LG F4J8GNP2W Service Manual
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LG F4J8GNP2W Service Manual

LG F4J8GNP2W Service Manual

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WASHING MACHINE
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE PROBLEMS
CORRECTLY BEFORE OFFERING SERVICE.
BEFORE SERVICING THE WASHING MACHINE, UNPLUG THE POWER
CORD TO AVOID THE RISK OF AN ELECTRIC SHOCK.
WH EN SERVICING INTERNAL PARTS, USE ONLY SERVICE PARTS
SUPPLIED FROM LG.
AFTER SERVICING THE ELECTRIC WIRE, INSURE THAT INSULATION
TAPE IS APPLIED TO PREVENT AN ELECTRICAL SHORT.
MODEL : F4J8GNP2W/F4J8FNP2W/F4J8FNP2S
WD1408NCW/WD1409NCW/WD1409NCE
website :
http:/ / biz.lgservice.com
e- mail : http:/ / LGEservice.com/ techsup.html

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Summary of Contents for LG F4J8GNP2W

  • Page 1 CORD TO AVOID THE RISK OF AN ELECTRIC SHOCK. WH EN SERVICING INTERNAL PARTS, USE ONLY SERVICE PARTS SUPPLIED FROM LG. AFTER SERVICING THE ELECTRIC WIRE, INSURE THAT INSULATION TAPE IS APPLIED TO PREVENT AN ELECTRICAL SHORT. MODEL : F4J8GNP2W/F4J8FNP2W/F4J8FNP2S WD1408NCW/WD1409NCW/WD1409NCE...

  • 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 ....................17 7. TROUBLESHOOTING ........................19 7-1.BEFORE PERFORMING SERVICE ..................19 7-2.LOAD TEST MODE ........................

  • Page 3: Specifications

    1. SPECIFICATION F4J8GNP2W / F4J8FNP2W / F4J8FNP2S ITEM WD1408NCW / WD1409NCW/ WD1409NCE POWER SUPPLY 220 V - 240 V ~, 50 /60Hz PRODUCT WEIGHT 67 kg WASHING 190 W ELECTRICITY SPIN 380 W CONSUMPTION DRAIN MOTOR 30 W WASH HEATER...

  • Page 4: Features & Technical Explanation

    2. FEATURES & TECHNICAL EXPLANATION 2-1. Product Features Inverter Direct Drive system The advanced 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. Combined with a controlled spin speed and the ability of the drum to rotate both left and right, the wash performance of the machine is greatly improved, giving you perfect results every time.
  • 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 Transit bolts (x 4) Power plug Drawer Control panel Drum Door Drain hose Drain tube Drain pump filter Cover cap (Location may vary depending on products) Adjustable feet (x 4) Accessories Cold supply hose (1EA) Spanner Caps for covering Anti–slip sheets (2 EA) (Option: Hot (1EA) transit bolt holes...

  • 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 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 Test operation Preparation Press the power button. Press the START/PAUSE button. washing. · Connect the power plug to the · In case of Coloreds program. outlet. · Connect the inlet hose. Check the water heating. Check automatic reverse turn. Check the water supply. ·...

  • Page 12: Operation

    5. OPERATION How to use washer Control Panel SmartDiagnosis function is available only for the products with a SmartDiagnosis mark. Power Button Programme Knob • Press the Power button to turn the • Programmes are available according to washing machine on, or off if washing the laundry type.
  • Page 13 How to use washer Programme Table_ Washing Programme Maximum Programme Description Fabric Type Proper Temp. Load Provides better performance by 40 °C Cotton combining various (Cold to 95 °C) Coloured fast garments drum motions. (shirts, nightdresses, pajamas, etc.) and Rating Provides optimised normally soiled cotton washing performance...
  • Page 14 How to use washer Option Programme Intensive ( Delay End ( ) If the laundry is normal and heavily soiled, Intensive option is effective. You can set a time delay so that the washing machine will start automatically and finish after Press the Power button.
  • Page 15 How to use washer Temp. Add Item ( The Temp. button selects the wash and rinse Laundry can be added or removed after the temperature combination for the selected washing programme is started. programme. Press this button until the desired setting is lit.
  • Page 16 How to use washer Child Lock Beep On / Off Use this option to disable the controls. This Press the Power button. feature can prevent children from changing cycles or operating the appliance Press the Start/Pause button. Locking the Control Panel Press and hold the Temp.

