WT4870CW - LG Washing Machine Service Manual (repair manual)

wt4870cw service manual
Model
WT4870CW
Pages
53
Size
24.02 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
wt4870cw.pdf
Date

Read LG WT4870CW Service Manual online

WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
CAUTION
MODEL : WT4870C*
SAFETY PRECAUTION!
IMPORTANT SAFETY NOTICE!
2
This service information is intended for individuals possessing adequate backgrounds of 
electrical, electronic, and mechanical experience. Any attempt to repair this appliance may result 
in personal injury or property damage. The manufacturer or seller can not be responsible for the 
interpretation of this information, nor can it assume any liability in connection with its use.
   WARNING:
 
To reduce the risk of fire, electric shock, or personal injury when using this 
appliance, follow basic precautions, including the following:
·
 Wear gloves when working. 
Failure to do this can result in serious injury.
·
 The appliance is heavy. Two or more people are 
required  when moving the appliance. 
There is a risk of serious back injury or other injuries.
·
 Certain internal parts are intentionally not 
grounded and may present a risk of electric 
shock only during servicing. Service personnel - 
Do not contact the following parts while the 
appliance is energized: Pump bracket, rotor, and 
heater.
·
 Disconnect this appliance from the power  
supply before servicing. Turning the controls to 
the off position does not disconnect this 
appliance from the power supply.
   Failure to do this can result in shock.
·
 Reconnect all grounded devices after servicing. 
Failure to do this can result in shock.
CONTENTS
1. Specifications  ........................................... 3
2. Installation Instructions
2-1. How to Adjust Level  ...........................4
2-2. Connecting Water Supply Hose  ........ 6
2-3. Connect the Drain Hose  .................... 7
3. Operating Instructions
3-1. Identification of Parts  ........................ 8
3-2. Before Starting to Wash  .................... 9
3-3. Function of Each BUTTON   ............ 16
3-4. Washing Programs   ......................... 18
3-5. Care and Maintenance  .................... 19
4. Service Information
4-1. Disassembly Instruction  .................. 21
4-2. Wiring Diagram  ............................... 27
4-3. Test Running Without Water  ........... 28
4-4.  Troubleshooting By Common  
Washing Problems  .......................... 29
4-5. Troubleshooting Summary ................30
4-6. Troubleshooting with Error Code ......31
4-7. Other Troubleshooting ......................36
5. Component Testing Information ................38
5-1. Filter Assembly (Line Filter) ..............38
5-2. Door Lock Switch Assembly ..............39
5-3. Stator Assembly ................................41
5-4. Pump Motor Assembly ......................44
5-5. Inlet Valve Assembly .........................45
5-6. Thermistor Assembly .........................46
6. Exploded View  ........................................ 48
7. Replacement Part List  ............................ 52
1. SPECIFICATIONS
3
Model
WT4870C*
Electrical
Inner Tub
Stainless
Inlet Water Pressure
14.5 ~ 116 PSI (100 ~ 800 kPa)
Rating of Fuse
120V/60Hz
Spin Speed
1100±50 rpm
Weight
145.5 lbs (66kg)
Cycles
Cotton/Normal, Perm Press, Heavy Duty, Bulky/Bedding, 
Bright WhitesTM, Tub Clean, Speed Wash, Delicates
Time Delay
1 – 19 Hr
Lid Interlock Switch
Magnet Sensor
Control Lock
Yes
Softener Dispenser
Yes
Detergent Dispenser
Yes
Bleach Inlet
Yes
Auto Power Off
Yes
Smart Rinse™with Jet 
Spray
Yes
Heater
No
4
2. INSTALLATION INSTRUCTIONS
2-1. HOW TO ADJUST LEVEL
4
Raise
Lower
CAUTION
Raise
Lower
CAUTION
Raise
Lower
CAUTION
Raise
Lower
CAUTION
•  The ventilating openings in the base area must not be obstructed by carpeting.
•  Install the washing machine on a level and firm surface. There should be no more than 1° of variation.
•  Wooden floors may need reinforcing to prevent the normal vibration which occurs  
with an unbalanced load.
•  Do not install the washer on an inclined floor. 
Improper installation of the washer may cause noise and malfunctioning.
1
Installation area
•  
Install the washer on a firm, flat
 surface.
•  
If the washer is installed on an 
unsuitable floor, it could make 
considerable noise and vibrate.
2
3
Checking level
•   
Open the lid, check if the washer is 
correctly leveled by looking down 
from the top. If the tub is not 
centered in the opening, then the 
washer is not level.
WRONG
RIGHT
No shims. It would be dangerous. If the 
floor is that far from being level, it is a floor 
problem and not a washer problem. 
Set Leveling feet
•  
Adjust the leveling feet, Turn clockwise 
to raise the washer or 
counterclockwise to lower it.
Checking slope
•  
If installation surface is tilted, the 
washer will vibrate. Do not install 
on a sloping floor. 
Page of 53
Display

Download LG WT4870CW Service Manual (Repair Manual)

Here you can read online and download LG WT4870CW Service Manual in PDF. WT4870CW service manual will guide through the process and help you recover, restore, fix, disassemble and repair LG WT4870CW Washing Machine. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.