31412 - LG Washing Machine Service Manual (repair manual)

31412 service manual
Model
31412
Pages
55
Size
22.58 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
31412.pdf
Date

Read LG 31412 Service Manual online

WASHING MACHINE
SERVICE MANUAL
READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.
CAUTION
MODEL :  796.3141#31#
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 is 
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
To reduce the risk of fire, electric shock, or personal injury when using this appliance, follow basic precautions, 
including the following.
·
 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. Connerting Water Supply Hose  ..........................................................................................  6
2-3. Connert 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  .....................................................................................................  20
4. Service Information
4-1. Wiring Diagram  ................................................................................................................  21
4-2. Disassembly Instrucion  ....................................................................................................  22
4-3. Test Running Without Water  ............................................................................................  29
4-4. Troubleshooting By Common Washing Problems  ............................................................  30
4-5. Troubleshooting Summary ................................................................................................. 31
4-6. Troubleshooting with Error Code ....................................................................................... 32
4-7. Other Troubleshooting ....................................................................................................... 37
5. Component Testing Information ................................................................................................. 39
5-1. Filter Assembly (Line Filter) ............................................................................................... 39
5-2. Door Lock Switch Assembly ............................................................................................... 40
5-3. Stator Assembly ................................................................................................................. 42
5-4. Pump Motor Assembly ....................................................................................................... 45
5-5. Inlet Valve Assembly .......................................................................................................... 46
5-6. Heater Assembly ................................................................................................................ 47
5-7. Thermistor Assembly .......................................................................................................... 48
6. Exploded View  ......................................................................................................................... 50
7. Replacement Part List  ............................................................................................................. 54
1. SPECIFICATIONS
3
Model
3141#31#
Electrical
Inner Tub
Stainless
Inlet Water Pressure
14.5 ~ 116 PSI (100 ~ 800 kPa)
Rating of Fuse
120V/60Hz
Spin Speed
1100 ±50
Weight
137.3 lbs. (62.3 kg)
Cycles
Normal, Heavy Duty, Bulky/Bedding, Whites, Sanitize w/Oxi, Clean 
Washer, Casual, Towels, Deep Wash, Express Wash, Handwash/
Wool, Delicates
Time Delay
1-19Hr
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
Yes
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, and tilt should be less than 1˚
•  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 a gap is seen 
between the tub and drum, the 
washer is not level. 
Right
Wrong
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. 
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Download LG 31412 Service Manual (Repair Manual)

Here you can read online and download LG 31412 Service Manual in PDF. 31412 service manual will guide through the process and help you recover, restore, fix, disassemble and repair LG 31412 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.