  • Page 17: Wiring Diagram / Pcb Layout

    6. WIRING DIAGRAM / PCB LAYOUT Wiring Diagram...
  • Page 18 PCB Layout (Main) Heater PCB POWER Motor Stator Control V ~ U / U ~ W / W ~ V → R : 8 ~ 11Ω Pressure Switch/ Wash Thermistor Pressure S/W Wash Therm Display Door Switch/ Drain Motor Control Door S/W Drain M Inlet Valve...

  • Page 19: Troubleshooting

    7. TROUBLESHOOTING 7-1. CHECK BEFORE SERVICE 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 20: 7-3.How To Check The Water Level Frequency

    7-3. HOW TO CHECK THE WATER LEVEL FREQUENCY Touch the Spin Rinse+ button simultaneously. Keeping touch, the digits indicate the water level frequency.

  • Page 21: 7-4.Error Display

    7-4. 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 all other errors, if the error is not resolved within 4 min., the power will turn off automatically and the error only will blink.
  • Page 22 ERROR SYMPTOM CAUSE The connector in the LEAD WIRE ASSEMBLY is MOTOR LOCKED not connected to the connector of STATOR ERROR ASSEMBLY. Page 36 POWER The washer experienced a power failure FAILURE Press the start/pause button WIFI MODULE The connector in the DISPLAY PCB ASSEMBLY ERROR is not connected to the connector of WIFI PCB ASSEMBLY.

  • Page 23: 7-5.Troubleshooting With Error

    7-5. TROUBLESHOOTING WITH ERROR Symptom Check Point 1. INLET VALVE 1.Check Electric Wiring. ERROR 2.Check Inlet valve’s Resistance. 3.Check Inlet valve clogged. 4. Voltage of the inlet valve’s connector. -. Valve running : 230Vac ± 5% Main Wash Hot valve Turbo Wash Per Wash...

  • Page 24: Ie (Water Inlet 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 25: 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 26: 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 27 Standpipe Height Is the 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 28: Fe (Overflow Error)

    FE (Overflow Error) Power off for 10sec. Then power on. Is the water level over reference line and is the water level frequency under 21.3kHz? * Water level frequency - Touch and Hold ‘Spin’ & ‘ Rinse+’ simultaneously. Drain out the water and then Is water continuously check the Air Chamber...

  • Page 29: 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 ? Pressure Switch Is the resistance of the Replace the Pressure Switch.
  • Page 30 Symptom Check Point 1. PRESSURE 1.Check Electric Wiring. SENSOR ERROR (PE) 2.Check Pressure sensor‘s Resistance. 3.Check Air chamber and Tube clogged. Pressure Sensor MAIN PWB Micom VT WH SB Resistance Pressure Main Sensor [Ω] 21 ~ 23 BL6 4 PRESSURE (1) ~ (3) BL6 5 (±...

  • Page 31: De2 (Door Open Error)

    Door Open Error (dE2/dE4) 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 32 Symptom Check Point 1. DOOR OPEN 1.Check Electric Wiring. ERROR (dE) 2.Check latch hook spring. (Cracked) 3.Check Door switch‘s Resistance. 4.Check Voltage of Door switch’s connector. Door switch Result Remarks (Type2) (2) ~ (4) 700~1500 Ω At 77 °F(25 °C ) At 77 °F(25 °C ) 90~120 Ω...

  • Page 33: 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 34 Symptom Check Point 1. HEATING Error (tE) 1.Check Electric Wiring. 2.Check Heater’s Resistance. 3.Check Thermistor ‘s Resistance. 4.Water leaked into the Thermistor’s connector. Wash Heater Steam Generator Heater Resistance Main Heater [Ω] Wash Heater BK 3 12 ~ 18 YL 3 (1) ~ (2) Steam Generator BL 3...
  • Page 35 Wash Thermistor Steam Generator Thermistor Resistance Remarks Main Resistance Remarks Main Thermistor Thermistor ℉ (℃) [kΩ] ℉ (℃) [kΩ] 39.5 86(30) 39.5 86(30) 26.1 104(40) 26.1 104(40) Wash 12.1 140(60) NA3 4 12.1 140(60) Thermistor NA3 5 158(70) 158(70) (1) ~ (2) Steam 203(95) 203(95)

  • Page 36: Le (Motor Lock Error)

    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 37 Symptom Check Point 1. NO POWER 1.Check Electric Wiri ng. 2.Check the Customer’s outlet. 3.Check Noise F ilter. 4.Check LED on in Main PWB Noise Filter Resistance Noise Filter [Ω] WH1 (1) ~ RD1 (3) WH1 (3) ~ RD1 (1)

