LG LRE30451SW Service Manual page 52

Door lock system error
Code Error mode
F-2 Door Lock Fail
→ 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-2 error code appears.
Check for loose connection on the micro switch
and the door locking motor.
Check the oven door lock switch(micro switch)
(measure the resistance → Normally open type)
NO
COM
Continued on the next page
F-CODE FLOW CHART
F-2 error
Operation
In case of Door Lock Failure
Door lock failed
Disconnect power
Normal?
Yes
Door latch
open
Continuity
No
Door latch
Locked
Infinite
7-2
Times/sampling
Reconnect
END