing cycle is finish, the "EnD" sign will be appered on the display. Front door can be opened 1-2 minutes after the end of the program when the Door Lock sign is turned off. Turn off the water tap. Unload the machine and leave the front door open to air the machine. To open the front door pulls the handle gently. If the door is not open, please wait a minute for realings the door lock.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
8-Care and Maintanence
To clean the detergent residues, remove the detergent dispenser from its place by pressing on the area marked on siphon. Wash the dispenser with water and also clean the dispenser housing before inserting the dispenser to its place.
Figure-6 Clean the siphon (colored piece in the dispenser) every 30-40 washes. Pull out the siphon by holding from its edges. To prevent clogging, clean the softener residues thoroughly and make sure that the siphon fits into its place completely before any operation. Do not leave any metal objects (pins, needles, etc.) inside the drum. These objects may cause rust on the drum surface. Do not clean the drum with scratching elements. At the end of the water intake connection module there exists a filter. These filters prevent any dirt and objects passing into the machine. It is advisable that these filters should be cleaned every 30-40 washes. To clean these filter, first turn the tap off. Then, disconnect the hose and clean the filter with a thin brush. If the filter is very dirty, you may clean it by pulling out with pliers. To prevent any leakage, have a technician control the hoses every two years. If the machine is placed at cold ambient temperatures, the water remaining inside the pump and hose should be removed from the filters. Also to prevent freezing, empty the water intake hose by disconnecting from taps.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Cleaning the Pump Filter To prevent objects entering into the pump, your machine comes with a filter system that extends the pump life. It is advisable that you should clean the filter at every 30-40 washes. Before opening the filter door, disconnect the power. Open the kick plate cover with a help of a coin (figure: 7). Place a little pan in front of the filter door to prevent a little amount of water spilling from the machine. Remove the filter by turning it counter-clockwise direction (figure: 7). After cleaning the objects on the filter, place it by turning clockwise and make sure that it is closed firmly. Close the kick plate cover by pushing. If the filter does not fit into its place, water will leak out from the filter.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
9-Components
Mechanical Parts: The tub is made of special plastic material. The tub cover is also made of plastic and is attached to the tub with special fixing clamps. The main motor is attached to the tub with two rubber grommets and a bolt. Placed behind the tub (on the right and the left and one on the top) are three transport security bolt connection slots. One on top and one under the tub, there are two concrete counterweights. The tub group is hooked onto the body from the sides by two springs. There are two horizontal shock absorbers at the bottom. The drum is made of stainless steel. Dynamic system: The tub is hooked onto the body with two springs. Besides, the tub is attached to the body from the bottom by two friction type shock absorbers. The duty of the springs and the shock absorbers is to conduct the vibrations caused at the tub to the body in order to damp the motion and noise of the washing machine. Program Controller Group (PWB): The module is made up of a circuit that controls the all components of machine according to the selected programs. The all connections are made by coloured sockets to prevent the wrong connections. PWB made by two parts, Main part and Display part. Main part is coated with insulated material to prevent the board from environmental conditions. Display part includes the one Dial Encoder for select the programs, LEDs and 7segment display are indicate the selections, micro switches help program settings. Main motor: The main motor is a universal series motor. It is controlled by on electronic module. The motor speed is adjusted as the triggering angle of the bridge diode on the module depending on the tacho signal.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Triple Solenoid valve: There is a triple solenoid valve to direct the water to the appropriate detergent drawer compartment. Water flow is directed to the pre-wash drawer in Pre-Wash programs by prewash valve, water is directed to the main wash detergent drawer in Main-Wash and Rinse programs by main-wash valve. At the final rinse, water is directed to the softener drawer by softener valve. There is a regulator inside the softener valve to reduce the flow rate.
Single Solenoid valve: There is a single solenoid valve for Hot Water connection for dual inlet models. Hot water flow is directed to the Main-Wash drawer of the detergent drawer. The PWB/controller controls this valve for hot water inlet according to the program and temperature selections.