  • Page 38: Troubleshooting Without Error Codes

    8. TROUBLESHOOTING WITHOUT ERROR CODES PF (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 39: Vibration & Noise During Spin

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

  • Page 40: Detergent & Softener Does Not Flow In

    Detergent & Softener does not flow in Refer to [ W ater 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)

  • Page 41: 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 42 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 43: Smart Function

    • To verify the Wi-Fi connection, check that Wi-Fi icon on the control panel is lit. Installing Smart ThinQ • LG Smart ThinQ is not responsible for any network connection problems or any faults, Search for the LG Smart ThinQ application from...
  • Page 44 To obtain the source code under GPL, LGPL, • Once the Remote Start mode is enabled, MPL, and other open source licenses, that is you can start a cycle from the LG Smart contained in this product, please visit http:// ThinQ smartphone application. If the cycle opensource.lge.com.

  • Page 45: Part Inspection

    9. Part inspection...

  • Page 48: 9-3.Stator Assembly

    8-11 8-11 8-11...

  • Page 50: 9-5.Inlet Valve Assembly

    Ω...

  • Page 51: Disassembly Instructions

    10. DISASSEMBLY INSTRUCTIONS Remove the power cord from the outlet before disassembling or repairing the unit. CONTROL PANEL ASSEMBLY Screws 1 Unfasten the screws from the parts displayed in the fig. 2 Disassemble the top plate assembly by sliding it back and then lifting it up. 3 Pull the drawer panel assembly out.
  • Page 52 PWB ASSEMBLY(MAIN) 1 Unscrew two screw of the PWB 2 First Disassembly atomizing hose from the PWB and Pull the PWB assembly in direction of red arrow 3 Disassembly PWB like the picture DISPENSER ASSEMBLY 1 The plate assembly(Top) are disassembled. 2 Pull the drawer to arrow direction.
  • Page 53 INLET VALVE 1 Disconnect the wiring connector. 2 Remove the valve by two screws of the valve holder. When reconnecting the connector VALVE ( PRE-WASH) WHITE/BLACK-BLACK or GRAY-BLACK VALVE (NORMAL-WASH) Y/BLACK ORANGE-BLACK VALVE (ATOMIZING) or BROWN-BLACK Rating : 220/240V 50/60Hz Resistant : 3.5~4.5 kΩ...
  • Page 54 CABINET COVER 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 1 Two screws are unscrewed. 2 Push out PANEL ASSEMBLY, CONTROL after Push the hook( ) below.
  • Page 55 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 56 ROTOR ASSEMBLY, STATOR ASSEMBLY, FRICTION DAMPER 1 Remove the back cover. , t l , ro t l l u rotor. 1 Remove the 6 bolts from the stator. 2 Disconnect the 2 connectors. Motor Stator U V W • V ~ U (8~11Ω) •...
  • Page 57 PUMP 1 Disassembly Top Plate, Control Panel, Drawer Panel Assembly, Cabinet Cover Assembly, Lower Cover Assembly 4 Remove pump outlet hose. Bellows Circulation 5 Remove tub pump bellows. Hose 6 Remove cap(Remaining Hose). Pump Hose 7 Disconnect the wiring. 8 Three screws are unscrewed from the cabinet. 9 Remove the pump to arrow direction.
  • Page 58 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.

  • Page 59: Exploded View And Part List

    EXPLODED VIEW A ND PART LIST THE PART LIST OF CABIN ET ASSEMBLY A154 A140 A110 A103 A106 A102 A152 A151 A150 A101 A141 A100 A430 A130 A440 A134 A410 A135 A133 A310 A450 A303 A200 A485 A201 A220 COLD A276...
  • Page 60 THE EXPLODED VIEW O F CONTROL PANEL & DISPENSER ASSEMBLY F300 F321 F120 F170 F328 F160 F462 F432 F430 F225 F220 F441 F110 F215 F210...
  • Page 61 T HE EXP LODED VIEW O F DRUM & TUB ASSEMBLY K350 K360 K143 K123 F140 K411 K410 F320 K320 K111 F310 F466 K110 K141 F464 K140 K105 K410 K115 K130 K135 K610 K510 K611 K530 K131 F468 K340 K571 K572 F467 K570...
  • Page 62 P/No.: MFL69040504...

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