LG LRE30451 Service page 66

F-CODE FLOW CHART
Oven too hot error F-9 error
Yes
Check for a welded broil relay.
(measure the resistance)
Welded Normal
Continuity Infinite
No
Normal?
Replace
Yes
the oven relay PCB(012A)
Replace
END
the main relay PCB(009A)
END
7-10