Pressure Switch Sensor: The output frequency of the sensor changes by the water level. The valves operate to reach the required water levels. If pre-defined frequency level reaches, the valves close by the PWB/controller. Heater: A 1900-watt heater is used. There are two thermo fuses on the heater. If the heater runs without water inside the tub, the thermo fuse cuts off the line to protect the plastic tub damages because of the over heating. The thermo fuses are not reusable, if the thermo fuse cut off the line. Heater is controlled by a relay inside the PWB. Door lock: PTC door-lock is used. When the door is closed, the PTC disk is healed up hence the door is locked. After the program is terminated, the PTC is cooled down in max.70 seconds and the door is released. Thus the door is prevented from opening during operation. The machine does not operate when there is a problem with the door lock.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Pump motor: It is a Mono-phase synchronous motor. Current is conducted from the program apparatus at empty-water phase. Thermostat: Controls water-temperature in the tub with a NTC (P/N: 2804980100). The resistance of NTC changes by the temperature. The PWB controls the resistance of NTC and calculates the tub temperature. The heater is worked to reach selected temperature and controlled by PWB. NTC resistance values versus environment temparature are given in the following table.
Temperature 0C 10 C 25 C 60 C 90 C
NTC Resistance 15.6 kOhm 9.5 kOhm 4.77 kOhm 1.2 kOhm 440 Ohm
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
10-Disassembling
1- Top lid: -Two screws that attach the top lid to the body are unscrewed. -Top lid is pushed to the back and then upward and taken oft 2- Back cover: -Five screws that attach the back cover to the body are unscrewed. -The cover is layer 90º to the body and let loose of the bottom side snap. 3- Kick plate: -Open the kick plate cover and remove the screw that attach the kick plate to the body. Release the hooks that are placed each side of the kick plate to fit the body (Figure-7) 4- Front panel: -Front door is opened by handle. (Figure-3) -The bellow clamp that fixes the bellow to the front panel is taken of using the special pliers (Figure-8). -The bellow is released from the front panel
Figure-8
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Figure-9 -Two screws that attach the safety lock to the front panel are unscrewed. -Kick plate is disassembled (Figure-7). -The three screws that attach the front panel to the body from the bottom are unscrewed (Figure-9a). -Front panel is pulled down and released from the fixtures on the body (Figure-9b). 5-Front door: -Open the front door; two screws (M5*10) that connect the front door to the hinge are unscrewed. 6-Inner cover of front door: -Front door is disassembled. -The nine screws that attach inner cover to the front door are unscrewed. -The two screws that attach hook cover to the front door are unscrewed. -Remove the inner cover from the front door.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
7-Front door glass: -Front door is disassembled. -Inner cover and hook cover are disassembled. -Front door glass is removed from the snaps on the front cover. 8-Lock Hook: -Front door is disassembled. -Hook cover is disassembled. -Lock hook is released from the shaft on the inner cover. 9-Hinge: -Front door is disassembled -Two screws that connect the hinge to the front panel are disassembled. 10-Drawer panel: -Drawer is pulled back from the detergent box. -The piece shown by the arrow is pressed and the drawer is pulled back (Figure-6). -Drawer is turned upside down and the holders of drawer panel are released from the drawer. 11-Panel: -Drawer is removed from the detergent box. -The screw that attaches the panel to the panel frame is unscrewed (Figure-10). -Panel is released from the snaps on the panel frame (Figure-11).
Figure-10
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
12-PWB / Controller: -Top lid is removed. -Detergent drawer and panel are removed. -The sockets that are connected to the controller are removed (Figure-11a). -The six screws that attach the controller to the panel are unscrewed. (Figure-11b) -The controller is pulled up from panel body. -Take care of when replace the controller; LED windows are placed correctly and controller is well placed on the panel. Sockets Snaps
Figure-11a
Screws
Figure-11b
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
13-Presurre switches: -Top lid is disassembled. -The socket of pressure switch is removed by pressing the socket snap (Figure-12). -Two screws that attach the pressure switch to the body are unscrewed (Figure-12).
