LG WD14030RD6 Service Manual
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LG WD14030RD6 Service Manual

LG WD14030RD6 Service Manual

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WASHING MACHINE
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS
CORRECTLY BEFORE OFFERING SERVICE.
MODEL : WD14030RD6
website :
http://biz.lgservice.com
e-mail : http://LGEservice.com/techsup.html

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  • Page 1 : http://biz.lgservice.com e-mail : http://LGEservice.com/techsup.html WASHING MACHINE SERVICE MANUAL CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS CORRECTLY BEFORE OFFERING SERVICE. MODEL : WD14030RD6...

  • Page 2: Table Of Contents

    CONTENTS 1. SPECIFICATIONS ..........................3 2. FEATURES & TECHNICAL EXPLANATION ..................4 3. PARTS IDENTIFICATION ......................... 6 4. INSTALLATION ..........................7 5. OPERATION ........................... 12 6. WIRING DIAGRAM / PCB LAYOUT ....................14 7. TROUBLESHOOTING ........................19 7-1.BEFORE PERFORMING SERVICE ..................19 7-2.LOAD TEST MODE ........................

  • Page 3: Specifications

    1. SPECIFICATION ITEM WD14030RD6 POWER SUPPLY 240 V~, 50 Hz PRODUCT WEIGHT 72 kg WASHING 170 W ELECTRICITY SPIN 500 W CONSUMPTION DRAIN MOTOR 30 W WASH HEATER 2000 W DRY HEATER 1500 W WASH 50 rpm REVOLUTION SPEED SPIN...

  • Page 4: Features & Technical Explanation

    2. FEATURES & TECHNICAL EXPLANATION 2-1. FEATURES Inverter Direct Drive system The advance Brushless DC motor directly drives the drum without belt and pulley. 6 motion Washer is able to perform various drum actions or a combination of different actions depending on the wash program selected.
  • Page 5 2-2. DETERMINE WASHING TIME BY FUZZY LOGIC To get the best washing performance optimal time is determined by sensing the water temperature, selected washing temperature and laundry amount. water temperature washing time the best selected FUZZY washing rinse time washing LOGIC temperature performance...

  • Page 6: Parts Identification

    3. PARTS IDENTIFICATION Shipping Bolts Power plug If the supply cord is damaged, it must be replaced by the manufacturer or its authorized Drawer service technician in order to avoid a hazard. Control Panel Drum Door Drain Hose Drain Plug Drain Pump Filter Adjustable Feet Lower Cover Cap...

  • Page 7: Installation

    4. INSTALLATION INSTALLATION The appliance should be installed as follows. Check the conditions of installation area. 1. Check level ground. horizontal On raised foundations or upper level homes, the vibrations can be caused by the type of flooring. It may be necessary to move machine to a different area in the home or have the floor...
  • Page 8 se spanner to remove transit bolts. Without removal of transit bolts pin noise shaking X 4 EA Transit bolts Confirm the distance between the appliance and the wall. If the distance is less than 2cm, More than 2cm the water supply hose will kink fold The tap connection and hose connection must be parallel.
  • Page 9 Connect Drain Hose. If the drain hose is not installed properly, the unit will not drain properly. This allows water to back flow into the unit which can cause odors. Refer to Owner Manual for proper drain hose installation. The odor could also be coming from the home’s drain to which the drain hose is attached. Laundry tub about 100 cm Hose...
  • Page 10 Check the horizontality with a level (Gage). Step 1 If washing machine legs are loose or not Screwed in, then tighten with the spanner wrench. Using the level, level the washing machine from front to back and side to side. A level Higher Tighten...

