LG LRE30453SW Service Manual page 46

FAILURE MODE FLOW CHART
Oven does not heat
Check for loose oven sensor connector
Normal?
Check the oven sensor
(measure the resistance after cooling down)
Normal: approximately 1.09kΩ
Normal?
Yes
Replace the oven relay PCB (012B)
Normal?
Yes
Replace the main PCB(002E)
END
No
Yes
No
Replace the oven sensor
END
For further check of main PCB
Refer to the appendix A
6-6
Reconnect
END