Screws
Socket Figure-12 14- Single valve: -Top lid is disassembled -Single valve cables are disconnected -Single valve hose clamp is driven back on the hose -Hose is removed at the end al the valve -Valve is turned left after, below the body, the snap that fixes the valve to the body is pushed inside with a screw diver. 15-Triple valve: -Top lid is disassembled -Triple valve cables are disconnected -Two screws that attach the body to the triple valve are unscrewed. -Triple valve hose clamps are driven back on the hose -Hoses are removed at the end al the valve
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
16- Interference Suppressor: -Top lid is disassembled -Interference suppressor cables are disconnected. -Two screws that are placed in the plastic box behind the body that comet the interference suppressor to the terminal group are unscrewed. 17-Door / Safety lock: -Door is opened (Figure 4). -Bellow clamp that fixes the bellow to the front panel is removed and bellow is disassembled from the front panel (Figure 8) -Two screws that attach the door lock to the body are unscrewed. -Front panel is removed -The door lock socket is released from the door lock. 18-Heater: -Front panel is disassembled and Heater cables are disconnected (Figure-13b) -Heater M6 bolt is loosened and Heater is released through the tub cover (Figure-13c) (When mounting, the heater should be connected to the heater fixture wire in the tub).
a c b
Figure-13
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
19-Pump: -Front panel is disassembled. -Pump cables are disconnected (Figure-14a). -Tub filter hose is released from the pump. -Outlet hose is released (Figure-14b/c). -The screw that attaches the pump to the body is unscrewed (Figure-14d). -Pump is turned and removed.
a b d c
Figure-14
20-Thermostat bulb rubber: -Front panel is disassembled. -Thermostat bulb is released from the tub cover. -Thermostat bulb rubber is pulled by hand from the tub cover (Figure-13a). (When mounting, thermostat bulb rubber should be fit well into its place in the tub cover)
21-Tub bellow: -Front panel is disassembled. -The clamp that fixes the bellow to the tub cover is loosened -The bellow is pulled off by hand (When mounting, the bellow holes should match the lower part of the tub cover)
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
22- Poly-V Belt: -Back cover is disassembled -Poly-V belt is pulled off while turning over the pulley (Figure-15)
b a C
Figure-15
23- Water inlet hose: -Front panel is disassembled. -The wire clamp on the detergent box connection is opened and the water inlet hose is released. -The other end of the water inlet hose is pulled off the tub cover by hand. 24-Pulley: -Back cover is disassembled and Poly-V belt is removed (Figure-15) -The bolt that connects the pulley to the tub shaft is unscrewed (Figure-15b) -Pulley is pulled off from the tub shaft.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
25-Motor: -Back cover is disassembled -Motor socket is plugged out of the motor -Poly-V belt is removed (Figure-15) -The bolt that attaches the motor to the tub is unscrewed (Figure-15c) -Motor is released from the motor fixture rubber. 26-Power supply cord: -Terminal group cover is released from the snaps at both sides (Figure-16) -Cable holder screw is loosened -Power supply cord earthling screw is unscrewed -Power supply cord is removed by unscrewing the terminal-end screws.