  • Page 11: Operation

    5. OPERATION Additional programs Cycle Selector Cycle selector Rotate the Time Delay : Allows the start of any cycle to be delayed knob to select the cycle for 3~19 hours. designed for different Medic Rinse : For best results or for cleaner rinsing, you types of fabric and soil can choose Medic Rinse option.
  • Page 12 EST. Time remaining Dry Selector knob Dry programs selected by rotating This display shows: dry knob. a) the estimated time remaining in the [Lower Temp. - Iron Dry - Cupboard cycle when operating. Dry - Eco Dry - Time(30,60,120)] In case of abormal operation, error can be selected.
  • Page 13 EST. Time remaining Dry Selector knob Dry programs selected by rotating This display shows: dry knob. a) the estimated time remaining in the [Lower Temp. - Iron Dry - Cupboard cycle when operating. Dry - Eco Dry - Time(30,60,120)] In case of abormal operation, error can be selected.

  • Page 14: Wiring Diagram / Pcb Layout

    6. WIRING DIAGRAM / PCB LAYOUT Wiring Diagram 1/3 1. DRY 5. PRESSURE SWITCH 2. C/DUCT 6. COMMON 3. WASH 7. PRESSURE SWITCH 4. AQUA 8. AG 1 2 3 6 4 5 7 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3...
  • Page 15 Wiring Diagram 2/3 1. Common 1. Pre-Wash V/V 1. Dry V/V 2. Door S/W 2. Circulation Pump 3. AG V/V 3. Main V/V 3. Hot V/V 4. Drain Pump 1 2 3 4 1 2 3 4 GND L S 8 7 6 5 4 3 2 1 SENSOR MAIN...
  • Page 16 Wiring Diagram 3/3 CON2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 GN/YL 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Relay 1 2 3 4 5 6 7 8 POWER PWB...
  • Page 17 PCB Layout (Main) ry Heater Earth Wire Connector ry Fanmotor...

  • Page 18: Troubleshooting

    7. TROUBLESHOOTING 7-1. Checking before SVC Before servicing ask the customer what the trouble is. Check the adjustments. (Power supply :220-240V~, Removal of transit bolts etc..) Check the troubles referring to the troubleshooting. Decide service steps referring to disassembly instructions. Then, service and repair.

  • Page 19: 7-3.How To Check The Water Level Frequency

    7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY Press the Favorite Option (Left) button simultaneously. The digits means water level frequency. (10-1kHz) ex) 241 : Water level frequency = 241 x 10-1kHz 24.1 kHz 7-4. HOW TO CHECK THE TEMPERATURE OF EACH THERMISTOR AT OPERATING CONDITION.

  • Page 20: 7-5.Error Display

    7-5. ERROR DISPLAY If you press the Start/Pause button in error condition, any error except will disappear and the machine will change into the pause status. In case of , if the error is not resolved within 20 sec., and in case of other errors, if the error is not resolved within 4 min., power will be turned off automatically and the error only will be blinked.
  • Page 21 ERROR SYMPTOM CAUSE • The connector in the LEAD WIRE ASSEMBLY is MOTOR LOCKED not connected to the connector of STATOR ERROR ASSEMBLY. Reconnect or repair the connector. • The hall sensor is out of order/defective. Replace the STATOR ASSEMBLY Page 31 POWER •...

  • Page 22: Ie (Water Inlet Error)

    7-6. TROUBLESHOOTING WITH ERROR Water Inlet Error (IE) [Note] Environmental safety check list 1. No water tap leakage or freeze 4. No entanglement of water supply hose. 2. No water shortage. 5. No water supply hose leakage 3. The inlet filter is not cloggeed. Is the water tap closed? Check the Water tap...

  • Page 23: Ue (Unbalanced Error)

    Unbalanced Error (UE) The few items of clothing will clump together Does the load lean toward one and their weight will be in one place on the drum, side, or is the load a few items? throwing the weight off during spin mode. So add some laundry to overcome UE error.

  • Page 24: Oe (Water Outlet Error)

    Water Outlet Error (OE) Check drain hose for kink and straighten the Hose. Is the drain hose kinked ? Drain Hose Check & Clean Pump Filter. Is the Pump filter clogged ? This kind of accumulation on the drain filter not only prevents proper drainage, but also will promote bacteria growth and cause odors.
  • Page 25 Is the Standpipe Height greater Observe Standpipe Height requirements than 1.0 m above the floor? of 1.0m maximum. - Your washer will not be able to drain out water adequately, if the standpipe exceeds 1.0 m. In this case, water may flow back into the washer. When there is no water in the Check the Air Chamber...

