WM4070HVA, WM4070HWA - LG Washing Machine Service Manual (repair manual)

WASHING MACHINE

READ THIS MANUAL CAREFULLY TO DIAGNOSE
PROBLEMS CORRECTLY BEFORE SERVICING THE UNIT.

MFL67307926

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JULY 2012 PRINTED IN KOREA

1.

Specifications .................................................................................................................................. 3

2.

Features and Technical Explanation  ............................................................................................ 4-6

3.

Parts Identification ........................................................................................................................... 7

4.

Installation and Test  ................................................................................................................... 8-10

5.

Operation ................................................................................................................................. 11-17
5-1. Control Panel Features ..................................................................................................... 12-13
5-2. Cycle Guide  ........................................................................................................................... 14
5-3. Special Functions ................................................................................................................... 15
5-4. Explanation of Each Process ............................................................................................ 16-17

6.

Wiring Diagram / Program Chart .............................................................................................. 18-19

7.

Test Mode ...................................................................................................................................... 20
7-1. Safety Caution  ....................................................................................................................... 20
7-2. Load Test Mode  ..................................................................................................................... 20
7-3. How To Read the Display in Load Test Mode  ........................................................................ 20

8.

Troubleshooting ....................................................................................................................... 21-35
8-1. Safety Caution  ....................................................................................................................... 21
8-2. Error Mode Summary  ....................................................................................................... 21-22
8-3. Troubleshooting Summary  ..................................................................................................... 23
8-4. Troubleshooting With Error  ............................................................................................... 24-30
8-5. Troubleshooting Else  ........................................................................................................ 31-35

9.

Component Testing Information  ............................................................................................... 36-48
9-1. Filter Assembly (Line Filter)  ................................................................................................... 36
9-2. Door Look Switch Assembly  ............................................................................................. 37-38 
9-3. Stator Assembly ................................................................................................................ 39-41
9-4. Pump Motor Assembly ........................................................................................................... 42
9-5. Inlet Valve Assembly  .............................................................................................................. 43
9-6. Heater Assembly .................................................................................................................... 44
9-7. Thermistor Assembly  ........................................................................................................ 45-46
9-8. Steam Generator Assembly .............................................................................................. 47-48

10. Disassembly Instructions  ......................................................................................................... 49-59

11. Exploded View  ......................................................................................................................... 60-62

11-1. Cabinet and Control Panel Assembly ................................................................................... 60
11-2. Drum and Tub Assembly ...................................................................................................... 61
11-3. Dispenser Assembly ............................................................................................................. 62

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