Figure-16 27-Upper counterweight: -Top lid is removed. -Upper counterweight screws are unscrewed and counterweight is polled off. 28-Lower counterweight: -Front panel is disassembled. -Lower counterweight screws are unscrewed and counterweight pulled off.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
29-Tub seal: -Front panel is disassembled. -Lower counterweight is removed. -Heater is removed (Figure-13) -Thermostat bulb is removed (Figure-13) -Tub cover clamps are released -Tub cover is pulled off and turned upside down -Tub seal is removed. (When mounting, tub seal connection part should match the mounting part on the tub cover) 30-Drum group: -Front panel is disassembled -Tub cover is removed -Back cover is disassembled -Pulley is disassembled -Drum is pulled off the tub 31-Shock absorber: -Back cover is disassembled -Damper pin at the tub is pulled off pressing on the snaps (Figure-17) -Damper pin at the body is pulled off (Figure-17)
a
Figure-17
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
32-Outlet hose: -Front panel is removed (figure 8,9,10). -The clamp at the pump entry of the outlet hose is sliced back. -Outlet hose is pulled off the pump -The hose is released from the snaps at the back of the body -Hose is released from the front of the machine.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
11-Fault Signals and Diagnoses
1- Error Display Function When an Error occurs the buzzer sound will worn customer and an Error code will be displayed on the display. During the Error occurs Start/Pause button or Power button makes Error massage released. (When you push the Start/Pause button that makes it the Pause, when you push the Power button it became Power Off.) If the Error doesn't release, Pressure Sensor Error and Washing Heater Error turn off automatically after 20sec. The other Errors turn off automatically after 4min. The Display shows the Error code. Only the Over Flow error doesn't turn off automatically. Error Mode 1 Inlet Valve Error Display IE 2 Drain Pump Error 3 Over Flow Error 4 Water Level Sensor Error 5 Door Error 6 Washing Heater Error 7 Unbalance Error FE OE PE dE TE UE Occurrence Cause . When water supply doesn't reach at 24.8kHz for 8min. . When water doesn't reach at the water level of destination for 25min. . When water level doesn't reach empty level for 8min. . When water level is over 8th level (over flow level) . Water level sensor is out of order. (open or short circuit) . When the machine is started with open door error occurs after 16sec. . When the NTC thermistor of washing heater control is open (-20C) or short circuit (98C). Except the Spin. . When it happen eccentricity on Spin course after distribution course. . When Unbalanced load happens the simplicity Spin on Wash and Rinse course, error doesn't occur and passes the next course The error is sensed on the Q-Test 1st mode and occurs only Q-Test mode. When the motor cannot rotate till 120sec is reached the total running time of motor.
8 EEPROM Error 9 Motor Blocked Error
EE SE
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
2- Test Programs a) QC Test Mode When pressing the Spin and Temp buttons at the same time, press the Power button. Then buzzer sounds twice and QC test mode starts. Press the Start/Pause button, as the following tests will be start. [Press the Start/Pause button more 4 times until stop spinning completely.] Number of pressing START/PAUSE button None 1 Time 2 Times 3 Times 4 Times 5 Times Checking Point All lamps turn on Counter-clockwise spinning (left) Low speed spinning High speed spinning Pre-Wash inlet valve works Main-Wash inlet valve works Main-Wash inlet for Cold only models Hot water inlet for Hot&Cold models Softener inlet valve works Clockwise spinning (right) Display Status PCB option code will be displayed Motor rpm Motor rpm Motor rpm Water level frequency Water level frequency Water level frequency Water level frequency Water level frequency Motor rpm
6 Times
7 Times 8 Times 9 Times 10 Times 11 Times
Heater is operating for Water temperature 3sec. Draining pump operation Auto-Off operation Water level frequency All lamps turn off
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
PCB Option codes in QC Test Mode:
SIZE 5.0 kg
MODEL 1000 rpm 800 rpm 600 rpm
Display Code 18:81 18:82 18:83 18:89 18:8A 18:8b
PCB Code 6871EC10XXA,G 6871EC10XXB, H 6871EC10XXC, J 6871EC10XXD, K 6871EC10XXE, L 6871EC10XXF, M
4.5 kg
1000 rpm 800 rpm 600 rpm
b) Life/Compulsion Test Mode Pressing the Rinse and Spin buttons at the same time, press the Power button. Then buzzer sounds twice and QC test mode starts. Option function cannot be set at the mode of life test and compulsion test. Life test and compulsion tests can be selected by pressing the Option button.
Display 18:88 tSt
Test Mode QC Test Mode Compulsion mode
Operation All LED turn on All processes are performed regardless of water level. Only washing is repeated when wash is chosen The program chosen is repeated.
000
Life test mode
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
PROBLEM SOLVING SCHEME
Machine Doesn't Work
Are the leds on the panel lighting?
Y
Are the buttons on the panel working?
N
Did the connection cables mount on position?
N
N Check the mains fuses
Y
Y Check the connection cables and sockets
N
Is it 220V on the mains?
Is there water inside the machine? Y
N
Change the controller
Y
Plug in the mains cable
N
Is the mains cable pluged?