  • Page 26: Fe (Over Flow Error)

    Over Flow Error (FE) Inlet Valve assembly Replace the s the water coming in ontinuously drawer After power off for 10 sec. and power on. Does the water level over reference line the water level frequency 26.2Khz ? Or does the water level over reference line is the water level frequency 26.2Khz ? * Water level frequency...

  • Page 27: Pe (Pressure Sensor S/W Error)

    Pressure Sensor S/W Error (PE) Is the Connector connected correctly to Reconnect or repair the Connector. Main PCB and the Pressure Switch Or replace the Harness. Is the Harness alright ? Is the resistance of the Pressure Switch Replace the Pressure Switch.

  • Page 28: De (Door Open Error)

    Door Open Error (dE) Close the door fully. Is the door closed? Is the Door assembly in line with door switch ? Scratch by Latch Hook Touching Lift up & Close the door. If the dE is displayed, Replace the Door Bracket.

  • Page 29: Te (Thermistor (Heating) Error)

    Thermistor (Heating) Error (tE) Is the Connector connected correctly to Reconnect or repair the Connector. Main PCB and the Thermistor and the Heater? Or replace the Harness. Is the Harness alright ? Heater for Washing Heater for Steam Replace the Thermistor. Is the resistance of the Thermistor out of range 44 ~...
  • Page 30 Motor Locked Error (LE) [Pre Check] • Gentle wash cycles, such as Perm Press, Delicates, Hand Wash, and Wool/Silk should only be used for smaller loads. Because these cycles are more gentle in tumbling and spinning, putting too much in the drum can register an issue with the motor.
  • Page 31 Disassemble the Hall Sensor 1) Disassemble the hook of Hall Sensor by (-) driver. 2) Pull up Hall Sensor slowly as shown in picture. Caution If you disassemble by force,not following the directions, the hooks of stator(red circled) might break. Hence need change of stator assembly.
  • Page 32 Dry Heater Error (dHE) Is the Connector connected correctly to Reconnect or repair the Connector. Main PCB and the Dry Heater or Fan Motor? Or replace the Harness. Or is the Harness alright? Is the resistance of t.he Thermistor out of range Replace the Thermistor.
  • Page 33 Dry Heater Trouble Replace the Heater. After power off, is the resistance of Dry Heater out of range 33 ~ 37Ω? Thermostat closed ? Replace the Thermostat. When checking voltage between connectors(1,2) on drying, is the voltage AC 220-240V as the figure ? Replace the PWB assembly (main).
  • Page 34 Dry Fan Motor Trouble Is the Connector connected correctly to Reconnect or repair the Connector. Main PCB and the Dry Heater Fan Motor Or replace the Harness. Or is the Harness alright? Replace the Dry Fan Motor. Are the resistance same between terminal points? V~U / U~W / W~V : 2~5Ω...

  • Page 35: No Power

    8. TROUBLESHOOTING WITHOUT ERROR CODES PE (Power Failure or no power) Is the Power Plug connected Reconnect Power Plug firmly. firmly to the power outlet? Check the fuse or And is the supply voltage reset the circuit breaker. 220~240V AC? Is Multi-plug socket used ? Don’t use Multi-plug...

