LG LDG3015SB Service Manual page 62

CHECKING FLOW CHART BY FAILURE
Oven does not heat (including F-9, F-19 Error)
3
No
Normal?
Yes
Disconnect the oven sensor and check the value
(measure the resistance after cooling down)
Normal:approximately 1.06 kΩ at 65°F ~ 1.12 kΩ at 85°F.
No
Normal?
Yes
Replace the oven sensor
Replace the Relay PCB
(EBR71261602)
Replace the Oven SYSTEM PCB
(EBR72822702)
END
END
END
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