29002 - LG Washing Machine Service Manual (repair manual). Page 39

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39
8) Water drains when it should not
When, what, and how to check
Result of Check
Possible Cause
How to repair
Drain Hose
1. Verify the drain hose is inserted in a
standpipe or drain that is 0.9 ~ 1.2 m  
(36 ~ 46 inches) above the floor. 
Discharge height
incorrect. 
Incorrect installation. 
Insert the drain hose in a
standpipe or drain that is 
0.9 ~ 1.2 m  (36 ~ 46 inches)
above the floor. 
9) Drain error (DE) is displayed even when water drains normally
When, what, and how to check
Result of Check
Possible Cause
How to repair
Pressure Switch
1. In TEST MODE, check the pressure
switch frequency with the tub empty.
Below 26.3 kHz
Between 26.3 and
27.1 kHz
Defective pressure
switch
Defective main board
Replace the pressure switch.
Replace the main board.
10) Machine spins even with lid open
When, what, and how to check
Result of Check
Possible Cause
How to repair
Lid Switch
1. Check resistance between both
terminals on the lid switch with the lid
open.
0~9 
Ω
∞Ω
Contacts of switch are
welded. 
Defective main board.
Change the lead wire
assembly.
Replace the main board.
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