  • Page 36: Vibration & Noise During Spin

    Vibration & Noise During Spin Have all the Transit Bolts and the Base Packing Remove the Transit Bolts been removed? Base Packing. Washer Base Packing Packing Support Refer to INSTALLATION. (Page 7)

  • Page 37: Detergent & Softener Does Not Flow In

    Detergent & Softener does not flow in Refer to [Water Inlet Error (IE)] Is water supplied? (page 23) Is detergent & softener put in the correct compartment of the drawer? Only softener Put it in the Correct Position. Main Wash Pre Wash (Powder) (Powder)

  • Page 38: Water Leak

    Water Leak 1. Water Leak from Dispenser Is the Dispenser Tray Damaged or warped? Replace the Dispenser Tray. Is detergent & softener put in Put it in the Correct Position. the correct compartment of the drawer? Only softener Reference (Amount of Detergent & Softener) Main Wash Pre Wash Detergent...
  • Page 39 2. Water Leak from Dispenser Are the gasket (seal) Clean the periphery of Gasket Door regularly. and door cleaned regularly? Is the door or gasket damaged? Replace the damaged parts. 3. Unknown – Water on Floor Are the inlet hoses loose or cracked/split? Replace the Inlet Hoses.

  • Page 40: Part Inspection

    9. Part inspection ARNING When Resistance (Ohm) checking the Component, be sure to turn the power off, and do voltage discharge sufficiently. -1. FILTER ASSEMBLY (LINE FILTER) iring Circuit in the MAIN P B / iring Diagram diagram Test points Result Test Points Result...

  • Page 41: 9-2.Door Lock Switch Assembly

    -2. DOOR LOCK SWITCH ASSEMBLY iring Circuit in the MAIN P B / iring Diagram diagram MAIN P B MICOM Relay Relay Common terminal of Valve Door switch Function The Door Lock Switch Assembly consists of a Heating PTC, a Bimetal, a Protection PTC, and a Solenoid.
  • Page 42 points Result est Points Result Remarks (2) to (4) 700-1500 At 77 ¡F ¡C (3) to (4) 60-90 At 77 ¡F ¡C (4) to (5) Infinity (2) to (4) 120 Vac Voltage Input...

  • Page 43: 9-3.Stator Assembly

    -3. STATOR ASSEMBLY iring Circuit in the MAIN P B / iring Diagram diagram MAIN P B NA1NA MICOM Function The DD motor can be driven from stopped to maximum speed in infinite steps in either direction. There are 36 poles on the stator; 12 permanent magnets spaced around the rotor. There are no brushes to wear out.
  • Page 44 he hall sensor determines the speed and direction of the motor. It also can read that the load is off balance when the drum speed fluctuates. est point - Voltage esting Hall Sensor at Stator Result (Hall Sensor) (2) (4) (1) (3) (5) If measuring voltage from the Main PCB Assembly to the Hall Sensor, use the following steps:...
  • Page 45 7. To measure output signal voltage from the hall sensor, carefully move test leads to terminals 1 to 4, blue and gray. Slowly rotate motor rotor by hand. You should read a pulsing 10 Vdc. If 10 Vdc is measured from 1 to 4, move lead on blue wire to red wire, terminal 2.

  • Page 46: 9-4.Pump Motor Assembly

    -4. PUMP MOTOR ASSEMBLY iring Circuit in the MAIN P B iring Diagram diagram MAIN P B Rg Cg 1 2 3 1 2 3 1 2 3 4 1 2 3 3 2 1 MICOM 3 2 1 CONNECTOR Pump Driving circuit DRAIN PUMP...

  • Page 47: 9-5.Inlet Valve Assembly

    -5. INLET VALVE ASSEMBLY iring Circuit in the MAIN P B diagram MICOM Inlet valve driving circuit CONNECTOR INLET iring Diagram VALVE MIAN P B COMMON GY VT BL (BK) 1 2 RD MAIN BLEACH VALVE INLET VALVE * All load circuits in wiring diagram are all the same. Function Depending on the cycle and water temperature, the controller will energize the hot or cold water valve solenoids to meet the selected water temperature.

