W891202TC, W891252TC, W891402TC - LG Washing Machine Service Manual (repair manual). Page 3

1. SPECIFICATIONS ............................................................................................................................. 3

2. FEATURES & TECHNICAL EXPLANATION ..................................................................................... 4

3. PARTS IDENTIFICATION  ................................................................................................................. 6

4. INSTALLATION .................................................................................................................................. 7

5. OPERATION  ................................................................................................................................... 12

5-1. F1*89QD(1~9)  .......................................................................................................................... 12
5-2. F1*92QD(1~9)  .......................................................................................................................... 14

6. WIRING DIAGRAM / PCB LAYOUT / PROGRAM CHART  ............................................................ 16
7. TROUBLESHOOTING......................................................................................................................18

7-1.BEFORE PREFORMING SERVICE ......................................................................................... 18
7-2.LOAD TEST MODE .................................................................................................................. 18
7-3.HOW TO KNOW THE WATER LEVEL FREQUENCY  ............................................................. 18
7-4.ERROR DISPLAY ..................................................................................................................... 19
7-5.TROUBLESHOOTING WITH ERROR  ..................................................................................... 20

• IE (Water Inlet Error)  .............................................................................................................. 20
• UE (Unbalanced Error) ........................................................................................................... 21
• OE (Water Outlet Error) .......................................................................................................... 22
• FE (Flow over Error) ............................................................................................................... 24
• PE (Pressure Sensor S/W Error) ............................................................................................ 25
• DE (Door open Error)  ............................................................................................................. 26
• tE (Thermistor (Heating) Error) ............................................................................................... 27
• LE (Motor Lock Error) ............................................................................................................. 28

8. TROUBLESHOOTING WITHOUT ERROR CODES  ...................................................................... 30

• PF (Power Failure or no power)  ............................................................................................. 30
• Vibation & Noise in spin  ......................................................................................................... 31
• Detergent & Softener does not flow in .................................................................................... 32
• Water Leak  ............................................................................................................................. 33

9. DISASSEMBLY INSTRUCTIONS  ................................................................................................... 35

10. EXPLODED VIEW ......................................................................................................................... 42