Look at the "No Wash Action"
Look at the "No water inlet" or "No Draining"
Y
Change the plugs or mains cable
N Are the cable and plugs right? Y
Check the connections and change the controller
Y
Is the Power button working?
Check the Child-Lock option.
N
Check the sockets and cables
N
Is the connenction cable between controller and mains right?
Y
Change the timer board
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
No Water Inlet
Close the door
N
Is the Front door closed?
Y Main water pressure should be bigger than 0.3Bar
N
Main water pressure bigger than 0.3Bar? Y Start the Service Program
Start the water inlet tests
N
Check the valve coil voltage for220V ? Y
Y
Failure continue?
N
Run the pump and take out the water
Change the controller
Check the pressure switch and connection? Valve coil is open curcuit or valve filter fiiled. Clean up the filter Change the valve
Y
N Check the air hose of pressure switch Connection cables are open circuit or short circuit. Check the cables. Check the timer board socket housings.
Change the pressure switch
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Machine couldn't stop the water inlet
Main water pressure is bigger than the 10Bar?
Y
Water inlet valve couldn't stop the water, if the main pressure bigger than the 10Bar
N
Check the pressure switch connections and hose
N
Check the pressure switch and connected hoses
Y
Y Check the valve voltage for 220V
Check the cables. Change the controller
N
Change the water inlet valve
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Pump doesn't work
Y Is the pump motor running?
Pump filter is stucked. Clean up the filter
N Take out the pump cables than check the pump coil resistance
Is the coil open/short curcuit?
Y
Change the pump motor
N
Y Check the pump cables for 220V
Change the pump motor
N
Check the connection cables than change the controller
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Pump doesn't stop
Is the water level reached the security level?
Y
Look at the "Machine couldn't stop the water inlet"
N
Y Is there water inside the machine ?
N Start the Service program and start the pump test
N Check the cables than chage the controller Pump stoped at the end of the test? Y Check the cables than change the pressure switch
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
No Heating
Start the Service program
Start the water inlet tests to get the heater starting water level (Gasket upper side level) Start the heater test.
Y Is the heater working ?
Check the Pressure s/w connections. Change the Pressure switch
N
Is the heater relay on the controller working? Y
N
Change the controller
Check the heater contacts for 220V
N
Check the cables
Y Check the heater resistance for open curcuit than change the heater
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
No Wash Action
Start the service program Start the motor wash test
N Drum turning?
Check the motor and controller connection cables
N
Y
Y
Look at the "No Water Inlet"
Check the motor coils. Change the motor or controller
Change the connection
Heater Doesn't Stop
N Check the heating relay contacts?
Change the controller
Y
Check the Pressure switch cables and contacts. Check the NTC
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Spinning at the Washing Cycle
Start the service proram Start the washing tests
Y Drum turning?
Check the cables and socket connections. Clean up the sockets
N
Pull out the motor socket and check the tacho resistance
Open or short curcuit?
Y
Change the motor
N
Check the cables for open/short curcuit
Y
Change the cables
N
Change the controller
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Heating Failures (Lower or Over Heating)
Check the mains voltage for 187V?
Y
Working voltage should be bigger than the 187V
N
N Is the plug groudded?
Machine should work in the grounded plug
Y Y Check the NTC resistance for open or short curcuit Change the NTC
N
Check the NTC cables and the sockets. Clean up the socket.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
Door Doesn't Open
N Program END?
Door can open when the program ends
Y
Check the door lock socket?
N
Repair
Y
Is the door relay working that is on the controller ?
N
Check the cables. Change the controller
E Door lock will be released after 2min than program end. Please wait for this time. Change Door Lock Check the Door HOOK, to see the stucked hook in the door lock.
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
12.1-Program Flowing Chart
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
12.2-Electrical Circuit Diagram
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
12.3-PWB Controller Scheme
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
12.4-Cable Connection Diagram
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
13-Exploded Drawings
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
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LG ( 6021C / 8021C / 1021C / 6022C / 8022C / 1022C )
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