  • Page 48: Disassembly Instructions

    10. DISASSEMBLY INSTRUCTIONS Disassemble and repair the parts after pulling out power cord from the outlet. CONTROL PANEL Screws 1 Unscrew the screws on the top plate. 2 The plate assembly(Top) is pulled back and then upward to arrow direction. 3 The cover(Inner) is disassembled.
  • Page 49 PWB ASSEMBLY(MAIN) 1 Disassembly lower cover assembly. 2 Two screws are unscrewed. 3 Pull the PWB assembly in direstion of red arrow. 4 Disassembly PWB like the picture. DISPENSER ASSEMBLY 3 Two screws are unscrewed. 4 Clamp 1 The plate assembly(Top) are disassembled. 2 Pull the drawer to arrow direction.
  • Page 50 INLET VALVE 1 Disconnect the wiring connector. 2 Remove the valve by two screws of the valve holder. When reconnecting the connector VALVE (STEAM) VIOLET/BLACK-BLACK VALVE (PRE-WASH) WHITE/BLACK-BLACK VALVE (NORMAL-WASH) GRAY/BLACK • Rating : 220/240V 50/60Hz • Resistant : 3.5~4.5kΩ DOOR 1 Open the door completely.
  • Page 51 CABINET COVER Two screws are unscrewed 1 The plate assembly(Top) is disassembled. 2 Pull out the drawer and unscrew 2 screws. 3 Lift the side the Control Panel Assembly and pull it out Pull the drawer to arrow direction. 1 Two screws are unscrewed. 2 Push out PANEL ASSEMBLY, CONTROL after Push the hook( ) below.
  • Page 52 4 Lift and separate the cabinet cover. NOTE: When assembling the CABINET COVER, connect the Door S/W connector. SWITCH ASSY, DOOR LOCK 1 Two screws are unscrewed and disassembly cabinet cover. 2 The Door Lock S/W is disconnected form the wiring connector and the strap.
  • Page 53 ROTOR ASSEMBLY, STATOR ASSEMBLY, FRICTION DAMPER 1 Remove the back cover. 2 After loosening the bolt, Rotor, pull out the rotor. 1 Remove the 6 bolts from the stator. 2 Disconnect the 2 connectors. Motor Stator Hall Sensor U V W Common •...
  • Page 54 PUMP 1 Disassembly Top Plate, Control Panel Assembly, Drawer Panel Assembly, Cabinet Cover Assembly, Lower Cover Assembly. 2 Unscrew the screws from the Side cover(Left). 3 Lift and separate the Side(Left) cabinet cover. 4 Remove pump outlet hose. Bellows Circulation 5 Remove tub pump bellows.
  • Page 55 WHEN FOREIGN OBJECT STUCK BETWEEN DRUM AND TUB 1 Remove washing heater. 2 Remove the foreign object(wire,coin,etc) by inserting long bar in the hole. SWITCH ASSEMBLY, SAFETY 1 Disassembly lower cover assembly. 2 Disassembly MAIN PWB ASSEMBLY 3 Disconnect the wiring connector. Fist, Press hook and turn the safety switch assembly switch assembly safety.

  • Page 56: Exploded View And Part List

    10. EXPLODED VIEW AND PART LIST 10-1. THE PART LIST OF CABINET ASSEMBLY A154 A140 A110 A103 A102 A153 A104 A152 A151 A150 A101 A141 A131 A100 A430 A130 A440 A134 A410 A135 A455 A300 A133 A310 A450 A303 A200 A485 A201 A220...
  • Page 57 10-2. THE EXPLODED VIEW OF CONTROL PANEL & DISPENSER ASSEMBLY F300 F324 F330 F321 F170 F340 F462 F160 F432 F225 F430 F220 F441 F120 F215 F110 F216 F210...
  • Page 58 10-3. THE EXPLODED VIEW OF DRUM & TUB ASSEMBLY K143 K350 K360 K123 K351 F140 K411 K121 K122 K410 K125 F310 F464 K146 F320 K320 F466 K111 M105 K110 K141 K140 K105 K115 K410 K130 K135 K610 K512 K510 K560 K611 K530 K131...
  • Page 59 10-4. THE EXPLODED VIEW OF DRYER M100 M240 M130 M120 M111 M216 M110 M210 M230 M215 M101 M220 M140...
  • Page 60 P/No. : MFL62645312...

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