LG LWD3010ST Service Manual page 50

CHECKING FLOW CHART BY FAIRURE
Door lock system error
Just after self-clean start,the door lock motor starts to rotate. During that time if the door lock switch does not
operate properly after rotating twice, then supervising circuit detects a Door Lock failure and the F-10, F-20
error code appears.
F-10, F-20 Error
Door lock failed(F-10/F-20)
Disconnect the power
Check the terminal looseness of micro switch
and door locking motor
No
Normal?
Yes
1
9-11
Fix the connection
Or micro swith
END